Craftsman 247.77588O Owner's Manual
Owner's Manual CRAFTSMAN 8.5 Horse Power CHIPPER-SHREDDER Model No. 247.77588O CAUTION: Before using this product, read this manual and follow all Safety Rules and Operating Instructions. Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A. 770-1228A Printed in U.S.A. (3/98)
Content Page Content Page Warranty Information 2 Service & Adjustment 14 Safe Operation Practices 3 Off-Season Storage 16 Assembly 5 Trouble-Shooting 17 Operation 8 Repair Parts 18 Maintenance 11 One-Year Warranty on Craftsman Chipper-Shredder For one year from the date of purchase, when this Craftsman chipper-shredder is maintained, lubricated, and tuned up according to the operating and maintenance instructions in the owner's manual, Sears will repair, free of charge, any defect in material or workmanship. This warranty excludes blades, chipper blades, flails, air cleaners, spark plugs, catcher bags and tires which are expendable parts and become worn dudng normal use. If this chipper-shredder is used for commercial or rental purposes, this warranty applies for only 30 days from the date of purchase. WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER IN THE UNITED STATES. THIS WARRANTY APPLIES ONLY WHILE THIS PRODUCT IS IN USE IN THE UNITED STATES. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Sears, Roebuck and Co., D/817WA, Hoffman Estates, II 60179 These accessories were available when the chipper- shredder was purchased. They are also available at most Sears retail outlets, and service centers. Most Sears stores can order repair parts for you when you provide the model number of your Craftsman chipper-shredder. Spark Air Engine Gas Stabilizer Tow Hitch Kit Plug Filter Oil Can PRODUCT SPECIFICATION HORSEPOWER: CRANKCASE CAPACITY: FUEL TANK CAPACITY: SPARK PLUG: GAP TIRE PRESSURE 8,5 H.R 26oz. SAE 30 ENGINE OIL 4 Quart (UNLEADED) Champion (N4C) .030 24 PSI Model Number ............ 247.775880 .......................... Serial Number ........................................................... Date of Purchase ...................................................... Record both serial number and date of purchase and keep in a safe place for future reference. 2
This symbol points out important safety instructions which, if not followed, could endanger the per- sonal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate your chipper shredder. Failure to comply with these instructions may result in per- sonal injury. When you see this symbol-heed its warning. ] Your chipper-shredder was built to be operated according to the rules for safe operation in / RAN P_I=R- this manual. As with any type of power equipment, carelessness or error on the pert of the oper- / .......... ator can result in serious injury. If you violate any of these rules, you may cause serious / injury to yourself or others. / J ,_ WARNING: The Engine Exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. GENERAL OPERATION Read this owner's guide carefully in its entirety before attempting to assemble this machine. Read, understand, and follow all instructions on the machine and in the manual(s) before operation. Be completely familiar with the controls and the proper use of the machine before operating it. Keep this manual in a safe place for future and regular reference and for ordering replacement parts. Your chipper-shredder is a powerful tool, not a plaything. Therefore, exercise extreme caution at all times. Your unit has been designed to perform two jobs; to chip and shred vegetation found in a normal yard. Do not use it for any other purpose. Never allow children under age 16 to operate the unit. Children 16 years and older should only operate the unit under close parental supervision. Only responsible individuals who are familiar with these rules of safe operation should be allowed to use your unit, Keep the area of operation clear of all persons, particularly small children and pets. Stop the engine when they are in the vicinity of the unit. Keep work area clean and clear of branches or obstacles which could cause you to stumble or fall. When feeding material into this equipment, be extremely careful that pieces of metal, rocks, bottles, cans or other foreign objects are not included. Personal injury or damage to the machine could result. Always wear safety glasses or safety goggles, during operation and while performing an adjustment or repair, to protect eyes from foreign objects that may be thrown from the machine. Wear sturdy, reugh-soled work shoes and close fitting slacks and shirt. Shirt and slacks that cover the arms and legs and steel-tood shoes are recommended. Do not wear loose fitting clothes or jewelry and secure hair so it is above shoulder length. They can be caught in moving parts. Never operate a unit in bare feet, sandals or sneakers. Wear glovss when feeding matedal in the chipper chute or shredder hopper. Never place your hands, feet, or any part of your body into the shredder hopper, chipper chute, discharge opening, or near any moving part while the engine is running. Keep clear of the discharge opening at all times. If it becomes necassary to push matedal into the chipper chute or shredder hopper, use a small diameter stick, NOT YOUR HANDS. If it is necessary for any reason to unclog the feed intake or discharge openings or to inspect or repair any part of the machine where a moving part can come in contact with your body or clothing, stop the machine, allow it to cool, disconnect the spark plug wire from the spark plug and move it away from the spark plug before attempting to unclog, inspect or repair. Do not operate unit while under the influence of alcohol or drugs. The machine should only be operated on a level surface. Never operate your unit on a slippery, wet, muddy or icy surface. Keep your work area clean and clear of branches or obstacles which could cause you to stumble and fall. Do not overreach. Maintaining proper footing and balance is essential to preventing accidents. Do not allow an accumulation of processed material to build up in the discharge area as this will prevent proper discharge and can result in kick-back from the chipper chute. Keep your face and body back from chipper chute to avoid accidental bounce back of any material. Do not transport machine while engine is running. If the cutting mechanism stdkes a foreign object or if your machine should start making an unusual noise or vibration, immediately stop the engine and allow the machine to come to a complete stop. Disconnect the spark plug wire and move it away from the spark plug. Take the following steps. a. Inspect for damage. b. Repair or replace any damaged parts. o. Check for any loose parts and tighten to assure continued safe operation. Never attempt to attach or remove catcher bag when engine is running. Shut the engine off and wait for the
impeller to come to a complete stop. The impeller continues to rotate for a few seconds after the engine is shut off. Never place any part of the body in the impeller area until you are sure the impeller has stopped rotating. Muffler and engine become hot and can cause a bum. Do not touch. Do not allow leaves or other debris to build-up on engine's muffler. The debris could ignite and cause a fire. Do not attempt to shred or chip material larger than specified in this manual. Personal injury or damage to the machine could result. Do not operate engine if air cleaner or cover over carburetor air-intake is removed, except for adjustment. Removal of such parts could create a fire hazard. Only use accessories approved for this machine by the manufacturer. Read, understand, and follow all instructions provided with the approved accessory. If situations occur which are not covered by this manual, use care and good judgment. Contact your dealer for assistance. Keep discharge chute deflector, chipper chute door, and all other guards and safety devices in place and operating propady. Only operate unit in good daylight. Do not operate unit at night or in dark areas where your vision may be impaired, CHILDREN Tragic accidents can occur if the operator is not alert to the presence of small children. Children are often attracted to the chippar-shredder and the chipping and shredding activity. Never assume that children will remain where you last saw them. Keep children out of the work area and under the watchful eye of a responsible adult other than the operator. Be alert and turn the unit off ifa child enters the area. Never allow children under the age of 16 to operate the chipper-shredder, SERVICE Use extreme care in handling gasoline and other fuels. They are extremely flammable and the vapors are explosive. a. Store fuel and oil in approved containers, away from heat and open flame, and out of the reach of children. Check and add fuel before starting the engine. Never remove gas cap or add fuel while the engine is running. Allow engine to cool at least two minutes before refueling. b. Replaco gasoline cap securely and wipe off any spilled gasoline before starting the engine as it may cause a fire or explosion. c. Extinguish all cigarettes, cigars, pipes and other sources of ignition. d. Never refuel unit indoors because flammable vapors will accumulate in the area. e. Never store the machine or fuel container inside where there is an open flame or spark such as a gas hot water heater, space heater, clothes dryer or furnace. Never run your machine in an enclosed area as the exhaust from the engine contains carbon monoxide, which is an odorless, tasteless and deadly poisonous gas. To reduce fire hazard, keep engine and muffler free of leaves, grass, and other debris build-up. Clean up fuel and oil spillage. Allow unit to cool at least 5 minutes before storing. Before cleaning, repairing, or inspecting, make certain the impeller and all moving parts have stopped. Disconnect the spark plug wire and keep wire away from spark plug to prevent accidental starting. Do not use flammable solutions to clean air filter. Check the blade and engine mounting screws at frequent intervals for proper tightness. Also visually inspect blades for wear and/or damage (e.g., bent, cracked). Replace with blades which meet original equipment specifications. Keep all nuts, bolts, and screws fight to be sure the equipment is in safe working condition. Never tampar with safety devices. Check their proper operation regularly. After striking a foreign object, immediately stop the engine, disconnect the spark plug wire from the spark plug, and thoroughly inspect the unit for any damage. Repair damage before starting and operating unit. Do not alter or tamper with the engine's governor setting. The governor controls the maximum safe operating speed of the engine. Over-speeding the engine is dangerous and will cause damage to the engine and to other moving parts of the machine. YOUR RESPONSIBILITY Restrict the use of this power machine to persons who read, understand and follow the warnings and instructions in this manual and on the machine. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE This unit is equipped with an internal combustion egine and should not be used on or near any unimproved forest- covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest Sears Authorized Service Center (See the REPAIR PARTS section of this manual.)
Hopper* Chipper Chute Discharge Chute Bottle of Oil Safety Glasses Catcher Bag * The hopper is packed in the top insert in your chipper-shredder carton. Figure 1 IMPORTANT: This unit is shipped without gasoline or oil in the engine, Al_er assembly, see OPERATION section of this manual for proper fuel and engine oil fill-up. NOTE: To determine right and left hand sides of your chipper-shredder, stand behind the unit with the engine farthest away from you. Your chipper-shredder has been completely assembled at the factory, except for the hopper assembly, chipper chute, discharge chute and the catcher bag. These parts are shipped loose in the carton. A pair of safety glasses and a bottle ofoil are also included in the canon. UNPACKING FROM CARTON Cut the corners of the canon. Remove all packing inserts. Remove all loose parts including owner's manual. See figure 1. Roll chipper-shredder out of the canon. Make certain all parts and literature have been removed before the carton is discarded. LOOSE PARTS (Refer to figure 1 .) a, Hopper Assembly b. Discharge Chute c. Chipper Chute d. Catcher Bag e. Bottle of Oil f. Safety Glasses g. Owner's Manual (not shown in figure 1) TOOLS REQUIRED 1. 1/2" or Adjustable Wrenches 2. 7/16" or Adjustable Wrenches 3. 9/16" or Adjustable Wrenches 4. Funnel DISCONNECTING SPARK PLUG Disconnect the spark plug wire and move it away from the spark plug before assembling the chipper-shredder. See figure 2. Spark Plug Wire Figure 2 ATTACHING DISCHARGE CHUTE Remove the wing knobs from each side of the discharge opening on the chipper-shredder. See figure 3. Using two 7/16" wrenches, remove hex lock nut, two spacers, and the bex bolt from top of the housing assembly. For easy assembly, do not remove the second spacer from the hex bolt. Place the discharge chute in position on the discharge opening. Insert hex bolt and spacer
through hinge on discharge chute and housing (spacer fits inside of hinge). See figure 3 inset. Spac_er _-J-_ Hex Nut --Hex Bolt Hinge \ Hopper Pivot Door Inlet Guide Opening He_ Hopper Nut Wing Dischargl Figure 3 Place second spacer over hex bolt inside the other part of the hinge. Secure with hex lock nut. Tighten securely. Secure both sides of discharge chute to housing using wing knobs that you earlier removed. Tighten wing knobs. ATTACHING HOPPER ASSEMBLY Remove the 8-3/8" long hex bolt and the hex nut from the bottom of the inlet guide opening. See figure 4 inset. Place the hopper assembly on the ground and hold it in the position shown in step 1 in figure 4. Holding the hopper, push hopper pivot door down inside the hopper. See figure 4. Slide the hopper assembly towards the chipper- shredder housing so that the upper guide on the hopper assembly slides under the stop washer on each side of the inlet guide, See figure 4. Align the two holes (one on each side) of the lower hopper with the two holes (one on each side) of the inlet guide. See figure 4 inset. insert the hex bolt (that you earlier removed) from the left through the hole on the hopper and the inlet guide. Insert the hex nut onto the bolt from the other side. See figure 4 inset. Tighten the bolt till the lock nut is engaged. Make sure to remove sideplay from the bolt, but the hopper should be able to pivot. Inlet 1. Guide Hopper Figure 4 To raise the hopper, hold the hopper by the hand-hold and lift it up till it clicks into position. To Iowerthe hopper, hold the hopper by the hand-hold and pull the release bar. The hopper should drop down. See figure 5. Release Bar Figure 5 The flap control rod is already attached to the hopper at the top. The other end of the rod has to be attached to the stop washer on the inlet guide. See figure 6. Raise the hopper till it clicks into position. Unscrew the shoulder bolt from the stop washer on the inlet guide. See figure 6. Align the loose end of the flap control rod with the stop washer on the inlet guide. Slide the shoulder bolt through the opening in the flap control rod. Secure tightly. See figure 6.
& WARNING; This flap control rod is a safety device to hold the flap in place inside the hopper while shredding branches. Do not operate the chipper-shredder without properly attaching this flap control rod to the unit. Stop Hex Washer* Nut* // =ett I / io_ Chipper Chute \ \ Insert one each of the hex bolts, lock nuts, and flat washers (that you earlier removed) through each hole in the chute and the brace. Tighten these bolts to secure brace to the chute. Tighten bolts securing the brace to the lower frame. These bolts had been removed eadier. Tighten the three nuts on the weld studs. Cupped Washer Weld Stud Weld Stud Attach flap control rod here Flap Control Rod * Do not remove these hardware from the inlet guide assembly while attaching the flap control rod. Figure 6 ATTACHING THE CHIPPER CHUTE Your unit is shipped with one end of the brace already secured to the lower frame. Loosen the bolts securing the brace to the frame. Remove the three cupped washers and hex nuts from the weld studs beside the opening on the left side of the housing. See figure 7. Remove the two sets of hex bolt, lock nut, and fiat washer from the two holes on the upper end of the brace as shown in figure 7. Place the chipper chute over the weld studs so the slot on the chute is towards the bottom. Align the three holes at the bottom of the chute with the three weld studs. Secure with the three pairs of cupped washers and hex nuts that you earlier removed. Do not tighten the nuts at this time. Make sure to place the cupped side of the washer against the chipper chute. Align the holes towards the front opening of the chute with the holes on the brace. See figure 7. Washer Chu_ Bmce Figure 7 ATTACHING THE CATCHER BAG Your chipper-shredder is equipped with a catcher bag to catch the shredded material. To attach the bag, place the opening of the bag over the chute deflector and the chute flange. Make sure it completely covers the chute deflector. Depress the plunger on the drawstring, and pull on the drawstring until the bag is tight around the chute opening. Release plunger to lock it into position. See figure 8. Catcher Bag Plunger Figure8
Read this owner's manual and safety rules before operating your chipper-shredder. Compare the illustration in figure 9 with your chipper-shredder to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference. _ he operation of any chipper-shredder can result in foraign objects being thrown into the eyes, which can result in severe eye damage. Always wear safety glasses provided with the chipper-shredder before chipping or shredding, or while performing any adjustments or repairs. Release Bar Rear Wheel Lock Lever Figure 9 OPERATING CONTROLS (Refer to Figure 9,) Release Bar Used to release the hopper when raising or lowering. Choke Lever Used to enrich the fuel mixture in the carburetor when starting a cold engine. Starter Handle Used to manually start the engine. Hopper Assembly Allows leaves and small branches upto 1" diameter to be fed into the impeller for chipping and shredding, Lower the hopper to collect raked material for shredding. Throttle Control Regulates speed of the engine. Chipper Chute Allows bulky vegetation like stalks or heavy branches upto 3" diameter to be fed into the impeller for chipping and shredding. Catcher Bag (not shown) Used to collect the shredded material. Rear Wheel Lock Lever Used to lock the rear wheels from moving. Stopping Engine Move throttle control lever to STOP position. Disconnect spark plug wire and move away from spark plug to prevent accidental starting. MEETS ANSI SAFETY STANDARDS Sears chipper-shredders conform to the safety standard B 71.6 -1990 of the American National Standards Institute. 8
WARNING: Before using yourchipper- shredder, again refer to the safety rules on pages 3 and 4 of this manual. Always be careful. GAS AND OIL FILL-UP Oil (Packed with unit) Only use high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's viscosity grade according to your expected operating temperature. Follow the chart below. 32°F Warmer Colder _ I 5W30 I SAE 30 NOTE: Although multi-viscosity oils (5W30, 10W30, etc.) improve starting in cold weather, these multiviscosity oils will result in increased oil consumption when used above 32°F. Check the oil level more frequently to avoid possible engine damage from running low on oil. Fill engine with oil as follows. Remove oil fill dipstick. See figure 10. Remove cap and fill gas Remove dipstick \ Figure 10 With chipper-shredder on level ground, use a funnel to fill engine with oil to FULL mark on dipstick. Capacity is approximately 26 ounces. Be careful not to overfill. Check oil level. Add oil if necessary. Replace dipstick and tighten. NOTE: Do not overfill. Oil bottle packed with unit contains 26 oz. of oil. Gasoline WARNING: Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage for 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel next season. See STORAGE instructions for additional information. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. Fill gas tank with gas as follows. Remove fuel cap. See figure 10. Make sure the container (from which you will pour the gasoline) is clean and free from rust or foreign particles. Never use gasoline that may be stale from long periods of storage in the container. Fill fuel tank with clean, fresh, lead-free automotive gasoline. DO NOT use Ethyl or high octane gasoline. See figure 10. Replace fuel cap. WARNING: Do not fill closer than 1/2 inch of top of fuel tank to prevent spills and to allow for fuel expansion. If gasoline is accidently spilled, move chipper-shredder away from area of spill. Avoid creating any source of ignition until gasoline vapors have disappeared. Check the fuel level periodically to avoid running out of gasoline while operating the chipper- shredder. If the unit runs out of gas as it is shredding or chipping, it may be necessary to unclog the unit before it can be restarted. Refer to "Removing the Flail Screen" instructions in SERVICE AND ADJUSTMENT section. STARTING ENGINE & WARNING: Be sure no one other than the operator is standing near the chipper- shredder while starting or operating the unit. Do not operate this chipper-shredder unless the chute deflector has been properly installed and secured with hand knobs.
NOTE: TO prevent the unit from sliding, place your foot firmly against the tire. 1. Attach spark plug wire -- \ 3. Move choke to "on" position 2. Place throttle in Fast Position 4. Pull rope Figure 1t Attach spark plug wire and rubber boot to spark plug. See figure 11. Place throttle in FAST position. See figure 11. Move choke lever to CHOKE position (in the direction of the arrow) as shown. If restarting a warm engine after a short shutdown, move choke lever to =No Choke" position. Grasp starter handle and pull rope out slowly until engine reaches start of compression cycle (rope will pull slightly harder at this point). Let the rope rewind slowly. Pull rope with a rapid full arm stroke. Let rope return to starter slowly. See figure 11. When engine starts, move choke lever to half choke position until engine runs smoothly and then to No Choke position. If engine fails to start after three pulls, move choke lever to No Choke position and pull starter rope again. If engine rims, but does not continue to run, move choke lever to Full Choke position and pull rope again. Move choke lever to OFF position as engine warms up. NOTE: A noise will be heard when finding the start of the compression cycle. This noise is caused by the flails and fingers which are part of the shredding mechanism falling into place, and should be expected./n addition, the flails and fingers will be noisy after the engine is started, until the impeller reaches furl speed. STOPPING ENGINE Move starter switch to OFF position. Disconnect spark plug wire and move away from spark plug to prevent accidental starting. USING YOUR CHIPPER-SHREDDER A WARNING: Do not attempt to shred or chip any matedal other than vegetation found in a normal yard (i.e., branches, leaves, twigs, etc.). The chipper-shredder is designed for two different methods of operation. a. Leaves and small branches up to 1/2" diameter (maximum) can be fed into the hopper assembly when it is in the raised or lowered position. See figure 12. b. Bulky material, such as stalks or heavy branches, up to 3" in diameter should be fed into the chipper chute. See figure 12. A WARNING: Do not put material larger than is specified into the hopper, and/or into the chipper chute. Personal injury or damage to the machine could result. If it becomes necessary to push material into the chipper-shmdder, use a small diameter stick - NOT YOUR HANDS. The stick should be small enough that it will be ground up if it gets into the impeller assembly. LOWER THE HOPPER ASSEMBLY To lower the hopper assembly, use one hand to grasp the hand-hold at the top of the hopper assembly and lift slightly. See figure 5. Pull up on the release bar, and lower the hopper assembly to the ground. Release the bar. See figure 5. A WARNING: Never remove chute deflector till the unit has completely stopped. Never shut offthe engine until all chipping is completed. For best performance, it is important to keep the shredding blade and the chipper blades sharp. If the composition of the material being discharged 10
changes (becomes stdngy, etc.) or if the rate at which the material is discharged slows down considerably, it is likely that the shredding blade and/or chipper blades are dull and need to be sharpened or replaced. Refer to Service and Adjustments section. IMPORTANT: There is a flail screen located inside the housing in the discharge area. If the flail screen becomes clogged, remove and clean as instructed in the Service and Adjustments section. A WARNING: The chipper-shredder discharges materials with considerable velocity. Keep away from the area around the discharge chute. Always stop the engine and disconnect spark plug wire when removing or attaching the bag, changing containers, or removing the shredded matarial. Wear safety glasses and gloves whenever using your chipper-shredder. Shred material upto 1/2 inch in diameter / Chip material upto 3 inches in diameter Catch shredded material in catcher bag Lower the hopper to collect raked material for shredding Figure 12 GENERAL RECOMMENDATIONS Always observe safety rules when performing any maintenance. The warranty on this chipper shredder does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain the chipper- shredder as instructed in this manual. Some adjustments will need to be made periodically to maintain your unit properly. All adjustments in the Service and Adjustments section of this manual should be checked at least once each season. Follow the maintenance schedule given below. Periodically check all fasteners and make sure these are tight. A WARNING: Always stop the engine and disconnect the spark plug wire before performing any maintenance or adjustments. Never remove discharge chute till the engine has completely stopped. CLEANING Clean the chipper-shredder by running water from a hose through the hopper assembly and chipper chute with the engine running. Allow the chipper-shredder to dry thoroughly. Wash the bag pedodically with water. Allow to dry thoroughly in the shade. Do not use heat. ENGINE MAINTENANCE Engine Oil Only use high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's viscosity grade according to your expected 11
CUSTOMER RESPONSIBILITIES o MAINTENANCE _ _ ..,P e,_P _3 =_ sc. oo, o,O { o ,v.C o,TEs Oil pivot points 0 Clean shredder _ a. Check engine oil ,,, Change engine oil <_ Service air cleaner ILl Clean engine _ Reset spark plug _ Clean muffler operating temperature. Refer to page 9 of this To Service Air Cleaner: manual for viscosity chart. 1. The four-cycle engine of your chipper-shredder will normally consume some oil. Therefore, 2. check engine oil level regularly approximately avery five hours of operation and before each 3. usage. Stop engine and wait several minutes before checking oil level. With engine on level ground, the oil must be to FULL mark on dipstick. Change engine oil after the first five hours of operation, and every twenty-five hours thereafter. To Drain Oil Drain oil while engine is warm. Follow the instructions given below. Remove oil drain plug. Catch oil in a suitable container. When engine is drained of all oil, replace drain plug securely. Refill with fresh oil. Refer to GAS AND OIL FILL-UP section. Replace dipstick. Air Cleaner The air cleaner prevents damaging dirt, dust, etc., from entering the carburetor and being forced into the engine and is important to engine life and performance. The air cleaner consists of a pre- cleaner or foam filter, and a paper filter. Never run the engine without air cleaner completely assembled. Service pre-cleaner after every 25 hours of use, or at least once a season. Service filter every 100 hours of use, or at least once a season. Service pre-cleaner and filter more often under dusty conditions. Remove wing nut and cover. Slide pre-cleaner off filter. Clean the inside of base and cover thoroughly. Clean pre-cleanar as follows: (See figure 13.) a. Wash in water and detergent solution, and squeeze(donottwist) untilalldirtisramoved. b. Rinse thoroughly in clear water. c. Wrap in a clean cloth and squeeze (do not twist) until completely dry, or allow to air dry. d. Saturate with engine oil and squeeze (don't twist) to distribute oil and remove excess oil. L Base Foam Filter -- Wing Nut-- Paper Filter Figure 13 NOTE: If the pre-cleaner is torn or damaged in any way, replace it. 12
If necessary, replace paper filter (do not attempt to clean). Install new filter on base. Slide pre-cleaner over filter. Install cover and wing nut. Tighten wing nut securely. Clean Engine Clean engine periodically. Remove dirt and debris with a cloth or brush. Frequently remove grass clippings, dirt and debris from cooling fins, air intake screen and levers and linkage. See figure 14. This will help ensure adequate cooling and correct engine speed. Clean cooling Figure 14 Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in figure 14 to avoid overspeeding, overheating and engine damage. Clean more often if necessary. NOTE: Cleaning with a forceful spray of water is not recommended as water could contaminate the fuel system. WARNING: Temperature of muffler and nearby areas may exceed 150 ° F(65°C). Avoid these areas, Spark Plug Clean the spark plug and reset the gap to .030" at least once a season or every 50 hours of operation. See figure 15. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type. ' Feeler ( Plug Figure 15 NOTE: Do not sandblast spark plug. Spark plug should be cleaned by scraping or wire brushing and washing with a commercial solvent. Muffler A WARNING: Do not operate the chipper- shredder without a muffler, or tamper with the exhaust system. Damaged mufflers or spark arresters could create a fire hazard. Inspect periodically, and replace if necessary. If your engine is equipped with a spark arrester screen assembly, remove every 50 hours for cleaning and inspection. Replace if damaged. & WARNING: Always stop engine, disconnect spark plug wire, and move it away from spark plug before performing any adjustments or repairs. LUBRICATION Lubricate the pivot points on the release bar, hopper assembly, chute deflector and chipper chute once a season using a light oil. See figure 16 Figure 16: Lubrication Chart 13
14
REMOVING THE FLAIL SCREEN If the discharge area becomes clogged, remove the flail screen and clean area as follows. Stop engine, make certain the chipper- shredder has come to a complete stop and disconnect spark plug wire from the spark plug before unclogging the chute. Remove the two hand knobs on each side of the discharge chute (also called the chute deflector). Lift the discharge chute up, and keep it out of the way. Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins, See figure 17. Pull the flail screen from inside the housing. See figure 17. Clean the screen by scraping or washing with water. Reinstall the screen. Put the discharge chute back to its original position and tighten the hand knobs. NOTE: Be certain to reassemble the flail screen with the curved side down. Chute Deflector Chipper Chute Remove the flail screen as instructed in previous section. Using a 1/2" wrench, remove the chipper chute by removing three hex nuts and washers. See figure 17, Using a 7/16" wrench, remove the brace (holding the chute to the frame) by removing the hex bolts. NOTE: When re-assembling, the cupped washer goes on the slot toward the bottom of the chipper chute with the cupped side against the chute. Rotate the impeller assembly by hand until you locate one of the two chipper blades in the chipper chute opening. Remove the blade, using a 3/16" allen wrench on the outside of the blade and 1/2" wrench on the impeller assembly (inside the housing). See figure 18. Slot Blade Hex Nut, Washer Hand Knobs Figure 17 SHARPENING OR REPLACING THE BLADES Chipper Blades Disconnect spark plug wire and move it away from spark plug. Figure 18 Remove the other blade in the same manner. Replace or sharpen blades. If sharpening, make certain to remove an equal amount from each blade. Reassemble in reverse order. Make certain blades are reassembled with the sharp edge facing the direction shown in figure 18 (sharp edge is assembled toward the slotted opening at the bottom). Torque bolts and nuts to 250-350 inch-pounds. Shredding Blade The shredding blade may be removed for sharpening or replacement as follows. 15
Disconnect spark plug wire and move it away from spark plug. Lower the hopper assembly. Block up the housing. See figure 19. Weld Bolt Allen Screw Pipe cause damage to the unit. The blade can be tasted for balance by balancing it on a round shaft screwddver or nail. Remove metal from the heavy side until it is balanced evenly. See figure 20. When reassembling the blade, tighten center bolt to between 550 and 650 inch-pounds and the two outer bolts to between 250and 350 inch- pounds, or lacking torque wrench, tighten securely. 1. insert screw driver through hole d/ 2. Blade should be parallel to ground Screv_ Driver\ Blade i I -- Ground Torque Wrench Figure 20 Figure 19 Remove the six hex lock nuts and lock washers from the housing weld bolts using a 1/2" wrench. Separate the chipper-shredder into two halves. Remove the back-up plate. NOTE: When reassembling, make certain the embossed tab faces inward towards the impeller, and opening on the back-up plate is toward the bottom of the unit. Remove the two hand knobs and cupped washers which secure the chute deflector. Raise the chute deflector. Insert a 1/2" or 3/4" diameter pipe through the flail screen into the impeller to keep it from turning, or remove the flail screen and insert a piece of wood (2 x 4) into the chute opening. Remove the two outside screws on the blade, using a 3/16" allen wrench and a 1/2" wrench. Remove the blade by removing the center bolt, lock washer and fiat washer. ,_ WARNING: Use caution when removing the blade to avoid contacting the weld bolts on the housing. When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equat amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds and may ADJUSTING CARBURETOR A WARNING: If any adjustments are made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of heated surfaces and muffler. The carburetor has been pre-set at the factory and should not require adjustment. However, if your engine does not operate properly due to suspected carburetor problems, take your chipper-shredder to your nearest SEARS service center. ENGINE SPEED The engine speed on your chipper-shredder has been set at the factory. Do not attempt to increase engine speed or it may result in personal injury. If you believe the engine is running too fast or too slow, take your chipper-shredder to the nearest SEARS service center for repair and adjustment. TIRES Recommended operating tire pressure is 24 p.s.i. (sidewall of tire may give tire manufacturers recommended pressure). Equal tire pressure should be maintained on both tires. WARN I N G: Excessive pressure when seating beads may cause tire/rim assembly to burst with force sufficient to cause serious injury. 16
Prepare your chipper-shredder for storage at the end of the season or if the unit will not be used for 30 days or more. A WARNING: Never store machine with fuel in the fuel tank inside of building where fumes may reach an open flame or spark, or where ignition sources are present such as hot water end space heaters, furnaces, clothes dryers, stoves, electric motors, etc. A yearly check-up by your local Sears service center is a good way to make certain your chipper-shredder will provide maximum performance for the next season. CHIPPER-SHREDDER Clean the chipper-shredder thoroughly. Wipe unit with an oiled rag to prevent rust (use a light oil or silicone). ENGINE IMPORTANT; It is important to prevent gum deposits from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose, or tank during storage. Also, experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. Drain the fuel tank. Start the engine and let it run until the fuel lines and carburetor are empty. Drain carburetor by pressing upward on bowl drain which is located below the carburetor. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. Use fresh fuel next season. NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container. Always follow the mix ratio found on stabilizer container. Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the carburetor. Do not drain the gas tank and carburetor if using fuel stabilizer. Drain all the oil from the crankcase (this should be done after the engine has been operated and is still warm) and refill the crankcase with fresh oil. If you have drained the fuel tank, protect the inside of the engine as follows. Remove spark plug, pour approximately 1/2 ounce (approximately one tablespoon) of engine oil into cylinder and crank slowly to distribute oil. Replace spark plug. OTHER Do not store gasoline from one season to another. Replace your gasoline can if your can starts to rust. Rust and/or dirt in your gasoline will cause problems. Store unit in a clean, dry area. Do not store next to corrosive materials, such as fertilizer. NOTE; ff storing in an unventilated or metal storage shed, be certain to rustproof the equipment by coating with a light oil or silicone. 17
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Engine fails to start 1. Fuel tank empty, or stale fuel 1. Fill tank with clean, fresh fuel 2. Spark plug wire disconnected 2. Connect wire to spark plug. 3. Faulty spark plug 3. Clean, adjust gap or replace. 4. Throttle control not in correct 4. Move throttle control to FAST position position Loss of power; operation erratic 1. Spark plug wire loose Engine overheats Too much vibration Unit does not discharge 2. Unit running on Choke 3. Blocked fuel line or stale fuel 4. Water or dirt in fuel system 5. Carburetor out of adjustment 6. Dirty air cleaner 1. Carburetor not adjusted properly 2. Engine oil level low 1. Loose parts or damaged impeller 1. Discharge chute clogged 2. Foreign object lodged in impeller 1. Connect and tighten spark plug wire 2. Move choke lever to OFF position 3. Clean fuel line; fill tank with clean, fresh gasoline. 4. Disconnect fuel line at carburetor to drain fuel tank. Refill with fresh fuel. 5. Contact your SEARS service center. 6. Service air cleaner. 1. 2. 1. Contact your SEARS service center Fill crankcase with proper oil Stop engine immediately and disconnect spark plug wire. Tighten all bolts and nuts. Make all necessary repairs. If vibration continues, have unit serviced by e SEARS service center. 1. Stop engine immediately and disconnect spark plug wire. clean flail screen and inside of blower housing. 2. Stop engine immediatelyand disconnect spark plug wire. Remove lodged object. Rate of discharge slows 1. Shredding blade and/or chipping 1. Sharpen or replace blade(s) considerably or composition of blade dull discharged material changes For repairs beyond the minor adjustments listed above, please contact your nearest SEARS service center. 18
SEARS CRAFTSMAN 8.5 H.P. CHIPPER-SHREDDER MODEL 247.775880 6 29 12 21 5 14 18 97 33 13 74 52 56 85 88 63 65 80 79 91 19
Key Part No No -- 770-1228A 1 11480 2 681-0118 3 681-0144 4 710-0542 710-0607 710-3256 7 712-0429 8 712-3027 9 714-0104 10 715-0129 11 726-0106 12 726-0135 13 728-0175 14 732-0546 15 732-0629 16 735-0127 17 735-0651 18 736-0119 19 738-0137A 20 738-0946 21 747-0531A 22 747-0747 23 747-1124 124 747-1125 ,25 781-0492A 126 781-0633 27 781-0698 28 781-0715 29 781-0752 30 781-0754-0689 31 781-0755-0689 32 738-0813 33 731-1899 37 710-0751 38 736-0173 39 712-3027 40 749-1004 41 710-0106 43 712-3010 44 736-0242 45 735-0249 48 681-0068-0689 Description Owner's Manual Stop Washer Inlet Guide Assembly Arm Bracket Assembly Hex Flange Bolt: 5/16-18 x 8.375" (Gr.5) Hex Washer Head Self-Tap- ping Screw: 5/16-18 x 0.5" Button-Head Screw 1/4-20 x 0.5" Lock Nut: 5/16-18 Hex Flange Lock Nut: 1/4-20 Internal Cotter Pin Spiral Pin Cap Nut Speed Cap Nut Pop Rivet Torsion Spring Hopper Door Spring Rubber Washer Hopper Flap Lock Washer Shdr. Scr: .340 x .285 x 1/4-20 Shdr. Scr: .56 x .165 x 5/16-18 Rel. Rod: 5/16" dia. Hopper Door Rod Flap Retaining Rod Flap Retaining Bail Hopper Pivot Door Chute Flap Strip Hopper Lock Bracket Shredder Plate Flap Mounting Bracket Upper Hopper Lower Hopper Shredder Axle Chipper Chute Hex Bolt 1/4-20 x .625 Flat Washer .28 I.d. x .74 O.d. Flanged Lock Nut Chipper Chute Support Hex Scr. 1/4-20 x .625 (Gr. 2) Hex Nut 5/16-18 Thd. (Gr. 5) Bell Washer .345" I.d. x .88" Shredder Chute Flap Chipper Chute Assembly Key Part No No 49 726-0214 50 734-0255 51 750-0793 52 712-3027 53 714-0149B 55 720-0170 56 710-0805 57 781-0510B 58 736-0366 59 734-1845 61 736-0170 63 681-0117-0689 65 710-0157 67 68 781-0490 69 712-0411 70 736-0119 71 681-0030 72 742-0571 73 781-0457-0637 74 681-0094 75 781-0735 76 715-0166 78 710-1054 79 710-3008 80 681-0004A-0689 82 710-0825 83 726-0211 85 711-0835 87 719-0329 88 711-0833B 89 710-1254 90 736-0217 91 736-0247 92 732-0306 93 7360117 94 714-0104 95 711-1304 96 736-0160 97 734,-1797 98 726-0299 99 747--0982 100 764-0501 Description Push Cap 5/8" dia, Ai r VaIve Chute Hinge Spacer Hex Ctr. Lock Nut 1/4-20 Thd. Internal Cotter Pin Hand Knob Hex Bolt 5/18-18 x 1.5" Shredder Frame Flat Washer 1,12 x ,64 x .120 Wheel Assembly Special Lock Washer Flail Housing Ass'y, -- Inner Hex Bolt 5/16-24 x ,75" Lg, Engine, Tecumseh 143.988503 Chipper Blade Hex Top Lock Nut 5/18-24 (Gr. 5) Lock Washer 5/16" I.d. impeller assembly Shredder Blade Shredder Screen Discharge Chute Assembly Retaining Clip Spring Roll Pin Flat Head Scr. 5/16-24 x .75" Hex Bolt 5/16-18 x .75" (Gr. 5) Flail Housing Ass'y. -- Outer Hex Bolt 1/4-20 x 3.75" U Nut 5/16-18 Clevis Pin Flail Blade Clevis Pin Hex Patch Bolt 3/8-24 x 2.25" (Gr. 8) Lock Washer 3/8" Flat Washer .406" I.d. x 1.25" Compression Spring Flat Washer Internal Cotter Pin Axle Shaft Flat Washer Complete Wheel: Grey Push Cap Lock Rod Shredder Bag 2O
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247.775880 35 4OO 310 3O5 757 87 7O 69 2g0 101 1t0 182 251 21
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247,775880 Key Part No. No. -- m 1 35385 2 27652 4 5 30969 15 30699C 15A 17 18 19 20 25 26 28 30 35 38 37 38 40 40 41 41 42 42 43 45 47 48 49 5O 60 65 69 70 71 72 75 30700 650494 33454 29916 651028 34663 35319 36460 650561 30322 36283A 29826 29918 29216 29642 40011 40012 40009 40010 40013 40014 27888 36897 651033 34034 36896 35375 33273A 650128 35262A 35376 35377 28582 35319 Key Part No. Description No. RPM Low 1700 80 31845 RPM High 3450 to 3750 81 30590A Cylinder (Incl. 2 & 20) 82 35378 Dowel Pin 83 30588A Oil Drain Extension 84 29193 Extension Cap 86 650833 Governor Rod (Incl. 15A & 87 650832 15B) 89 32589 Governor Yoke 90 611090 Screw, 6-40 x 5/16" 92 650880 Governor Lever 93 650881 Governor Lever Clamp 100 35135 Screw, Torx T-15, 8-32 x 3/8" 101 610118 Speed Control Spring 102 651024 Oil Seal 103 651007 B_ower Housing Baffle Screw, 1/4-20 x 5/8" 110 35187 Lock Nut, 8-32 119 36448 Crankshaft 120 36449 Screw, 10-32 x 3/4" 125 27878A Lock Washer 125 27880A Lock Nut, 10-32 126 34035 Retaining Ring 126 34036 Piston, Pin & Ring Set (std,) 127 650691 Piston, Pin & Ring Set (,010" 128 650690 os) 130 650694A Piston & Pin Assembly (std,) 130A 650273 Piston & Pin Assembly (.010" 130B 651031 os) 135 33636 Ring Set (std,) 139 33369 Ring Set (,010" os) 140 650836 Piston Pin Retaining Ring 149 27882 Connecting Rod Ass'y (incl. 149A 35862 47 & 49) 150 27881 Connecting Rod Bolt 151 32581 Valve Lifter 169 27896A Oil Dipper 170 28423 Camshaft (MCR) 171 28424 Blower Housing Extension 172 28425 Screw, 10-24 x 112" 173 36675A Cylinder Cover Gasket 173A 32446 Cylinder Cover (Incl. 71, 75 & 80) 174 650128 178 29752 Crankshaft Bushing Oil Drain Plug 182 30088A Oil Seal 184 33263 Description Governor Shaft Washer Governor Gear Ass'y. Governor Spool Retaining Ring Screw, 1/4-20 x 1-3/16" Screw, 1/4-20 x 1-11/16" Flywheel Key Flywheel Lock Washer Flywheel Nut Solid State Ignition Spark Plug Cover Solid State Mounting Stud Screw, Torx "1"-15, 10-24 x 15116" Ground Wire Cylinder Head Gasket Cylinder Head Exhaust Valve (std.) Exhaust Valve (1/32" os) Intake Valve (std.) Intake Valve (1/32" os) Washer Belleville Washer Screw, 5/16-18 x 2" Screw, 5/16-18 x 518" Screw, 1/4-20 x 9/16" Resistor Spark Plug Governor Gear Bracket Screw, 10-24 x 1/2" Valve Spring Cap Valve Spring Cap Valve Spring Valve Spring Keeper Breather Gasket Breather Body Breather Element Valve Cover Breather Tube Breather Tube Grommet Screw, 10-24 x 1/2"' Nut & Lock Washer Screw, 1/4-28 x 1" Carburetor to Intake Pipe Gasket 22
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247,775880 Key Part No. No. 185 34707 186 34667 200 34677 203 31342 204 651029 206 610973 207 33878 209 650821 215 35882 223 650378 224 27915A 238 28820 239 27272A 240 37104 242 33267 245 33268 245A 35881 250 33269A 251 650513 260 36250 261 650788 262 29747B 264A 650802 265 33272B 275 34185B 276 31588 277 650729 277A 651036 Description Key Part No. No. Intake Pipe 278 36908 Governor Link 280 36799A Control Bracket (Incl. 19,203 281 33013 & 204) 282 650760 Compression Spring 285 35985B Screw, Torx 3"-10, 5-40 x 7/16" 287 29752 Terminal 290 30962 Throttle Link 292 26460 Screw, 10-32 x 1/2" 298 650666 Control Knob 300 34186A Screw, Torx"1"-30, 5/16-18 x 1- 301 36246 Description Heat Shield Spacer Heat Shield Starter Bubble Cover Screw, 8-32 x 3/8" Starter Cup Nut & Lock Washer Fuel Line Fuel Line Clamp Screw, 1/4-15 x 3/4" Fuel Tank Fuel Cap 1/8 305 Intake Pipe Gasket 307 Screw, 10-32 x 1/2" 308 Air Cleaner Gasket 310 Air Cleaner Bracket 325 Air Cleaner Bracket 327 Air Cleaner Filter 339 Air Cleaner Filter 340 Air Cleaner Cover 341 Wing Nut, 1/4-20 342 Blower Housing 370G Screw, 5/16-18 x 3/4" 370J Screw, Torx T-40, 5/16-24 x 380 21132" 390 Screw, 1/4-20 x 5/8" 400 Cylinder Head cover 416 Muffler 900 Locking Plate 900 Screw, 5/16-18 x 3-3/16" Screw, 5/16-18 x 3-31132" 35554 35499 35540 36205 29443 35392 35880 34259 34258A 30063 35274 35703 640112 590746 36450B 34479A Oil Fill Tube O Ring Fill Tube Clip Dipstick Wire Clip Starter Plug Spacer Fuel Tank Bracket Fuel Tank Bracket Screw, Torx T-30, 1/4-20 x 1/2" Oil instruction Decal Throttle Decal Carburetor (Incl. 184) Rewind Starter Gasket Set Spark arrester Kit Replacement Engine none Replacement SB 756321, Order 71-999 23
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247.775880 Carburetor Key Part Description No. No. 640112 1 631776A 2 631970 4 631184 ,._ 5 631183 11 6 64O109 _12 7 650506 i 10 632740 "15 13 11 632043 // 12 631184 13 631183 14 631753 15 630735 16 632164 17 651025 18 630766 20 640027 20A 64O053 25 631867 27 631024 28 632019 29 631028 30 631021 31 631022 36 640113 37 632547 40 640114 44 27110 47 630748 48 631027 Carburetor (Incl. 184 of Engine Parts List) Throttle Shaft & Lever Assembly Throttle Return Spring Dust Seal Washer Dust Seal (Throttle) Throttle Shutter Shutter Screw Choke Shaft &Lever Assembly Choke Return Spring Dust Seal Washer Dust Seal (Choke) Choke Shutter Choke Positioning Spring Fuel Fitting Throttle Crack Screw/Idle Speed Screw Tension Spring Idle Mixture Screw Idle Restrictor Screw Float Bowl Float Shaft Float Float Bowl "O"-Ring Inlet Needle, Seat & Clip (Incl. 31) Spring Clip Main Nozzle Tube O Ring, Main Nozzle Tube High Speed Bowl Nut Bowl Nut Washer Welch Plug, Idle Mixture Well Welch Plug, Atmospheric Vent 24
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247.775880 Recoil Starter 590746 13 12 "8 6_'_6 ¢p-.4 Key Part Description No. No. 590746 1 590599A 2 590600 3 590679 4 590601 5 590678 6 590680 7 590412 8 590681 11 590747 12 590535 13 590701 Recoil Starter Spring Pin (Incl. 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spring Pulley & Rewind Spring Ass'y Starter Housing Ass'y Starter Rope (98" x 9/64" Dia,) Starter Handle 25
For the repair or replacement parts you need delivered directly to your home Call 7 am - 7 pm, 7 days a week 1-800-366-PART (1-800-366-7278) For in-home major brand repair service Call 24 hours a day, 7 days a week 1-8OO-4-REPAIR (1-800-473-7247) For the location of a Sears Parts and Repair Center in your area Call 24 hours a day, 7 days a week 1-800-488-1222 NN mm mmm mmm mmm mmmm For information on purchasing a Sears Maintenance Agreement or to inquire about an existing Agreement call 9 am - 5 pm, Monday-Saturday 1-800-827-6655 SEARS America's Repair Specialists
Content Page Content Page Warranty Information 2 Service & Adjustment 14 Safe Operation Practices 3 Off-Season Storage 16 Assembly 5 Trouble-Shooting 17 Operation 8 Repair Parts 18 Maintenance 11 One-Year Warranty on Craftsman Chipper-Shredder For one year from the date of purchase, when this Craftsman chipper-shredder is maintained, lubricated, and tuned up according to the operating and maintenance instructions in the owner's manual, Sears will repair, free of charge, any defect in material or workmanship. This warranty excludes blades, chipper blades, flails, air cleaners, spark plugs, catcher bags and tires which are expendable parts and become worn dudng normal use. If this chipper-shredder is used for commercial or rental purposes, this warranty applies for only 30 days from the date of purchase. WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER IN THE UNITED STATES. THIS WARRANTY APPLIES ONLY WHILE THIS PRODUCT IS IN USE IN THE UNITED STATES. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Sears, Roebuck and Co., D/817WA, Hoffman Estates, II 60179 These accessories were available when the chipper- shredder was purchased. They are also available at most Sears retail outlets, and service centers. Most Sears stores can order repair parts for you when you provide the model number of your Craftsman chipper-shredder. Spark Air Engine Gas Stabilizer Tow Hitch Kit Plug Filter Oil Can PRODUCT SPECIFICATION HORSEPOWER: CRANKCASE CAPACITY: FUEL TANK CAPACITY: SPARK PLUG: GAP TIRE PRESSURE 8,5 H.R 26oz. SAE 30 ENGINE OIL 4 Quart (UNLEADED) Champion (N4C) .030 24 PSI Model Number ............ 247.775880 .......................... Serial Number ........................................................... Date of Purchase ...................................................... Record both serial number and date of purchase and keep in a safe place for future reference. 2
This symbol points out important safety instructions which, if not followed, could endanger the per- sonal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate your chipper shredder. Failure to comply with these instructions may result in per- sonal injury. When you see this symbol-heed its warning. ] Your chipper-shredder was built to be operated according to the rules for safe operation in / RAN P_I=R- this manual. As with any type of power equipment, carelessness or error on the pert of the oper- / .......... ator can result in serious injury. If you violate any of these rules, you may cause serious / injury to yourself or others. / J ,_ WARNING: The Engine Exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. GENERAL OPERATION Read this owner's guide carefully in its entirety before attempting to assemble this machine. Read, understand, and follow all instructions on the machine and in the manual(s) before operation. Be completely familiar with the controls and the proper use of the machine before operating it. Keep this manual in a safe place for future and regular reference and for ordering replacement parts. Your chipper-shredder is a powerful tool, not a plaything. Therefore, exercise extreme caution at all times. Your unit has been designed to perform two jobs; to chip and shred vegetation found in a normal yard. Do not use it for any other purpose. Never allow children under age 16 to operate the unit. Children 16 years and older should only operate the unit under close parental supervision. Only responsible individuals who are familiar with these rules of safe operation should be allowed to use your unit, Keep the area of operation clear of all persons, particularly small children and pets. Stop the engine when they are in the vicinity of the unit. Keep work area clean and clear of branches or obstacles which could cause you to stumble or fall. When feeding material into this equipment, be extremely careful that pieces of metal, rocks, bottles, cans or other foreign objects are not included. Personal injury or damage to the machine could result. Always wear safety glasses or safety goggles, during operation and while performing an adjustment or repair, to protect eyes from foreign objects that may be thrown from the machine. Wear sturdy, reugh-soled work shoes and close fitting slacks and shirt. Shirt and slacks that cover the arms and legs and steel-tood shoes are recommended. Do not wear loose fitting clothes or jewelry and secure hair so it is above shoulder length. They can be caught in moving parts. Never operate a unit in bare feet, sandals or sneakers. Wear glovss when feeding matedal in the chipper chute or shredder hopper. Never place your hands, feet, or any part of your body into the shredder hopper, chipper chute, discharge opening, or near any moving part while the engine is running. Keep clear of the discharge opening at all times. If it becomes necassary to push matedal into the chipper chute or shredder hopper, use a small diameter stick, NOT YOUR HANDS. If it is necessary for any reason to unclog the feed intake or discharge openings or to inspect or repair any part of the machine where a moving part can come in contact with your body or clothing, stop the machine, allow it to cool, disconnect the spark plug wire from the spark plug and move it away from the spark plug before attempting to unclog, inspect or repair. Do not operate unit while under the influence of alcohol or drugs. The machine should only be operated on a level surface. Never operate your unit on a slippery, wet, muddy or icy surface. Keep your work area clean and clear of branches or obstacles which could cause you to stumble and fall. Do not overreach. Maintaining proper footing and balance is essential to preventing accidents. Do not allow an accumulation of processed material to build up in the discharge area as this will prevent proper discharge and can result in kick-back from the chipper chute. Keep your face and body back from chipper chute to avoid accidental bounce back of any material. Do not transport machine while engine is running. If the cutting mechanism stdkes a foreign object or if your machine should start making an unusual noise or vibration, immediately stop the engine and allow the machine to come to a complete stop. Disconnect the spark plug wire and move it away from the spark plug. Take the following steps. a. Inspect for damage. b. Repair or replace any damaged parts. o. Check for any loose parts and tighten to assure continued safe operation. Never attempt to attach or remove catcher bag when engine is running. Shut the engine off and wait for the
impeller to come to a complete stop. The impeller continues to rotate for a few seconds after the engine is shut off. Never place any part of the body in the impeller area until you are sure the impeller has stopped rotating. Muffler and engine become hot and can cause a bum. Do not touch. Do not allow leaves or other debris to build-up on engine's muffler. The debris could ignite and cause a fire. Do not attempt to shred or chip material larger than specified in this manual. Personal injury or damage to the machine could result. Do not operate engine if air cleaner or cover over carburetor air-intake is removed, except for adjustment. Removal of such parts could create a fire hazard. Only use accessories approved for this machine by the manufacturer. Read, understand, and follow all instructions provided with the approved accessory. If situations occur which are not covered by this manual, use care and good judgment. Contact your dealer for assistance. Keep discharge chute deflector, chipper chute door, and all other guards and safety devices in place and operating propady. Only operate unit in good daylight. Do not operate unit at night or in dark areas where your vision may be impaired, CHILDREN Tragic accidents can occur if the operator is not alert to the presence of small children. Children are often attracted to the chippar-shredder and the chipping and shredding activity. Never assume that children will remain where you last saw them. Keep children out of the work area and under the watchful eye of a responsible adult other than the operator. Be alert and turn the unit off ifa child enters the area. Never allow children under the age of 16 to operate the chipper-shredder, SERVICE Use extreme care in handling gasoline and other fuels. They are extremely flammable and the vapors are explosive. a. Store fuel and oil in approved containers, away from heat and open flame, and out of the reach of children. Check and add fuel before starting the engine. Never remove gas cap or add fuel while the engine is running. Allow engine to cool at least two minutes before refueling. b. Replaco gasoline cap securely and wipe off any spilled gasoline before starting the engine as it may cause a fire or explosion. c. Extinguish all cigarettes, cigars, pipes and other sources of ignition. d. Never refuel unit indoors because flammable vapors will accumulate in the area. e. Never store the machine or fuel container inside where there is an open flame or spark such as a gas hot water heater, space heater, clothes dryer or furnace. Never run your machine in an enclosed area as the exhaust from the engine contains carbon monoxide, which is an odorless, tasteless and deadly poisonous gas. To reduce fire hazard, keep engine and muffler free of leaves, grass, and other debris build-up. Clean up fuel and oil spillage. Allow unit to cool at least 5 minutes before storing. Before cleaning, repairing, or inspecting, make certain the impeller and all moving parts have stopped. Disconnect the spark plug wire and keep wire away from spark plug to prevent accidental starting. Do not use flammable solutions to clean air filter. Check the blade and engine mounting screws at frequent intervals for proper tightness. Also visually inspect blades for wear and/or damage (e.g., bent, cracked). Replace with blades which meet original equipment specifications. Keep all nuts, bolts, and screws fight to be sure the equipment is in safe working condition. Never tampar with safety devices. Check their proper operation regularly. After striking a foreign object, immediately stop the engine, disconnect the spark plug wire from the spark plug, and thoroughly inspect the unit for any damage. Repair damage before starting and operating unit. Do not alter or tamper with the engine's governor setting. The governor controls the maximum safe operating speed of the engine. Over-speeding the engine is dangerous and will cause damage to the engine and to other moving parts of the machine. YOUR RESPONSIBILITY Restrict the use of this power machine to persons who read, understand and follow the warnings and instructions in this manual and on the machine. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE This unit is equipped with an internal combustion egine and should not be used on or near any unimproved forest- covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest Sears Authorized Service Center (See the REPAIR PARTS section of this manual.)
Hopper* Chipper Chute Discharge Chute Bottle of Oil Safety Glasses Catcher Bag * The hopper is packed in the top insert in your chipper-shredder carton. Figure 1 IMPORTANT: This unit is shipped without gasoline or oil in the engine, Al_er assembly, see OPERATION section of this manual for proper fuel and engine oil fill-up. NOTE: To determine right and left hand sides of your chipper-shredder, stand behind the unit with the engine farthest away from you. Your chipper-shredder has been completely assembled at the factory, except for the hopper assembly, chipper chute, discharge chute and the catcher bag. These parts are shipped loose in the carton. A pair of safety glasses and a bottle ofoil are also included in the canon. UNPACKING FROM CARTON Cut the corners of the canon. Remove all packing inserts. Remove all loose parts including owner's manual. See figure 1. Roll chipper-shredder out of the canon. Make certain all parts and literature have been removed before the carton is discarded. LOOSE PARTS (Refer to figure 1 .) a, Hopper Assembly b. Discharge Chute c. Chipper Chute d. Catcher Bag e. Bottle of Oil f. Safety Glasses g. Owner's Manual (not shown in figure 1) TOOLS REQUIRED 1. 1/2" or Adjustable Wrenches 2. 7/16" or Adjustable Wrenches 3. 9/16" or Adjustable Wrenches 4. Funnel DISCONNECTING SPARK PLUG Disconnect the spark plug wire and move it away from the spark plug before assembling the chipper-shredder. See figure 2. Spark Plug Wire Figure 2 ATTACHING DISCHARGE CHUTE Remove the wing knobs from each side of the discharge opening on the chipper-shredder. See figure 3. Using two 7/16" wrenches, remove hex lock nut, two spacers, and the bex bolt from top of the housing assembly. For easy assembly, do not remove the second spacer from the hex bolt. Place the discharge chute in position on the discharge opening. Insert hex bolt and spacer
through hinge on discharge chute and housing (spacer fits inside of hinge). See figure 3 inset. Spac_er _-J-_ Hex Nut --Hex Bolt Hinge \ Hopper Pivot Door Inlet Guide Opening He_ Hopper Nut Wing Dischargl Figure 3 Place second spacer over hex bolt inside the other part of the hinge. Secure with hex lock nut. Tighten securely. Secure both sides of discharge chute to housing using wing knobs that you earlier removed. Tighten wing knobs. ATTACHING HOPPER ASSEMBLY Remove the 8-3/8" long hex bolt and the hex nut from the bottom of the inlet guide opening. See figure 4 inset. Place the hopper assembly on the ground and hold it in the position shown in step 1 in figure 4. Holding the hopper, push hopper pivot door down inside the hopper. See figure 4. Slide the hopper assembly towards the chipper- shredder housing so that the upper guide on the hopper assembly slides under the stop washer on each side of the inlet guide, See figure 4. Align the two holes (one on each side) of the lower hopper with the two holes (one on each side) of the inlet guide. See figure 4 inset. insert the hex bolt (that you earlier removed) from the left through the hole on the hopper and the inlet guide. Insert the hex nut onto the bolt from the other side. See figure 4 inset. Tighten the bolt till the lock nut is engaged. Make sure to remove sideplay from the bolt, but the hopper should be able to pivot. Inlet 1. Guide Hopper Figure 4 To raise the hopper, hold the hopper by the hand-hold and lift it up till it clicks into position. To Iowerthe hopper, hold the hopper by the hand-hold and pull the release bar. The hopper should drop down. See figure 5. Release Bar Figure 5 The flap control rod is already attached to the hopper at the top. The other end of the rod has to be attached to the stop washer on the inlet guide. See figure 6. Raise the hopper till it clicks into position. Unscrew the shoulder bolt from the stop washer on the inlet guide. See figure 6. Align the loose end of the flap control rod with the stop washer on the inlet guide. Slide the shoulder bolt through the opening in the flap control rod. Secure tightly. See figure 6.
& WARNING; This flap control rod is a safety device to hold the flap in place inside the hopper while shredding branches. Do not operate the chipper-shredder without properly attaching this flap control rod to the unit. Stop Hex Washer* Nut* // =ett I / io_ Chipper Chute \ \ Insert one each of the hex bolts, lock nuts, and flat washers (that you earlier removed) through each hole in the chute and the brace. Tighten these bolts to secure brace to the chute. Tighten bolts securing the brace to the lower frame. These bolts had been removed eadier. Tighten the three nuts on the weld studs. Cupped Washer Weld Stud Weld Stud Attach flap control rod here Flap Control Rod * Do not remove these hardware from the inlet guide assembly while attaching the flap control rod. Figure 6 ATTACHING THE CHIPPER CHUTE Your unit is shipped with one end of the brace already secured to the lower frame. Loosen the bolts securing the brace to the frame. Remove the three cupped washers and hex nuts from the weld studs beside the opening on the left side of the housing. See figure 7. Remove the two sets of hex bolt, lock nut, and fiat washer from the two holes on the upper end of the brace as shown in figure 7. Place the chipper chute over the weld studs so the slot on the chute is towards the bottom. Align the three holes at the bottom of the chute with the three weld studs. Secure with the three pairs of cupped washers and hex nuts that you earlier removed. Do not tighten the nuts at this time. Make sure to place the cupped side of the washer against the chipper chute. Align the holes towards the front opening of the chute with the holes on the brace. See figure 7. Washer Chu_ Bmce Figure 7 ATTACHING THE CATCHER BAG Your chipper-shredder is equipped with a catcher bag to catch the shredded material. To attach the bag, place the opening of the bag over the chute deflector and the chute flange. Make sure it completely covers the chute deflector. Depress the plunger on the drawstring, and pull on the drawstring until the bag is tight around the chute opening. Release plunger to lock it into position. See figure 8. Catcher Bag Plunger Figure8
Read this owner's manual and safety rules before operating your chipper-shredder. Compare the illustration in figure 9 with your chipper-shredder to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference. _ he operation of any chipper-shredder can result in foraign objects being thrown into the eyes, which can result in severe eye damage. Always wear safety glasses provided with the chipper-shredder before chipping or shredding, or while performing any adjustments or repairs. Release Bar Rear Wheel Lock Lever Figure 9 OPERATING CONTROLS (Refer to Figure 9,) Release Bar Used to release the hopper when raising or lowering. Choke Lever Used to enrich the fuel mixture in the carburetor when starting a cold engine. Starter Handle Used to manually start the engine. Hopper Assembly Allows leaves and small branches upto 1" diameter to be fed into the impeller for chipping and shredding, Lower the hopper to collect raked material for shredding. Throttle Control Regulates speed of the engine. Chipper Chute Allows bulky vegetation like stalks or heavy branches upto 3" diameter to be fed into the impeller for chipping and shredding. Catcher Bag (not shown) Used to collect the shredded material. Rear Wheel Lock Lever Used to lock the rear wheels from moving. Stopping Engine Move throttle control lever to STOP position. Disconnect spark plug wire and move away from spark plug to prevent accidental starting. MEETS ANSI SAFETY STANDARDS Sears chipper-shredders conform to the safety standard B 71.6 -1990 of the American National Standards Institute. 8
WARNING: Before using yourchipper- shredder, again refer to the safety rules on pages 3 and 4 of this manual. Always be careful. GAS AND OIL FILL-UP Oil (Packed with unit) Only use high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's viscosity grade according to your expected operating temperature. Follow the chart below. 32°F Warmer Colder _ I 5W30 I SAE 30 NOTE: Although multi-viscosity oils (5W30, 10W30, etc.) improve starting in cold weather, these multiviscosity oils will result in increased oil consumption when used above 32°F. Check the oil level more frequently to avoid possible engine damage from running low on oil. Fill engine with oil as follows. Remove oil fill dipstick. See figure 10. Remove cap and fill gas Remove dipstick \ Figure 10 With chipper-shredder on level ground, use a funnel to fill engine with oil to FULL mark on dipstick. Capacity is approximately 26 ounces. Be careful not to overfill. Check oil level. Add oil if necessary. Replace dipstick and tighten. NOTE: Do not overfill. Oil bottle packed with unit contains 26 oz. of oil. Gasoline WARNING: Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage for 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel next season. See STORAGE instructions for additional information. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. Fill gas tank with gas as follows. Remove fuel cap. See figure 10. Make sure the container (from which you will pour the gasoline) is clean and free from rust or foreign particles. Never use gasoline that may be stale from long periods of storage in the container. Fill fuel tank with clean, fresh, lead-free automotive gasoline. DO NOT use Ethyl or high octane gasoline. See figure 10. Replace fuel cap. WARNING: Do not fill closer than 1/2 inch of top of fuel tank to prevent spills and to allow for fuel expansion. If gasoline is accidently spilled, move chipper-shredder away from area of spill. Avoid creating any source of ignition until gasoline vapors have disappeared. Check the fuel level periodically to avoid running out of gasoline while operating the chipper- shredder. If the unit runs out of gas as it is shredding or chipping, it may be necessary to unclog the unit before it can be restarted. Refer to "Removing the Flail Screen" instructions in SERVICE AND ADJUSTMENT section. STARTING ENGINE & WARNING: Be sure no one other than the operator is standing near the chipper- shredder while starting or operating the unit. Do not operate this chipper-shredder unless the chute deflector has been properly installed and secured with hand knobs.
NOTE: TO prevent the unit from sliding, place your foot firmly against the tire. 1. Attach spark plug wire -- \ 3. Move choke to "on" position 2. Place throttle in Fast Position 4. Pull rope Figure 1t Attach spark plug wire and rubber boot to spark plug. See figure 11. Place throttle in FAST position. See figure 11. Move choke lever to CHOKE position (in the direction of the arrow) as shown. If restarting a warm engine after a short shutdown, move choke lever to =No Choke" position. Grasp starter handle and pull rope out slowly until engine reaches start of compression cycle (rope will pull slightly harder at this point). Let the rope rewind slowly. Pull rope with a rapid full arm stroke. Let rope return to starter slowly. See figure 11. When engine starts, move choke lever to half choke position until engine runs smoothly and then to No Choke position. If engine fails to start after three pulls, move choke lever to No Choke position and pull starter rope again. If engine rims, but does not continue to run, move choke lever to Full Choke position and pull rope again. Move choke lever to OFF position as engine warms up. NOTE: A noise will be heard when finding the start of the compression cycle. This noise is caused by the flails and fingers which are part of the shredding mechanism falling into place, and should be expected./n addition, the flails and fingers will be noisy after the engine is started, until the impeller reaches furl speed. STOPPING ENGINE Move starter switch to OFF position. Disconnect spark plug wire and move away from spark plug to prevent accidental starting. USING YOUR CHIPPER-SHREDDER A WARNING: Do not attempt to shred or chip any matedal other than vegetation found in a normal yard (i.e., branches, leaves, twigs, etc.). The chipper-shredder is designed for two different methods of operation. a. Leaves and small branches up to 1/2" diameter (maximum) can be fed into the hopper assembly when it is in the raised or lowered position. See figure 12. b. Bulky material, such as stalks or heavy branches, up to 3" in diameter should be fed into the chipper chute. See figure 12. A WARNING: Do not put material larger than is specified into the hopper, and/or into the chipper chute. Personal injury or damage to the machine could result. If it becomes necessary to push material into the chipper-shmdder, use a small diameter stick - NOT YOUR HANDS. The stick should be small enough that it will be ground up if it gets into the impeller assembly. LOWER THE HOPPER ASSEMBLY To lower the hopper assembly, use one hand to grasp the hand-hold at the top of the hopper assembly and lift slightly. See figure 5. Pull up on the release bar, and lower the hopper assembly to the ground. Release the bar. See figure 5. A WARNING: Never remove chute deflector till the unit has completely stopped. Never shut offthe engine until all chipping is completed. For best performance, it is important to keep the shredding blade and the chipper blades sharp. If the composition of the material being discharged 10
changes (becomes stdngy, etc.) or if the rate at which the material is discharged slows down considerably, it is likely that the shredding blade and/or chipper blades are dull and need to be sharpened or replaced. Refer to Service and Adjustments section. IMPORTANT: There is a flail screen located inside the housing in the discharge area. If the flail screen becomes clogged, remove and clean as instructed in the Service and Adjustments section. A WARNING: The chipper-shredder discharges materials with considerable velocity. Keep away from the area around the discharge chute. Always stop the engine and disconnect spark plug wire when removing or attaching the bag, changing containers, or removing the shredded matarial. Wear safety glasses and gloves whenever using your chipper-shredder. Shred material upto 1/2 inch in diameter / Chip material upto 3 inches in diameter Catch shredded material in catcher bag Lower the hopper to collect raked material for shredding Figure 12 GENERAL RECOMMENDATIONS Always observe safety rules when performing any maintenance. The warranty on this chipper shredder does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain the chipper- shredder as instructed in this manual. Some adjustments will need to be made periodically to maintain your unit properly. All adjustments in the Service and Adjustments section of this manual should be checked at least once each season. Follow the maintenance schedule given below. Periodically check all fasteners and make sure these are tight. A WARNING: Always stop the engine and disconnect the spark plug wire before performing any maintenance or adjustments. Never remove discharge chute till the engine has completely stopped. CLEANING Clean the chipper-shredder by running water from a hose through the hopper assembly and chipper chute with the engine running. Allow the chipper-shredder to dry thoroughly. Wash the bag pedodically with water. Allow to dry thoroughly in the shade. Do not use heat. ENGINE MAINTENANCE Engine Oil Only use high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's viscosity grade according to your expected 11
CUSTOMER RESPONSIBILITIES o MAINTENANCE _ _ ..,P e,_P _3 =_ sc. oo, o,O { o ,v.C o,TEs Oil pivot points 0 Clean shredder _ a. Check engine oil ,,, Change engine oil <_ Service air cleaner ILl Clean engine _ Reset spark plug _ Clean muffler operating temperature. Refer to page 9 of this To Service Air Cleaner: manual for viscosity chart. 1. The four-cycle engine of your chipper-shredder will normally consume some oil. Therefore, 2. check engine oil level regularly approximately avery five hours of operation and before each 3. usage. Stop engine and wait several minutes before checking oil level. With engine on level ground, the oil must be to FULL mark on dipstick. Change engine oil after the first five hours of operation, and every twenty-five hours thereafter. To Drain Oil Drain oil while engine is warm. Follow the instructions given below. Remove oil drain plug. Catch oil in a suitable container. When engine is drained of all oil, replace drain plug securely. Refill with fresh oil. Refer to GAS AND OIL FILL-UP section. Replace dipstick. Air Cleaner The air cleaner prevents damaging dirt, dust, etc., from entering the carburetor and being forced into the engine and is important to engine life and performance. The air cleaner consists of a pre- cleaner or foam filter, and a paper filter. Never run the engine without air cleaner completely assembled. Service pre-cleaner after every 25 hours of use, or at least once a season. Service filter every 100 hours of use, or at least once a season. Service pre-cleaner and filter more often under dusty conditions. Remove wing nut and cover. Slide pre-cleaner off filter. Clean the inside of base and cover thoroughly. Clean pre-cleanar as follows: (See figure 13.) a. Wash in water and detergent solution, and squeeze(donottwist) untilalldirtisramoved. b. Rinse thoroughly in clear water. c. Wrap in a clean cloth and squeeze (do not twist) until completely dry, or allow to air dry. d. Saturate with engine oil and squeeze (don't twist) to distribute oil and remove excess oil. L Base Foam Filter -- Wing Nut-- Paper Filter Figure 13 NOTE: If the pre-cleaner is torn or damaged in any way, replace it. 12
If necessary, replace paper filter (do not attempt to clean). Install new filter on base. Slide pre-cleaner over filter. Install cover and wing nut. Tighten wing nut securely. Clean Engine Clean engine periodically. Remove dirt and debris with a cloth or brush. Frequently remove grass clippings, dirt and debris from cooling fins, air intake screen and levers and linkage. See figure 14. This will help ensure adequate cooling and correct engine speed. Clean cooling Figure 14 Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in figure 14 to avoid overspeeding, overheating and engine damage. Clean more often if necessary. NOTE: Cleaning with a forceful spray of water is not recommended as water could contaminate the fuel system. WARNING: Temperature of muffler and nearby areas may exceed 150 ° F(65°C). Avoid these areas, Spark Plug Clean the spark plug and reset the gap to .030" at least once a season or every 50 hours of operation. See figure 15. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type. ' Feeler ( Plug Figure 15 NOTE: Do not sandblast spark plug. Spark plug should be cleaned by scraping or wire brushing and washing with a commercial solvent. Muffler A WARNING: Do not operate the chipper- shredder without a muffler, or tamper with the exhaust system. Damaged mufflers or spark arresters could create a fire hazard. Inspect periodically, and replace if necessary. If your engine is equipped with a spark arrester screen assembly, remove every 50 hours for cleaning and inspection. Replace if damaged. & WARNING: Always stop engine, disconnect spark plug wire, and move it away from spark plug before performing any adjustments or repairs. LUBRICATION Lubricate the pivot points on the release bar, hopper assembly, chute deflector and chipper chute once a season using a light oil. See figure 16 Figure 16: Lubrication Chart 13
14
REMOVING THE FLAIL SCREEN If the discharge area becomes clogged, remove the flail screen and clean area as follows. Stop engine, make certain the chipper- shredder has come to a complete stop and disconnect spark plug wire from the spark plug before unclogging the chute. Remove the two hand knobs on each side of the discharge chute (also called the chute deflector). Lift the discharge chute up, and keep it out of the way. Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins, See figure 17. Pull the flail screen from inside the housing. See figure 17. Clean the screen by scraping or washing with water. Reinstall the screen. Put the discharge chute back to its original position and tighten the hand knobs. NOTE: Be certain to reassemble the flail screen with the curved side down. Chute Deflector Chipper Chute Remove the flail screen as instructed in previous section. Using a 1/2" wrench, remove the chipper chute by removing three hex nuts and washers. See figure 17, Using a 7/16" wrench, remove the brace (holding the chute to the frame) by removing the hex bolts. NOTE: When re-assembling, the cupped washer goes on the slot toward the bottom of the chipper chute with the cupped side against the chute. Rotate the impeller assembly by hand until you locate one of the two chipper blades in the chipper chute opening. Remove the blade, using a 3/16" allen wrench on the outside of the blade and 1/2" wrench on the impeller assembly (inside the housing). See figure 18. Slot Blade Hex Nut, Washer Hand Knobs Figure 17 SHARPENING OR REPLACING THE BLADES Chipper Blades Disconnect spark plug wire and move it away from spark plug. Figure 18 Remove the other blade in the same manner. Replace or sharpen blades. If sharpening, make certain to remove an equal amount from each blade. Reassemble in reverse order. Make certain blades are reassembled with the sharp edge facing the direction shown in figure 18 (sharp edge is assembled toward the slotted opening at the bottom). Torque bolts and nuts to 250-350 inch-pounds. Shredding Blade The shredding blade may be removed for sharpening or replacement as follows. 15
Disconnect spark plug wire and move it away from spark plug. Lower the hopper assembly. Block up the housing. See figure 19. Weld Bolt Allen Screw Pipe cause damage to the unit. The blade can be tasted for balance by balancing it on a round shaft screwddver or nail. Remove metal from the heavy side until it is balanced evenly. See figure 20. When reassembling the blade, tighten center bolt to between 550 and 650 inch-pounds and the two outer bolts to between 250and 350 inch- pounds, or lacking torque wrench, tighten securely. 1. insert screw driver through hole d/ 2. Blade should be parallel to ground Screv_ Driver\ Blade i I -- Ground Torque Wrench Figure 20 Figure 19 Remove the six hex lock nuts and lock washers from the housing weld bolts using a 1/2" wrench. Separate the chipper-shredder into two halves. Remove the back-up plate. NOTE: When reassembling, make certain the embossed tab faces inward towards the impeller, and opening on the back-up plate is toward the bottom of the unit. Remove the two hand knobs and cupped washers which secure the chute deflector. Raise the chute deflector. Insert a 1/2" or 3/4" diameter pipe through the flail screen into the impeller to keep it from turning, or remove the flail screen and insert a piece of wood (2 x 4) into the chute opening. Remove the two outside screws on the blade, using a 3/16" allen wrench and a 1/2" wrench. Remove the blade by removing the center bolt, lock washer and fiat washer. ,_ WARNING: Use caution when removing the blade to avoid contacting the weld bolts on the housing. When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equat amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds and may ADJUSTING CARBURETOR A WARNING: If any adjustments are made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of heated surfaces and muffler. The carburetor has been pre-set at the factory and should not require adjustment. However, if your engine does not operate properly due to suspected carburetor problems, take your chipper-shredder to your nearest SEARS service center. ENGINE SPEED The engine speed on your chipper-shredder has been set at the factory. Do not attempt to increase engine speed or it may result in personal injury. If you believe the engine is running too fast or too slow, take your chipper-shredder to the nearest SEARS service center for repair and adjustment. TIRES Recommended operating tire pressure is 24 p.s.i. (sidewall of tire may give tire manufacturers recommended pressure). Equal tire pressure should be maintained on both tires. WARN I N G: Excessive pressure when seating beads may cause tire/rim assembly to burst with force sufficient to cause serious injury. 16
Prepare your chipper-shredder for storage at the end of the season or if the unit will not be used for 30 days or more. A WARNING: Never store machine with fuel in the fuel tank inside of building where fumes may reach an open flame or spark, or where ignition sources are present such as hot water end space heaters, furnaces, clothes dryers, stoves, electric motors, etc. A yearly check-up by your local Sears service center is a good way to make certain your chipper-shredder will provide maximum performance for the next season. CHIPPER-SHREDDER Clean the chipper-shredder thoroughly. Wipe unit with an oiled rag to prevent rust (use a light oil or silicone). ENGINE IMPORTANT; It is important to prevent gum deposits from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose, or tank during storage. Also, experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. Drain the fuel tank. Start the engine and let it run until the fuel lines and carburetor are empty. Drain carburetor by pressing upward on bowl drain which is located below the carburetor. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. Use fresh fuel next season. NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container. Always follow the mix ratio found on stabilizer container. Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the carburetor. Do not drain the gas tank and carburetor if using fuel stabilizer. Drain all the oil from the crankcase (this should be done after the engine has been operated and is still warm) and refill the crankcase with fresh oil. If you have drained the fuel tank, protect the inside of the engine as follows. Remove spark plug, pour approximately 1/2 ounce (approximately one tablespoon) of engine oil into cylinder and crank slowly to distribute oil. Replace spark plug. OTHER Do not store gasoline from one season to another. Replace your gasoline can if your can starts to rust. Rust and/or dirt in your gasoline will cause problems. Store unit in a clean, dry area. Do not store next to corrosive materials, such as fertilizer. NOTE; ff storing in an unventilated or metal storage shed, be certain to rustproof the equipment by coating with a light oil or silicone. 17
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Engine fails to start 1. Fuel tank empty, or stale fuel 1. Fill tank with clean, fresh fuel 2. Spark plug wire disconnected 2. Connect wire to spark plug. 3. Faulty spark plug 3. Clean, adjust gap or replace. 4. Throttle control not in correct 4. Move throttle control to FAST position position Loss of power; operation erratic 1. Spark plug wire loose Engine overheats Too much vibration Unit does not discharge 2. Unit running on Choke 3. Blocked fuel line or stale fuel 4. Water or dirt in fuel system 5. Carburetor out of adjustment 6. Dirty air cleaner 1. Carburetor not adjusted properly 2. Engine oil level low 1. Loose parts or damaged impeller 1. Discharge chute clogged 2. Foreign object lodged in impeller 1. Connect and tighten spark plug wire 2. Move choke lever to OFF position 3. Clean fuel line; fill tank with clean, fresh gasoline. 4. Disconnect fuel line at carburetor to drain fuel tank. Refill with fresh fuel. 5. Contact your SEARS service center. 6. Service air cleaner. 1. 2. 1. Contact your SEARS service center Fill crankcase with proper oil Stop engine immediately and disconnect spark plug wire. Tighten all bolts and nuts. Make all necessary repairs. If vibration continues, have unit serviced by e SEARS service center. 1. Stop engine immediately and disconnect spark plug wire. clean flail screen and inside of blower housing. 2. Stop engine immediatelyand disconnect spark plug wire. Remove lodged object. Rate of discharge slows 1. Shredding blade and/or chipping 1. Sharpen or replace blade(s) considerably or composition of blade dull discharged material changes For repairs beyond the minor adjustments listed above, please contact your nearest SEARS service center. 18
SEARS CRAFTSMAN 8.5 H.P. CHIPPER-SHREDDER MODEL 247.775880 6 29 12 21 5 14 18 97 33 13 74 52 56 85 88 63 65 80 79 91 19
Key Part No No -- 770-1228A 1 11480 2 681-0118 3 681-0144 4 710-0542 710-0607 710-3256 7 712-0429 8 712-3027 9 714-0104 10 715-0129 11 726-0106 12 726-0135 13 728-0175 14 732-0546 15 732-0629 16 735-0127 17 735-0651 18 736-0119 19 738-0137A 20 738-0946 21 747-0531A 22 747-0747 23 747-1124 124 747-1125 ,25 781-0492A 126 781-0633 27 781-0698 28 781-0715 29 781-0752 30 781-0754-0689 31 781-0755-0689 32 738-0813 33 731-1899 37 710-0751 38 736-0173 39 712-3027 40 749-1004 41 710-0106 43 712-3010 44 736-0242 45 735-0249 48 681-0068-0689 Description Owner's Manual Stop Washer Inlet Guide Assembly Arm Bracket Assembly Hex Flange Bolt: 5/16-18 x 8.375" (Gr.5) Hex Washer Head Self-Tap- ping Screw: 5/16-18 x 0.5" Button-Head Screw 1/4-20 x 0.5" Lock Nut: 5/16-18 Hex Flange Lock Nut: 1/4-20 Internal Cotter Pin Spiral Pin Cap Nut Speed Cap Nut Pop Rivet Torsion Spring Hopper Door Spring Rubber Washer Hopper Flap Lock Washer Shdr. Scr: .340 x .285 x 1/4-20 Shdr. Scr: .56 x .165 x 5/16-18 Rel. Rod: 5/16" dia. Hopper Door Rod Flap Retaining Rod Flap Retaining Bail Hopper Pivot Door Chute Flap Strip Hopper Lock Bracket Shredder Plate Flap Mounting Bracket Upper Hopper Lower Hopper Shredder Axle Chipper Chute Hex Bolt 1/4-20 x .625 Flat Washer .28 I.d. x .74 O.d. Flanged Lock Nut Chipper Chute Support Hex Scr. 1/4-20 x .625 (Gr. 2) Hex Nut 5/16-18 Thd. (Gr. 5) Bell Washer .345" I.d. x .88" Shredder Chute Flap Chipper Chute Assembly Key Part No No 49 726-0214 50 734-0255 51 750-0793 52 712-3027 53 714-0149B 55 720-0170 56 710-0805 57 781-0510B 58 736-0366 59 734-1845 61 736-0170 63 681-0117-0689 65 710-0157 67 68 781-0490 69 712-0411 70 736-0119 71 681-0030 72 742-0571 73 781-0457-0637 74 681-0094 75 781-0735 76 715-0166 78 710-1054 79 710-3008 80 681-0004A-0689 82 710-0825 83 726-0211 85 711-0835 87 719-0329 88 711-0833B 89 710-1254 90 736-0217 91 736-0247 92 732-0306 93 7360117 94 714-0104 95 711-1304 96 736-0160 97 734,-1797 98 726-0299 99 747--0982 100 764-0501 Description Push Cap 5/8" dia, Ai r VaIve Chute Hinge Spacer Hex Ctr. Lock Nut 1/4-20 Thd. Internal Cotter Pin Hand Knob Hex Bolt 5/18-18 x 1.5" Shredder Frame Flat Washer 1,12 x ,64 x .120 Wheel Assembly Special Lock Washer Flail Housing Ass'y, -- Inner Hex Bolt 5/16-24 x ,75" Lg, Engine, Tecumseh 143.988503 Chipper Blade Hex Top Lock Nut 5/18-24 (Gr. 5) Lock Washer 5/16" I.d. impeller assembly Shredder Blade Shredder Screen Discharge Chute Assembly Retaining Clip Spring Roll Pin Flat Head Scr. 5/16-24 x .75" Hex Bolt 5/16-18 x .75" (Gr. 5) Flail Housing Ass'y. -- Outer Hex Bolt 1/4-20 x 3.75" U Nut 5/16-18 Clevis Pin Flail Blade Clevis Pin Hex Patch Bolt 3/8-24 x 2.25" (Gr. 8) Lock Washer 3/8" Flat Washer .406" I.d. x 1.25" Compression Spring Flat Washer Internal Cotter Pin Axle Shaft Flat Washer Complete Wheel: Grey Push Cap Lock Rod Shredder Bag 2O
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247.775880 35 4OO 310 3O5 757 87 7O 69 2g0 101 1t0 182 251 21
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247,775880 Key Part No. No. -- m 1 35385 2 27652 4 5 30969 15 30699C 15A 17 18 19 20 25 26 28 30 35 38 37 38 40 40 41 41 42 42 43 45 47 48 49 5O 60 65 69 70 71 72 75 30700 650494 33454 29916 651028 34663 35319 36460 650561 30322 36283A 29826 29918 29216 29642 40011 40012 40009 40010 40013 40014 27888 36897 651033 34034 36896 35375 33273A 650128 35262A 35376 35377 28582 35319 Key Part No. Description No. RPM Low 1700 80 31845 RPM High 3450 to 3750 81 30590A Cylinder (Incl. 2 & 20) 82 35378 Dowel Pin 83 30588A Oil Drain Extension 84 29193 Extension Cap 86 650833 Governor Rod (Incl. 15A & 87 650832 15B) 89 32589 Governor Yoke 90 611090 Screw, 6-40 x 5/16" 92 650880 Governor Lever 93 650881 Governor Lever Clamp 100 35135 Screw, Torx T-15, 8-32 x 3/8" 101 610118 Speed Control Spring 102 651024 Oil Seal 103 651007 B_ower Housing Baffle Screw, 1/4-20 x 5/8" 110 35187 Lock Nut, 8-32 119 36448 Crankshaft 120 36449 Screw, 10-32 x 3/4" 125 27878A Lock Washer 125 27880A Lock Nut, 10-32 126 34035 Retaining Ring 126 34036 Piston, Pin & Ring Set (std,) 127 650691 Piston, Pin & Ring Set (,010" 128 650690 os) 130 650694A Piston & Pin Assembly (std,) 130A 650273 Piston & Pin Assembly (.010" 130B 651031 os) 135 33636 Ring Set (std,) 139 33369 Ring Set (,010" os) 140 650836 Piston Pin Retaining Ring 149 27882 Connecting Rod Ass'y (incl. 149A 35862 47 & 49) 150 27881 Connecting Rod Bolt 151 32581 Valve Lifter 169 27896A Oil Dipper 170 28423 Camshaft (MCR) 171 28424 Blower Housing Extension 172 28425 Screw, 10-24 x 112" 173 36675A Cylinder Cover Gasket 173A 32446 Cylinder Cover (Incl. 71, 75 & 80) 174 650128 178 29752 Crankshaft Bushing Oil Drain Plug 182 30088A Oil Seal 184 33263 Description Governor Shaft Washer Governor Gear Ass'y. Governor Spool Retaining Ring Screw, 1/4-20 x 1-3/16" Screw, 1/4-20 x 1-11/16" Flywheel Key Flywheel Lock Washer Flywheel Nut Solid State Ignition Spark Plug Cover Solid State Mounting Stud Screw, Torx "1"-15, 10-24 x 15116" Ground Wire Cylinder Head Gasket Cylinder Head Exhaust Valve (std.) Exhaust Valve (1/32" os) Intake Valve (std.) Intake Valve (1/32" os) Washer Belleville Washer Screw, 5/16-18 x 2" Screw, 5/16-18 x 518" Screw, 1/4-20 x 9/16" Resistor Spark Plug Governor Gear Bracket Screw, 10-24 x 1/2" Valve Spring Cap Valve Spring Cap Valve Spring Valve Spring Keeper Breather Gasket Breather Body Breather Element Valve Cover Breather Tube Breather Tube Grommet Screw, 10-24 x 1/2"' Nut & Lock Washer Screw, 1/4-28 x 1" Carburetor to Intake Pipe Gasket 22
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247,775880 Key Part No. No. 185 34707 186 34667 200 34677 203 31342 204 651029 206 610973 207 33878 209 650821 215 35882 223 650378 224 27915A 238 28820 239 27272A 240 37104 242 33267 245 33268 245A 35881 250 33269A 251 650513 260 36250 261 650788 262 29747B 264A 650802 265 33272B 275 34185B 276 31588 277 650729 277A 651036 Description Key Part No. No. Intake Pipe 278 36908 Governor Link 280 36799A Control Bracket (Incl. 19,203 281 33013 & 204) 282 650760 Compression Spring 285 35985B Screw, Torx 3"-10, 5-40 x 7/16" 287 29752 Terminal 290 30962 Throttle Link 292 26460 Screw, 10-32 x 1/2" 298 650666 Control Knob 300 34186A Screw, Torx"1"-30, 5/16-18 x 1- 301 36246 Description Heat Shield Spacer Heat Shield Starter Bubble Cover Screw, 8-32 x 3/8" Starter Cup Nut & Lock Washer Fuel Line Fuel Line Clamp Screw, 1/4-15 x 3/4" Fuel Tank Fuel Cap 1/8 305 Intake Pipe Gasket 307 Screw, 10-32 x 1/2" 308 Air Cleaner Gasket 310 Air Cleaner Bracket 325 Air Cleaner Bracket 327 Air Cleaner Filter 339 Air Cleaner Filter 340 Air Cleaner Cover 341 Wing Nut, 1/4-20 342 Blower Housing 370G Screw, 5/16-18 x 3/4" 370J Screw, Torx T-40, 5/16-24 x 380 21132" 390 Screw, 1/4-20 x 5/8" 400 Cylinder Head cover 416 Muffler 900 Locking Plate 900 Screw, 5/16-18 x 3-3/16" Screw, 5/16-18 x 3-31132" 35554 35499 35540 36205 29443 35392 35880 34259 34258A 30063 35274 35703 640112 590746 36450B 34479A Oil Fill Tube O Ring Fill Tube Clip Dipstick Wire Clip Starter Plug Spacer Fuel Tank Bracket Fuel Tank Bracket Screw, Torx T-30, 1/4-20 x 1/2" Oil instruction Decal Throttle Decal Carburetor (Incl. 184) Rewind Starter Gasket Set Spark arrester Kit Replacement Engine none Replacement SB 756321, Order 71-999 23
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247.775880 Carburetor Key Part Description No. No. 640112 1 631776A 2 631970 4 631184 ,._ 5 631183 11 6 64O109 _12 7 650506 i 10 632740 "15 13 11 632043 // 12 631184 13 631183 14 631753 15 630735 16 632164 17 651025 18 630766 20 640027 20A 64O053 25 631867 27 631024 28 632019 29 631028 30 631021 31 631022 36 640113 37 632547 40 640114 44 27110 47 630748 48 631027 Carburetor (Incl. 184 of Engine Parts List) Throttle Shaft & Lever Assembly Throttle Return Spring Dust Seal Washer Dust Seal (Throttle) Throttle Shutter Shutter Screw Choke Shaft &Lever Assembly Choke Return Spring Dust Seal Washer Dust Seal (Choke) Choke Shutter Choke Positioning Spring Fuel Fitting Throttle Crack Screw/Idle Speed Screw Tension Spring Idle Mixture Screw Idle Restrictor Screw Float Bowl Float Shaft Float Float Bowl "O"-Ring Inlet Needle, Seat & Clip (Incl. 31) Spring Clip Main Nozzle Tube O Ring, Main Nozzle Tube High Speed Bowl Nut Bowl Nut Washer Welch Plug, Idle Mixture Well Welch Plug, Atmospheric Vent 24
SEARS CRAFTSMAN 8.5 H.P. ENGINE MODEL 143.988503 FOR CHIPPER-SHREDDER MODEL 247.775880 Recoil Starter 590746 13 12 "8 6_'_6 ¢p-.4 Key Part Description No. No. 590746 1 590599A 2 590600 3 590679 4 590601 5 590678 6 590680 7 590412 8 590681 11 590747 12 590535 13 590701 Recoil Starter Spring Pin (Incl. 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spring Pulley & Rewind Spring Ass'y Starter Housing Ass'y Starter Rope (98" x 9/64" Dia,) Starter Handle 25
For the repair or replacement parts you need delivered directly to your home Call 7 am - 7 pm, 7 days a week 1-800-366-PART (1-800-366-7278) For in-home major brand repair service Call 24 hours a day, 7 days a week 1-8OO-4-REPAIR (1-800-473-7247) For the location of a Sears Parts and Repair Center in your area Call 24 hours a day, 7 days a week 1-800-488-1222 NN mm mmm mmm mmm mmmm For information on purchasing a Sears Maintenance Agreement or to inquire about an existing Agreement call 9 am - 5 pm, Monday-Saturday 1-800-827-6655 SEARS America's Repair Specialists