Craftsman 247.795861 Owner's Manual
OWNER'S MANUAL MODEL NOS° 247.795860 247=795861 Caution: Read and Follow All Safety Rules and Instructions Before Operating This Equipment 8 HORSEPOWER 3 CUTTING STAGE MULCHING AND BAGGING CHIPPER=SHREDDER Assembly Operation Customer Responsibilities Service and Adjustment Repair Parts SEARS, ROEBUCK AND CO., Hoffman Estates, IL 60195 U.S.A. Printed in U.S.A. 770_8175H 9/92
SAFETY RULES l_ PERSONAL INJURY, WARNING: TO REDUCE THE POTENTIAL FOR ANY INJURY, COMPLY WITH THE FOLLOWING SAFETY INSTRUCTIONS. FAILURE TO COMPLY WITH THE INSTRUCTIONS MAY RESULT IN TRAINING e Read this owner's manual carefully in its entirety before attempting to assemble or operate this machine Be com- pletely familiar with the controls and the proper use of this machine before operating it Keep this manual in a safe place for future and regular reference and for ordering replacement parts e Children must never be allowed to operate this equipment e No one should operate this unit while intoxicated or while taking medication that impairs the senses or reactions e This equipment should never be operated in the vicinity of children, pets or other persons ® Never run your machine in an enclosed area as the exi_aust from the engine contains carbon monoxide, which is an odorless, tasteless and deadly poisonous gas e Never place your hands or any part of your body or cloth- ing inside the feeding chamber, discharge chute, or near any moving part while the machine or engine is running. e If it is necessary for any reason to inspect or repair the feeding chamber or any part of the machine where a mov- ing 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 such inspection or repair PREPARATION e Wear safety glasses provided with your unit while operat- ing the chipper-shredder to prevent injury from any mate- rial which may be ejected out of the openings. e Wear proper apparel Avoid wearing loose fitting clothing Wear gloves when handling material e HANDLE GASOLINE WITH CARE as it is an extremely flammable fuel o Check the fuel before starting the engine Do not fill the fuel tank indoors, while the engine is running, or while the engine is still hot Turn the unit off and let the engine cool before refueling o Fuel your chipper-shredder in a clean area Do not smoke while refueling ⢠Fuel tank cap must be secure at all times except dudng refueling ® Avoid spilling gasoline or oil Wipe the unit clean of any spilled fuel or oil. ® Store fuel and oil in approved containers, away from heat or open flame, and out of reach of children ⢠This machine should be operated only upon a level surface ® Assure that all screws, nuts and bolts and other fasteners are properly secured OPERATION ® When feeding shreddable 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 o if the cutting mechanism strikes any foreign object or your machine should start making an unusual noise or vibration, immediately stop the engine, disconnect the spark plug wire from the spark plug and move it away from the spark plug Allow the machine to stop and take the following steps: Inspect for damage Replace or repair any damaged parts Check for any loose parts and tighten to assure contin- ued safe operation e The engine must be kept clean of debris and other accu- mulations. e 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 feed opening e Never place your hands or any other part of your body or clothing inside the feeding chamber, discharge chute or near any moving part while the engine is running e Keep all guards and deflectors in place and in good work- ing condition to assure continued safe operation e Always stand clear of the discharge area when opelating this machine e Keep your face and body back from the feed opening to avoid accidental bounce back of any material. ® Do not over-reach Keep proper balance and footing at all times e The engine governor settings on your machine must not be altered, changed, or tampered with The governor contrels the maximum safe operating speeds and pro- tects the engine and all moving parts from damage caused by overspeed. e Do not transport machine while engine is running e Do not operate engine if air cleaner or cover directly over carburetor air intake is removed, except for adjustment. Removal of such parts could create a fire hazard MAINTENANCE AND STORAGE o When this equipment is stopped for servicing, inspection, storage or to change an accessory, make sure the spark plug wire is disconnected from the spark plug and moved away from the spark plug The machine should be allowed to cool down before making such inspection, adjustments, service, etc Maintain your machine with care and keep it clean for the best and continued safe operation o De not use flammable solutions to clean the air filter O When not in use, your machine should be stored out of the reach of children. Keep where gasoline fumes will not reach an open flame or spark For long periods of stor- age, refer to the "Storage" section of this manual. I LOOK FOR THIS SYMBOL TO POINT OUT] IMPORTANT SAFETY PRECAUTIONS. ITI MEANS--ATTENTION!!! BECOME ALERT!!! YOUR SAFETY S NVOLVED. / J 2
CC'NGRATULATIONS on your purchase of a Sears Crattsman Chipper-Shredder It has been designed, engi- neered and manufactured to give you the best possible dependability and performance, Should you experience any problem you cannot easily rem- edy, please contact your nearest Sears Service Center/ Department in the United States, We have competent, well- trained technicians and the proper tools to service or repair this unit Please read and retain this manual The instructions will enable you to assemble and maintain your chipper-shredder properly Always observe the "SAFETY RULES" MODEL NUMBER SERIAL NUMBER DATE OF PURCHASE THE MODEL AND SERIAL NUMBERS WILL BE FOUND ON A LABEL ATTACHED TO THE FRAME OF THE CHIPPER-SHREDDER YOU SHOULD RECORD BOTH SERIAL NUMBER AND DATE OF PURCHASE AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE CUSTOMER RESPONSIBILITIES e Read and observe the safety rules, e Follow a regular schedule in maintaining, caring for and using your chipper-shredder, ® Follow the instructions under "Customer Respons- ibilities" and "Storage" sections of this Owner's Manual PRODUCT SPECnFICATIONS Horsepower: &0 Displacement: 19,44 cu in Fuel Capacity: 1 Gallon (Unleaded) Spark Plug (Gap 030 in.): Champion J19LM (or Equivalent) Magnetron ® Ignition Air Gap: ,0125 in MAINTENANCE AGREEMENT A Sears Maintenance Agreement is available on this product Contact your nearest Sears store for details WARNING: This unit is equipped with an internal combus- tion engine and should not be used on or near any unim- proved 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 effec- tive 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 availabte through your nearest Sears Authorized Service Center (See the REPAIR PARTS section of this manual) WARRANTY ONE YEAR LIMITED WARRANTY OH CRAFTSMAN GAS CHIPPER-SHREDDER For one year from the date of purchase, when this Craftsman Chipper-Shredder is maintained, lubricated and tuned up according to the instructions in the owner's manual, Sears will repair, free of charge, any defect in material and workmanship If this Craftsman Chipper-Shredder is used for commercial or rental purposes, this warranty applies for only 30 days from the date of purchase. This warranty does not cover: ® Expendable items which become worn during normal use, such as blades, chipper blades, flails, air cleaners, spark plugs and catcher bags e Repairs necessary because of operator abuse or negligence, including bent crankshafts and the failure to maintain the equipment according to the instructions contained in the owner's manual, WARRANTY SERVICE IS AVAILABLE BY RETURNING THE CRAFTSMAN CHIPPER-SHREDDER TO THE NEAREST SEARS SERVICE CENTER/DEPARTMENT 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 may vary from state to state. SEARS, ROEBUCK AND CO. D/817WA, Hoffman Estates, IL 60195
TABLE OF CONTENTS ' SAFETY RULES ....................................................................... 2 PRODUCT SPECIFICATIONS ..................................... 3 WARRANTY ......................................................................................... 3 INDEX ......................................................................................... 4 ASSEMBLY .................................................................... 5-7 OPERATION ..................................................................... 7-10 CUSTOMER RESPONSIBILITIES .......................... 11, 12 STORAGE ............................................................................. 13 SERVICE AND ADJUSTMENT .............................. 13-15 TROUBLE SHOOTING ........................................................... 16 PARTS ORDERING/SERVICE ...................................... 16 REPAIR PARTS--CHIPPER-SHREDDER ........ 17, 18 REPAIR PARTS--ENGINE ...................................... 19-23 HNDEX A Adjustments: Carburetor ................................................................................. 15 Engine Speed ................................................................... 15 Assembly Instructions: Catcher Bag ............................................................................. 6 Chute Crank Deflector ............................................................ 6 Hopper Assembly ....................................................... 6 Catcher Bag ....................................................... 6, 7 C Catcher Bag ................................................................... 6, 7 Controls .......................................................................... 7 Customer Responsibilities ................................ 3, 11,12 E Engine: Maintenance ................................................... 11, 12 Starting .............................................................................. 10 Stopping ................................................................................. 8 Storage ................................................................................... 13 F Fuel ...................................................................................................... 9 L Lubrication ............................................................... 11 M Maintenance: Agreement ....................................................................................... 3 Schedule ......................................................... 11 Engine ....................................................................... 11, 12 Chipper-Shredder ......................................................................... 11 O Oil .............................................................................................. 9 Operating Tips ................................................................................. 8 R Repair/Replacement Parts ......................................... 17-23 Responsibilities, Customer ..................................... 3, 11-13 S Safety Rules .................................................................... 2 Sharpening ..................................................................... 14, 15 Service Recommendations .............................................. 11 Spark Plug ....................................................................... 12 Specifications ...................................................................... 3 Storage ...................................................................................... 13 T Table of Contents .............................................................. 4 Trouble Shooting ............................................................... 16 U Unclogging ............................................................... 13, 14 Unpacking ...................................................................................... 5 W Warranty .......................................................................... 3 4
£ ASSEMBLY mNSTRUCTmONS IMPORTANT: This unit is shipped WITHOUT GASO_ LINE or OIL After assembly, see operation section of this manual for proper fuel and engine oil recommen- dation& NOTE: To determine right and left hand sides of your ...Fla.t-"_/'-,f'_'_ chipper-shredder, stand behind and face the hopper 5_l_Sl]el_ k_,,,.._) (engine is at the front of the unit) ⢠_ _ Your chipper-shredder has been completely assem- I II bled at the factory, except for the hopper assembly I I_ (hopper hood and upper leaf ramp section have been I II sub-assembled), upper guide assembly, chute deflec- ! ]_ tor and the catcher bag The hardware pack and safe- I tl ._ ty glasses are also included in the carton I] [/_._'_]-<'-Hex Lock The hardware pack contains the parts shown in figure II [l_..)))1 Nut 5/16-18 1 (shown full size) 1 _ Thread b il TO REMOVE CHIPPER-SHREDDER FROM CARTON I !l Cut the corners of the carton Remove all packing I II ..... inserts Roll chipper-shredder out of the carton Make I 11----5110-1_e'.-%1°. :' Loog certain all parts and literature have been removed I !J before the carton is discarded I II TOOLS REQUIRED FOR ASSEMBLY I II (1) Phillips Screwdriver I II (2) 1/2"or Adjustable Wrenches I / (2) 7/16 or Adjustable Wrenches I i I__ M [] [] I_- TrusoM°chi°eScrews I L .e LockNu,a FIGURE 1.
Spacers Hinge) Housing Assembly Hex Lock- Nut Hand Chute Deflector FIGURE 2. Stop Washer Upper Guide Release Assembly Bar Frame FIGURE 3. Hopper Pivot Door ASSEMBLE THIS TRUSS SCREW AND NUT FIRST Bar 8-3/8" Long Flat Washer Hex Lock Nut Hopl: Assembly Jper Guide Assembly pper Leaf Ramp Section Remove Truss Screw and Nut FIGURE 4. , Drawstring ./ 'Plunger FIGURE 5. HOW TO SET-UP YOUR CHIPPER-SHREDCER MAKE CERTAIN THE SPARK PLUG WIRE IS DISCONNECTED AND MOVED AWAY FROM THE SPARK PLUG BEFORE ASSEMBLING THE CHIPPER- SHREDDER. _-A'I-rACHING THE CHUTE DEFLECTOR e Remove the hand knobs and cupped washers from each side of the discharge opening on the left side of the chipper-shredder e Remove hex lock nut, two spacers and hex bolt from inside the hinge on top of the housing assem- bly Do not remove one spacer from the hex bolt e Place the chute deflector in position on the dis- charge opening Insert hex bolt and spacer through hinge on chute deflector and housing (spacer fits inside of hinge). See figure 2. ® Place second spacer over hex bolt, inside other part of hinge. Secure with hex lock nuL Tighten securely. e Secure both sides of chute deflector to housing using hand knobs and cupped washers (cupped side of washers go against chute deflector) -<-ATTACHING THE UPPER GUIDE ASSEMBLY Place upper guide assembly in position on frame, making certain edges of the upper guide assembly are underneath stop washers, and the release bar is in the slots= See figure 3 Insert hex bolt 8-3/8" long through upper guide assembly and frame Secure with flat washer and hex lock nuL NOTE: Make certain upper guide assembly can pivot by pulling up on release bar and lowering upper guide assembly If necessary, loosen hex lock nut a turn or two Put the upper guide assembly back into the raised position, "_-ATTACHING THE HOPPER ASSEMBLY Your chipper-shredder has been shipped with the upper leaf ramp section attached to the hopper assembly See figure 4 Attach the hopper assembly to the upper guide assembly as follows. Be certain to place heads of all truss machine screws inside of hopper assembly_ ⢠Remove one truss machine screw and nut from each side of hopper assembly as shown in figure 4. Push hopper pivot door down inside lower part of hopper as you place hopper assembly (both pieces) inside upper guide assembly_ Replace truss screws and nuts just removed, using the hole shown in figure 4, one on each side Tighten finger tight only e Place the six truss machine screws and nuts found in hardware pack in the remaining holes of hopper assembly, alternating sides of the unit and tighten- ing finger tight only ⢠After assembling all eight screws, tighten them securely <-ATTACHING THE CATCHER BAG Your chipper-shredder is equipped with a catcher bag to catch the shredded material 6
e To attach the bag, place the opening of the bag over the chute deflector so it completely covers the chute opening. Depress the plunger on the draw- string, and pull on the drawstring until the bag is tight around the chute opening. Release plunger to lock it into position See figure 5, OPERATnON KNOW YOUR CHIPPER-SHREDDER READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR CHIPPER-SHREDDER_ Compare the illustrations with your chipper-shredder to familiarize yourself with the location of various controls and adjustments Save this manual for future reference Engine Switch Choke Lever. Starter Handle Hopper Assembl Chipper Chute Oil Fill Dipstic Fuel Tank Chute Deflector Release Bar Bag FIGURE 6--Model 247.795861 Shown. MEETS ANSI SAFETY STANDARDS Sears chipper-shredders conform to the safety standard B71 6-1982 of the American National Standards Institute OPERATING CONTROLS (See figure 6) 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, ENGINE SHUT-OFF SWITCH--Used to stop the engine. FUEL SHUT-OFF VALVE--Used to stop the flow of fuel into the carburetor (located beneath the fuel tank) BEFORE USING YOUR CHIPPER-SHREDDER, AGAIN REFER TO THE "SAFETY RULES" AS SHOWN ON PAGE 2 OF THIS MANUAL ALWAYS BE CAREFUL, The operation of any chipper-shredder can result in foreign objects being thrown into the eyes, which can result in severe eye damage Always wear the safety glasses pro- vided with the chipper-shredder or eye shields before chipping or shredding, or while performing any adjustments or repairs. We recommend Wide Vision Safety Mask for over spectacles or standard glasses available at Sears Retail or Catalog Stores
TO STOP ENGINE ⢠Move engine shut-off switch to OFF position See figure 6 ⢠Disconnect spark plug wire and move away from spark plug to prevent accidental starting while equipment is unattended. e Close fuel shut-off valve when equipment is not in use to prevent fuel leakage. Hopper Assembly No Larger Than 1/2" Diameter Recommended) (Maximum) \ HOW TO USE YOUR CHIPPER-SHREDDER Do not attempt to shred or chip any material other than vegetation found in a normal yard (i..e, branches, leaves, twigs, etc.) WARNING: THE CHIPPER-SHREDDER DISCHARGES MATERIALS WITH CON- SIDERABLE VELOCITY, KEEP AWAY FROM THE AREA AROUND THE CHUTE DEFLECTOR, ALWAYS STOP THE ENGINE AND DISCONNECT THE SPARK PLUG WIRE WHEN REMOVING OR A'I-rACHING THE BAG WHEN CHANGING CONTAINERS OR WHEN REMOVING THE SHREDDED MATERIAL. WEAR SAFETY GLASSES AND GLOVES WHENEVER USING YOUR CHIPPER-SHREDDER. The chipper-shredder is designed for three different methods of operation. e Leaves and small branches up to 1/2" diameter (recommended) or 1" diameter (maximum) can be fed into the hopper' assembly when it is in the raised position. See figure 7 If it becomes neces- sary to push material into the chipper-shredder, use a small diameter stick--NOT YOUR HANDS. The stick should be small enough that it will be ground up if gets into the impeller assembly WARNING: DO NOT PUT MATERIAL LARGER THAN 1/2" IN DIAMETER (REC- OMMENDED) or 1" DIAMETER (MAXI- MUM) INTO THE HOPPER ASSEMBLY. MATERIAL UP TO A MAXIMUM OF 3" IN DIAMETER MATERIAL MAY BE FED INTO THE CHIPPER CHUTE. DO NOT ATTEMPT TO SHRED OR CHIP ANY MATERIAL LARGER THAN 3" IN DIAME- TERo PERSONAL INJURY OR DAMAGE 1"O THE MACHINE COULD RESULT. FIGURE 7. ® Leaves and small twigs can be raked into the hop- per assembly when the hopper assembly is low- ered to the ground. See figure 8 Small branches up to 1/2" diameter (recommended) or 1" diam- eter (maximum) can also be fed into the hopper assembly in this position See figure 9 \ FIGURE 8. No Larger Than 1/2" Diameter (Recommended) Or 1" Diameter (Maximum) FIGURE 9.
® To lower the hopper assembly, use one hand to grasp the handle at the top of the hopper assembly and lift slightly Pull up on the release bar, and lower the hopper assembly to the ground Release the bar_ See figure 10 Hopper 5/ Release Bar FIGURE 10. e Bulky material, such as stalks or heavy branches, up to 3" in diameter, should be fed into the chipper chute See figure 11 WARNING: MAKE CERTAIN THE CHIP- PER CHUTE DOOR IS CLOSED WHEN NOT IN USE. 3" Maximum ipper Chute Oil Drair FIGURE 11. 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_ For best per- formance, it is important to keep the shredding blade and the chipper blades sharp If the composition of the material being discharged changes (becomes stringy, etc) or if the rate at which the material is dis- charged 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. GAS AND OIL FiLL-UP OIL Only use high quality detergent oil rated with API ser- vice classification SG Select the oil's viscosity grade according to your expected operating temperature. Colder <_ 32°F _ Warmer 5W30 _ SAE 30 NOTE: Although multFviscosity oils (5W30, 10W30, etc.) improve starting in cold weather, these multi- viscosity oils will result in increased oil consumption when used above 32°F. Check your oil level more fie- quently to avoid possible engine damage from run- ning low on oil e Fill engine with oil as follows. Remove oil fill dip- stick See figure 12 With chipper-shredder level, use a funnel to fill engine with oil to FULL mark on dipstick. Capacity is approximately 2-3/4 pints. Be careful not to overfill. Tilt chipper-shredder toward the left (from behind the hopper), then re-level. Check oil level Refill to FULL mark on dipstick if necessary. Replace dipstick and tighten. 9 Oil Fill Dipstick Oil Dipstick \ Model 247.795860 Model 247,795861 FIGURE 12, GAS e Remove fuel cap and fill fuel tank with about 1 gal- lon of clean, fresh, lead-free grade automotive gasoline DO NOT use Ethyl or high octane gaso* line. Be certain container is clean and free from rust or foreign particles Never use gasoline that may be stale from long periods of storage in the container 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" in SERVICE AND ADJUSTMENT section WARNING: EXPERIENCE INDICATES THAT ALCO- HOL 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 OR TREATED WITH FUEL STABILIZER BEFORE STORAGE FOR 30 DAYS OR LONGER. USE FRESH FUEL NEXT SEASON. SEE "STORAGE" SECTION FOR ADDITIONAL INFORMATION. NEVER USE ENGINE OR CARBURETOR CLEAN- ER PRODUCTS IN THE FUEL TANK OR PERMA- NENT DAMAGE MAY OCCUR. Spark Plug, Wire and Boot Muffler Starter Handle \4 \\ FIGURE 13. ® Attach spark plug wire and rubber boot to spark plug if necessary. See figure 13. e Open fuel shut-oft valve by turning in direction of arrow several turns. See figure 14 ® Move choke lever down to CHOKE position e Place the engine shut*off switch in ON position See figure 14 ® Grasp starter handle (see figure 13) and pull rope out slowly until engine reaches start of compres- sion cycle (rope will pull slightly harder at this point) Let the rope rewind slowly 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 mech- anism falling into place, and should be expected In addition, the flails and finger's will be noisy after the engine is started, until the impeller reaches full speed e Pull rope with a rapid, continuous, full arm stroke Keep a firm grip on start handle Let rope rewind slowly. Do not let starter handle snap back against starter e Repeat preceding two instructions until engine fires. When engine starts, move choke lever on engine halfway between CHOKE and RUN. NOTE: If engine does not fire after three attempts, move choke lever halfway between CHOKE and RUN position and try again. See figure 14. Fuel Shut=Off Valve To ."°o Choke "" " Choke Lever Engine Shut-Off Switch FIGURE 14. TO START ENGINE _ WARNING: BE SURE NO ONE OTHER THAN THE OPERATOR iS STANDING NEAR THE CHIPPER-SHREDDER WHILE STARTING OR OPERATING. DO NOT OPERATE THIS CHIPPER-SHREDDER UNLESS THE CHUTE DEFLECTOR HAS BEEN PROPERLY INSTALLED AND IS SECURED WITH THE HAND KNOBS. 10 TO STOP ENGINE e Move engine shut-oft switch to OFF position See figure 14. ® Disconnect spark plug wire and move away from spark plug to prevent accidental starting while equipment is unattended ® Close fuel shut-off valve when equipment is not in use to prevent fuel leakage.
CUSTOMER RESPONSDBnLITIES MAINTENANCE SCHEDULE ,/___//_O_/ FILL IN DATES /_ ,/ _/ _ / ,_/a,,o_/^_,co/ .s REGULAR SERVICE ! / / / SERVICE ....... DATES F- Oil Pivot Points _/ O Clean Shredder q _1 rt Check Engine Oil _/ Change Engine Oil _] _/ Service Air Cleaner _/ z Clean Engine Cylinder _/ _/ Spark Plug "4 _/ Muffler _/ _/ CHECK GENERAL RECOMMENDATIONS WARNING: ALWAYS STOP THE ENGINE AND DISCONNECT THE SPARK PLUG WIRE BEFORE PERFORMING ANY MAINTENANCE OR ADJUSTMENTS. e Periodically check all fasteners and be sure they are tighL e Follow the Maintenance Schedule above CHIPPER-SHREDDER LLIBRICATION Lubricate the pivot paints on the release bar, hopper assembly, chute deflector and chipper chute once a season using a light oil ENGINE ENGINE OIL Only use high quality detergent oil rated with API ser- vice classification SG Select the oil's viscosity grade according to your expected operating temperature Colder -._ 32°F " Warmer 5W30 M SAE 30 NOTE: Although multi-viscosity oils (SE30, 10W30, etc ) improve starting in cold weather, these multi- vis- cosity oils will result in increased oil consumption when used above 32°F Check your oil level more fre- quently to avoid possible engine damage from run- ning low on oil Your four-cycle engine will normally consume some oil--therefore, check engine oil level regularly approx- imately every five hours of operation and before each usage Stop engine and wait several minutes before checking oil level. With engine level, the oil must be to FULL mark on dipstick (refer to figure 12). Change engine oil after the first five hours of operation, and every twenty-five hours thereafter. 11 To Drain Oil: e Drain oil while engine is warm a_ Remove oil drain plug Refer to figure 11. Catch oil in a suitable container b When engine is drained of all oil, replace drain plug securely. ® Refill with fresh oil Refer to GAS AND OIL FILL- UP section, e 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 per- formance Never run your engine without air cleaner com- pletely assembled. To Service Air' Cleaner: Service pre-cleaner after every 25 hours of use, or at least once a season. Service cartridge every 100 hours of use, or at least once a season. Service pre- cleaner and cartridge more often under dusty condi- tions. e Remove wing nut and cover To service foam pre-cleaner: Remove pre-cleaner by sliding it off the cartridge Wash in liquid deter- gent and water. Squeeze dry in a clean cloth Saturate in engine oil. Squeeze in a clean, absorbent cloth to remove all excess oil If pre- cleaner is very dirty, replace it.. @ To service cartridge: Remove cartridge by remov- ing wing nut and lifting off cup and cartridge Clean by tapping gently on a flat surface. If very dirty, replace.. Do not oil cartridge NOTE: Do not use petroleum solvents leg. kerosene) or pressurized air to clean cartridge They will cause cartridge to deteriorate. ⢠Reinstall cartridge, cup, pre-cleaner and cover'. ⢠Fasten wing nuts securely. Foam =re-Cleaner Wing Nut 'Cup CLEAN ENGINE '. Clean engine periodically_ Remove dirt and debhs with a cloth or brush. Cleaning with a forceful spray of water is not recommended as water could contami- nate the fuel system Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in figure 17 to avoid overspeeding, overheating and engine damage. Clean more often if necessary. WARNING: PERIODICALLY CLEAN MUF- FLER AREA TO REMOVE ALL GRASS, DIRT AND COMBUSTIBLE DEBRIS. LEANING The chipper-shredder may be cleaned by running water from a hose through the hopper assembly and chipper chute with the engine running. Allow the chipper-shredder to dry thoroughly. e Wash the bag periodically with water. Allow to dry thoroughly in the shade. Do not use heat. /I_[-_'F]I_-_ .._r_ _ CleanOut cha. and FIGURE 17. SPARK PLUG The spark plug should be cleaned and the gap reset to .030" at least once a season or' every 50 hours of operation. See figure 18. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type. NOTE: Do not sandblast spark plug Spark plug should be cleaned by scraping or wire brushing and washing with a commercial solvent.. .030" Feeler Gau FIGURE 15. FUEL FILTER Your engine is equipped with a replaceable in-line fuel filter. Replace the fuel filter every season. See figure 16 Refer to engine parts list for' correct replacement filter, FIGURE 16. 12 Plug FIGURE 18. MUFFLER 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.
STORAGE ® Drain the fuel tank 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. 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 AND SPACE HEATERS, FURNACES, CLOTHES DRYERS, STOVES, ELECTRIC MOTORS, ETC. NOTE: 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 e 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 SEPARA- TION AND FORMATION OF ACIDS DURING STOR- AGE. ACIDIC GAS CAN DAMAGE THE FUEL SYS- TEM OF AN ENGINE WHILE IN STORAGE ® Start the engine and let it run until the fuel lines and carburetor are empty e Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur e 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 stor- age 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 carbure- tor if using fuel stabilizer e 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 table- spoon) of engine oil into cylinder and crank slowly to distribute oil. Replace spark plug. OTHER e 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 e Store unit in a clean, dry area Do not store next to corrosive materials, such as fertilizer NOTE: If storing in an unventilated or metal storage shed, be certain to rustproof the equipment by coating with a light oil or silicone. SERVRCE & ADJUSTMENT O WARNING: ALWAYS STOP ENGINE AND DISCONNECT SPARK PLUG WIRE AND MOVE IT AWAY FROM SPARK PLUG BEFORE PERFORMING ANY ADJUST T MENTS OR REPAIRS. REMOVING THE FLAIL SCREEN If the discharge area becomes clogged, remove the flail screen and clean area as follows e Stop the 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 O Q Loosen the two hand knobs on each side of the chute deflector. Lift the chute deflector up, and tie it out of the way. Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins Lift the flail screen from inside the housing. See figure 19_ Clean the screen by scraping or washing with water. Reinstall the screen NOTE: Be certain to reassemble the flail screen with the curved side clown as shown in figure 19. 13
Chute Deflector. Hairpin _ Clips, Clevis Pins --_Hex Nuts Washers Screen Chipper Chute FIGURE 19. Hand Knobs SHARPENING OR REPLACING THE BLADES CHIPPER BLADES ® Disconnect spark plug wire and move it away from spark plug e Remove the flail screen as instructed in previous section e Remove the chipper chute by removing three hex nuts and washers. A 1/2" wrench is required_ See figure 19. NOTE: When reassembling, the cupped washer goes on the bottom of the chipper chute with the cupped side against the chute. e Rotate the impeller assembly by hand until you locate one of the 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 hous- ing). See figure 20_ ⢠Remove the other blade in the same manner FIGURE 20. Replace or sharpen blades If sharpening, make ogr- tain 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 19 (sharp edge is assembled toward the slotted opening in the impeller assembly). SHREDDING BLADE The shredding blade may be removed for sharpening or replacement as follows. e Disconnect spark plug wire and move it away from spark plug_ e Lower the hopper assembly Block up the housing_ See figure 21. e 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 e Remove the back-up plate. NOTE: When reassembling, make certain the open- ing on the back-up plate is toward the bottom of the uniL The back-up plate may be reversed to provide a new cutting edge. Allen Screws 14 Torque Wrench FIGURE 21. e Loosen the two hand knobs and cupped washers which secure the chute deflector, and raise the chute deflector e 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. e Remove the two outside screws on the blade, using a 3/16" allen wrench and a 1/2" wrench. e Remove the blade by removing the center bolt, lock washer and flat washer.
NGTE: Use caution when removing the blade to avoid contacting the weld bolts on the housing_ e When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. An unbal- anced blade will cause excessive vibration when rotating at high speeds and may cause damage to the unit e The blade can be tested for balance by balancing it on a round shaft screwdriver or nail. Remove metal from the heavy side until it is balanced evenly. See figure 22_ Nail_\ _ / \ FIGURE 22. e When reassembling the blade, tighten to between 550 and 650 inch pounds, or lacking torque wrench, tighten securely FLAILS The flails, located inside the housing, may be reversed when they become dull It is suggested that this procedure be performed by your nearest Sears Service Department CARBURETOR ADJUSTMENT WARNING: IF ANY ADJUSTMENTS ARE MADE TO THE ENGINE WHILE THE ENGINE IS RUNNING (E.G. CARBURE- TOR)p KEEP CLEAR OF ALL MOVING PARTS. BE CAREFUL OF HEATED SUR- FACES AND MUFFLER. Minor carburetor adjustment may be required to com- pensate for differences in fuel, temperature, altitude or load NOTE: A DIRTY AIR CLEANER WILL CAUSE ENGINE TO RUN ROUGH. BE CERTAIN AIR CLEANER IS CLEAN AND ATTACHED TO THE CARBURETOR BEFORE ADJUSTING CARBURE- TOR. DO NOT MAKE UNNECESSARY ADJUST- MENTS FACTORY SETTINGS ARE SATISFACTO- RY FOR MOST APPLICATIONS AND CONDITIONS Never attempt to change maximum engine speed It is pre-set at the factory and should be changed only by a qualified service technician who has the necessary equipment The carburetor may need re-adjusting if engine lacks power or does not idle properly If adjustments are needed, proceed as follows e Close needle valve (see figure 23) clockwise ((_) finger tight only. Forcing may cause damage. Then open 1-1/2 turns counterclockwise ( ,'_ ) ® Start engine and allow to warm for five minutes e Close needle valve clockwise (,'-_) until engine starts to lose speed (lean mixture). Then slowly open needle valve counterclockwise (,'_) until engine JUST BEGINS to run unevenly. This mix- ture should be rich enough for best performance under load O Rotate throttle counterclockwise (,'_) and hold against throttle stop. If engine idles, no further adjustment is necessary. If engine idles too fast, turn idle speed adjusting screw counterclockwise (_) until slower speed is obtained. O If engine dies, turn idle speed adjusting screw 1/4 turn clockwise (_) Place throttle control in FAST position and restart engine. Move throttle control to IDLE position. If engine does not idle, repeat third step Test the engine by using the chipper-shredder If engine tends to stall or die out, it usually indicates that the mixture is slightly lean and it may be nec- essary to open ("_) the needle valve slightly to provide a richer mixture This richer mixture may cause a slight unevenness in idling. Idle Speed Adjust _g Screw Throttle Idle Mixture FIGURE 23. Needle Valve (High Speed) 15 ENGINE SPEED Your engine speed has been factory set 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 adjust- ment
TROUBLE SHOOTING CORRECTIVE ACTION PROBLEM POSSIBLE CAUSE(S) Engine fails to start e Fuel shut-off valve closed. e Fuel tank empty, or stale fuel. e Spark plug wire disconnected e Faulty spark plug. Loss of power; e Spark plug wire loose. operation erratic ⢠Unit running on CHOKE e Blocked fuel line or stale fuel. e Water or dirt in fuel system e Carburetor out of adjustment e Open fuel shut-off valve e Fill tank with clean, fresi_ fuel e Connect wire to spark plug ⢠Clean, adjust gap or replace. e Connect and tighten spark plug wire ⢠Move choke lever to OFF position e Clean fuel line; fill tank with clean fresh gasoline e Disconnect fuel line at carburetor to drain fuel tank Refill with fresh fuel e Adjust carburetor or contact your SEARS Service Center ⢠Service air cleaner See Customer Responsibilitie. _ section of this manual. ⢠Dirty air cleaner, Engine overheats ⢠Carburetor not adjusted ⢠Contact your SEARS Service Center properly ⢠Engine oil level low. ⢠Fill crankcase with proper oil. Too much vibration e Loose parts or damaged ⢠Stop engine immediately and disconnect impeller, spark plug wire Tighten all bolts and nuts. Make all necessary repair& If vibration continues. have unit serviced by a SEARS Service Center. Unit does not ⢠Discharge chute clogged e Stop engine immediately and disconnect discharge spark plug wire. Clean flail screen and inside of blower housing See Service/Adjustments section of this manuel. e Foreign object lodged in impeller e Stop engine immediately and disconnect spark plug wire. Remove lodged object. Rate of discharge e Shredding blade and/or chipper ⢠Sharpen or replace shredding and chipper slows considerably or blades dull blades composition of discharged material changes NOTE: For repairs beyond the minor adjustments listed above, please contact your nearest SEARS Service Center. HOW TO ORDER REPLACEMENT PARTS Each chipper-shredder has its own model number. Each engine has its own model number. The model number for your chipper-shredder will be found on a label attached to the frame The model number for the engine will be found on tile blower housing of the engine All parts listed herein may be ordered through Sears, Roebuck and Co. Service Centers and most Retail Stores WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: *PRODUCT - "8 H.P. Chipper-Shredder" *MODEL NUMBER - 247.795860 247,795861 *ENGINE MODEL NO. - 190412-6143-01 190432-6117-01 *PART NUMBER *PART DESCRIPTION Your Sears merchandise has added value when you consider that Sears has service units nationwide staffed with Sears trained technicians professional technicians specifically trained on Sears prodects, having the parts, tools and the equipment to insure that we meet our pledge to you../'we service what we sell/' 16
SAFETY RULES l_ PERSONAL INJURY, WARNING: TO REDUCE THE POTENTIAL FOR ANY INJURY, COMPLY WITH THE FOLLOWING SAFETY INSTRUCTIONS. FAILURE TO COMPLY WITH THE INSTRUCTIONS MAY RESULT IN TRAINING e Read this owner's manual carefully in its entirety before attempting to assemble or operate this machine Be com- pletely familiar with the controls and the proper use of this machine before operating it Keep this manual in a safe place for future and regular reference and for ordering replacement parts e Children must never be allowed to operate this equipment e No one should operate this unit while intoxicated or while taking medication that impairs the senses or reactions e This equipment should never be operated in the vicinity of children, pets or other persons ® Never run your machine in an enclosed area as the exi_aust from the engine contains carbon monoxide, which is an odorless, tasteless and deadly poisonous gas e Never place your hands or any part of your body or cloth- ing inside the feeding chamber, discharge chute, or near any moving part while the machine or engine is running. e If it is necessary for any reason to inspect or repair the feeding chamber or any part of the machine where a mov- ing 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 such inspection or repair PREPARATION e Wear safety glasses provided with your unit while operat- ing the chipper-shredder to prevent injury from any mate- rial which may be ejected out of the openings. e Wear proper apparel Avoid wearing loose fitting clothing Wear gloves when handling material e HANDLE GASOLINE WITH CARE as it is an extremely flammable fuel o Check the fuel before starting the engine Do not fill the fuel tank indoors, while the engine is running, or while the engine is still hot Turn the unit off and let the engine cool before refueling o Fuel your chipper-shredder in a clean area Do not smoke while refueling ⢠Fuel tank cap must be secure at all times except dudng refueling ® Avoid spilling gasoline or oil Wipe the unit clean of any spilled fuel or oil. ® Store fuel and oil in approved containers, away from heat or open flame, and out of reach of children ⢠This machine should be operated only upon a level surface ® Assure that all screws, nuts and bolts and other fasteners are properly secured OPERATION ® When feeding shreddable 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 o if the cutting mechanism strikes any foreign object or your machine should start making an unusual noise or vibration, immediately stop the engine, disconnect the spark plug wire from the spark plug and move it away from the spark plug Allow the machine to stop and take the following steps: Inspect for damage Replace or repair any damaged parts Check for any loose parts and tighten to assure contin- ued safe operation e The engine must be kept clean of debris and other accu- mulations. e 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 feed opening e Never place your hands or any other part of your body or clothing inside the feeding chamber, discharge chute or near any moving part while the engine is running e Keep all guards and deflectors in place and in good work- ing condition to assure continued safe operation e Always stand clear of the discharge area when opelating this machine e Keep your face and body back from the feed opening to avoid accidental bounce back of any material. ® Do not over-reach Keep proper balance and footing at all times e The engine governor settings on your machine must not be altered, changed, or tampered with The governor contrels the maximum safe operating speeds and pro- tects the engine and all moving parts from damage caused by overspeed. e Do not transport machine while engine is running e Do not operate engine if air cleaner or cover directly over carburetor air intake is removed, except for adjustment. Removal of such parts could create a fire hazard MAINTENANCE AND STORAGE o When this equipment is stopped for servicing, inspection, storage or to change an accessory, make sure the spark plug wire is disconnected from the spark plug and moved away from the spark plug The machine should be allowed to cool down before making such inspection, adjustments, service, etc Maintain your machine with care and keep it clean for the best and continued safe operation o De not use flammable solutions to clean the air filter O When not in use, your machine should be stored out of the reach of children. Keep where gasoline fumes will not reach an open flame or spark For long periods of stor- age, refer to the "Storage" section of this manual. I LOOK FOR THIS SYMBOL TO POINT OUT] IMPORTANT SAFETY PRECAUTIONS. ITI MEANS--ATTENTION!!! BECOME ALERT!!! YOUR SAFETY S NVOLVED. / J 2
CC'NGRATULATIONS on your purchase of a Sears Crattsman Chipper-Shredder It has been designed, engi- neered and manufactured to give you the best possible dependability and performance, Should you experience any problem you cannot easily rem- edy, please contact your nearest Sears Service Center/ Department in the United States, We have competent, well- trained technicians and the proper tools to service or repair this unit Please read and retain this manual The instructions will enable you to assemble and maintain your chipper-shredder properly Always observe the "SAFETY RULES" MODEL NUMBER SERIAL NUMBER DATE OF PURCHASE THE MODEL AND SERIAL NUMBERS WILL BE FOUND ON A LABEL ATTACHED TO THE FRAME OF THE CHIPPER-SHREDDER YOU SHOULD RECORD BOTH SERIAL NUMBER AND DATE OF PURCHASE AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE CUSTOMER RESPONSIBILITIES e Read and observe the safety rules, e Follow a regular schedule in maintaining, caring for and using your chipper-shredder, ® Follow the instructions under "Customer Respons- ibilities" and "Storage" sections of this Owner's Manual PRODUCT SPECnFICATIONS Horsepower: &0 Displacement: 19,44 cu in Fuel Capacity: 1 Gallon (Unleaded) Spark Plug (Gap 030 in.): Champion J19LM (or Equivalent) Magnetron ® Ignition Air Gap: ,0125 in MAINTENANCE AGREEMENT A Sears Maintenance Agreement is available on this product Contact your nearest Sears store for details WARNING: This unit is equipped with an internal combus- tion engine and should not be used on or near any unim- proved 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 effec- tive 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 availabte through your nearest Sears Authorized Service Center (See the REPAIR PARTS section of this manual) WARRANTY ONE YEAR LIMITED WARRANTY OH CRAFTSMAN GAS CHIPPER-SHREDDER For one year from the date of purchase, when this Craftsman Chipper-Shredder is maintained, lubricated and tuned up according to the instructions in the owner's manual, Sears will repair, free of charge, any defect in material and workmanship If this Craftsman Chipper-Shredder is used for commercial or rental purposes, this warranty applies for only 30 days from the date of purchase. This warranty does not cover: ® Expendable items which become worn during normal use, such as blades, chipper blades, flails, air cleaners, spark plugs and catcher bags e Repairs necessary because of operator abuse or negligence, including bent crankshafts and the failure to maintain the equipment according to the instructions contained in the owner's manual, WARRANTY SERVICE IS AVAILABLE BY RETURNING THE CRAFTSMAN CHIPPER-SHREDDER TO THE NEAREST SEARS SERVICE CENTER/DEPARTMENT 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 may vary from state to state. SEARS, ROEBUCK AND CO. D/817WA, Hoffman Estates, IL 60195
TABLE OF CONTENTS ' SAFETY RULES ....................................................................... 2 PRODUCT SPECIFICATIONS ..................................... 3 WARRANTY ......................................................................................... 3 INDEX ......................................................................................... 4 ASSEMBLY .................................................................... 5-7 OPERATION ..................................................................... 7-10 CUSTOMER RESPONSIBILITIES .......................... 11, 12 STORAGE ............................................................................. 13 SERVICE AND ADJUSTMENT .............................. 13-15 TROUBLE SHOOTING ........................................................... 16 PARTS ORDERING/SERVICE ...................................... 16 REPAIR PARTS--CHIPPER-SHREDDER ........ 17, 18 REPAIR PARTS--ENGINE ...................................... 19-23 HNDEX A Adjustments: Carburetor ................................................................................. 15 Engine Speed ................................................................... 15 Assembly Instructions: Catcher Bag ............................................................................. 6 Chute Crank Deflector ............................................................ 6 Hopper Assembly ....................................................... 6 Catcher Bag ....................................................... 6, 7 C Catcher Bag ................................................................... 6, 7 Controls .......................................................................... 7 Customer Responsibilities ................................ 3, 11,12 E Engine: Maintenance ................................................... 11, 12 Starting .............................................................................. 10 Stopping ................................................................................. 8 Storage ................................................................................... 13 F Fuel ...................................................................................................... 9 L Lubrication ............................................................... 11 M Maintenance: Agreement ....................................................................................... 3 Schedule ......................................................... 11 Engine ....................................................................... 11, 12 Chipper-Shredder ......................................................................... 11 O Oil .............................................................................................. 9 Operating Tips ................................................................................. 8 R Repair/Replacement Parts ......................................... 17-23 Responsibilities, Customer ..................................... 3, 11-13 S Safety Rules .................................................................... 2 Sharpening ..................................................................... 14, 15 Service Recommendations .............................................. 11 Spark Plug ....................................................................... 12 Specifications ...................................................................... 3 Storage ...................................................................................... 13 T Table of Contents .............................................................. 4 Trouble Shooting ............................................................... 16 U Unclogging ............................................................... 13, 14 Unpacking ...................................................................................... 5 W Warranty .......................................................................... 3 4
£ ASSEMBLY mNSTRUCTmONS IMPORTANT: This unit is shipped WITHOUT GASO_ LINE or OIL After assembly, see operation section of this manual for proper fuel and engine oil recommen- dation& NOTE: To determine right and left hand sides of your ...Fla.t-"_/'-,f'_'_ chipper-shredder, stand behind and face the hopper 5_l_Sl]el_ k_,,,.._) (engine is at the front of the unit) ⢠_ _ Your chipper-shredder has been completely assem- I II bled at the factory, except for the hopper assembly I I_ (hopper hood and upper leaf ramp section have been I II sub-assembled), upper guide assembly, chute deflec- ! ]_ tor and the catcher bag The hardware pack and safe- I tl ._ ty glasses are also included in the carton I] [/_._'_]-<'-Hex Lock The hardware pack contains the parts shown in figure II [l_..)))1 Nut 5/16-18 1 (shown full size) 1 _ Thread b il TO REMOVE CHIPPER-SHREDDER FROM CARTON I !l Cut the corners of the carton Remove all packing I II ..... inserts Roll chipper-shredder out of the carton Make I 11----5110-1_e'.-%1°. :' Loog certain all parts and literature have been removed I !J before the carton is discarded I II TOOLS REQUIRED FOR ASSEMBLY I II (1) Phillips Screwdriver I II (2) 1/2"or Adjustable Wrenches I / (2) 7/16 or Adjustable Wrenches I i I__ M [] [] I_- TrusoM°chi°eScrews I L .e LockNu,a FIGURE 1.
Spacers Hinge) Housing Assembly Hex Lock- Nut Hand Chute Deflector FIGURE 2. Stop Washer Upper Guide Release Assembly Bar Frame FIGURE 3. Hopper Pivot Door ASSEMBLE THIS TRUSS SCREW AND NUT FIRST Bar 8-3/8" Long Flat Washer Hex Lock Nut Hopl: Assembly Jper Guide Assembly pper Leaf Ramp Section Remove Truss Screw and Nut FIGURE 4. , Drawstring ./ 'Plunger FIGURE 5. HOW TO SET-UP YOUR CHIPPER-SHREDCER MAKE CERTAIN THE SPARK PLUG WIRE IS DISCONNECTED AND MOVED AWAY FROM THE SPARK PLUG BEFORE ASSEMBLING THE CHIPPER- SHREDDER. _-A'I-rACHING THE CHUTE DEFLECTOR e Remove the hand knobs and cupped washers from each side of the discharge opening on the left side of the chipper-shredder e Remove hex lock nut, two spacers and hex bolt from inside the hinge on top of the housing assem- bly Do not remove one spacer from the hex bolt e Place the chute deflector in position on the dis- charge opening Insert hex bolt and spacer through hinge on chute deflector and housing (spacer fits inside of hinge). See figure 2. ® Place second spacer over hex bolt, inside other part of hinge. Secure with hex lock nuL Tighten securely. e Secure both sides of chute deflector to housing using hand knobs and cupped washers (cupped side of washers go against chute deflector) -<-ATTACHING THE UPPER GUIDE ASSEMBLY Place upper guide assembly in position on frame, making certain edges of the upper guide assembly are underneath stop washers, and the release bar is in the slots= See figure 3 Insert hex bolt 8-3/8" long through upper guide assembly and frame Secure with flat washer and hex lock nuL NOTE: Make certain upper guide assembly can pivot by pulling up on release bar and lowering upper guide assembly If necessary, loosen hex lock nut a turn or two Put the upper guide assembly back into the raised position, "_-ATTACHING THE HOPPER ASSEMBLY Your chipper-shredder has been shipped with the upper leaf ramp section attached to the hopper assembly See figure 4 Attach the hopper assembly to the upper guide assembly as follows. Be certain to place heads of all truss machine screws inside of hopper assembly_ ⢠Remove one truss machine screw and nut from each side of hopper assembly as shown in figure 4. Push hopper pivot door down inside lower part of hopper as you place hopper assembly (both pieces) inside upper guide assembly_ Replace truss screws and nuts just removed, using the hole shown in figure 4, one on each side Tighten finger tight only e Place the six truss machine screws and nuts found in hardware pack in the remaining holes of hopper assembly, alternating sides of the unit and tighten- ing finger tight only ⢠After assembling all eight screws, tighten them securely <-ATTACHING THE CATCHER BAG Your chipper-shredder is equipped with a catcher bag to catch the shredded material 6
e To attach the bag, place the opening of the bag over the chute deflector so it completely covers the chute opening. Depress the plunger on the draw- string, and pull on the drawstring until the bag is tight around the chute opening. Release plunger to lock it into position See figure 5, OPERATnON KNOW YOUR CHIPPER-SHREDDER READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR CHIPPER-SHREDDER_ Compare the illustrations with your chipper-shredder to familiarize yourself with the location of various controls and adjustments Save this manual for future reference Engine Switch Choke Lever. Starter Handle Hopper Assembl Chipper Chute Oil Fill Dipstic Fuel Tank Chute Deflector Release Bar Bag FIGURE 6--Model 247.795861 Shown. MEETS ANSI SAFETY STANDARDS Sears chipper-shredders conform to the safety standard B71 6-1982 of the American National Standards Institute OPERATING CONTROLS (See figure 6) 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, ENGINE SHUT-OFF SWITCH--Used to stop the engine. FUEL SHUT-OFF VALVE--Used to stop the flow of fuel into the carburetor (located beneath the fuel tank) BEFORE USING YOUR CHIPPER-SHREDDER, AGAIN REFER TO THE "SAFETY RULES" AS SHOWN ON PAGE 2 OF THIS MANUAL ALWAYS BE CAREFUL, The operation of any chipper-shredder can result in foreign objects being thrown into the eyes, which can result in severe eye damage Always wear the safety glasses pro- vided with the chipper-shredder or eye shields before chipping or shredding, or while performing any adjustments or repairs. We recommend Wide Vision Safety Mask for over spectacles or standard glasses available at Sears Retail or Catalog Stores
TO STOP ENGINE ⢠Move engine shut-off switch to OFF position See figure 6 ⢠Disconnect spark plug wire and move away from spark plug to prevent accidental starting while equipment is unattended. e Close fuel shut-off valve when equipment is not in use to prevent fuel leakage. Hopper Assembly No Larger Than 1/2" Diameter Recommended) (Maximum) \ HOW TO USE YOUR CHIPPER-SHREDDER Do not attempt to shred or chip any material other than vegetation found in a normal yard (i..e, branches, leaves, twigs, etc.) WARNING: THE CHIPPER-SHREDDER DISCHARGES MATERIALS WITH CON- SIDERABLE VELOCITY, KEEP AWAY FROM THE AREA AROUND THE CHUTE DEFLECTOR, ALWAYS STOP THE ENGINE AND DISCONNECT THE SPARK PLUG WIRE WHEN REMOVING OR A'I-rACHING THE BAG WHEN CHANGING CONTAINERS OR WHEN REMOVING THE SHREDDED MATERIAL. WEAR SAFETY GLASSES AND GLOVES WHENEVER USING YOUR CHIPPER-SHREDDER. The chipper-shredder is designed for three different methods of operation. e Leaves and small branches up to 1/2" diameter (recommended) or 1" diameter (maximum) can be fed into the hopper' assembly when it is in the raised position. See figure 7 If it becomes neces- sary to push material into the chipper-shredder, use a small diameter stick--NOT YOUR HANDS. The stick should be small enough that it will be ground up if gets into the impeller assembly WARNING: DO NOT PUT MATERIAL LARGER THAN 1/2" IN DIAMETER (REC- OMMENDED) or 1" DIAMETER (MAXI- MUM) INTO THE HOPPER ASSEMBLY. MATERIAL UP TO A MAXIMUM OF 3" IN DIAMETER MATERIAL MAY BE FED INTO THE CHIPPER CHUTE. DO NOT ATTEMPT TO SHRED OR CHIP ANY MATERIAL LARGER THAN 3" IN DIAME- TERo PERSONAL INJURY OR DAMAGE 1"O THE MACHINE COULD RESULT. FIGURE 7. ® Leaves and small twigs can be raked into the hop- per assembly when the hopper assembly is low- ered to the ground. See figure 8 Small branches up to 1/2" diameter (recommended) or 1" diam- eter (maximum) can also be fed into the hopper assembly in this position See figure 9 \ FIGURE 8. No Larger Than 1/2" Diameter (Recommended) Or 1" Diameter (Maximum) FIGURE 9.
® To lower the hopper assembly, use one hand to grasp the handle at the top of the hopper assembly and lift slightly Pull up on the release bar, and lower the hopper assembly to the ground Release the bar_ See figure 10 Hopper 5/ Release Bar FIGURE 10. e Bulky material, such as stalks or heavy branches, up to 3" in diameter, should be fed into the chipper chute See figure 11 WARNING: MAKE CERTAIN THE CHIP- PER CHUTE DOOR IS CLOSED WHEN NOT IN USE. 3" Maximum ipper Chute Oil Drair FIGURE 11. 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_ For best per- formance, it is important to keep the shredding blade and the chipper blades sharp If the composition of the material being discharged changes (becomes stringy, etc) or if the rate at which the material is dis- charged 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. GAS AND OIL FiLL-UP OIL Only use high quality detergent oil rated with API ser- vice classification SG Select the oil's viscosity grade according to your expected operating temperature. Colder <_ 32°F _ Warmer 5W30 _ SAE 30 NOTE: Although multFviscosity oils (5W30, 10W30, etc.) improve starting in cold weather, these multi- viscosity oils will result in increased oil consumption when used above 32°F. Check your oil level more fie- quently to avoid possible engine damage from run- ning low on oil e Fill engine with oil as follows. Remove oil fill dip- stick See figure 12 With chipper-shredder level, use a funnel to fill engine with oil to FULL mark on dipstick. Capacity is approximately 2-3/4 pints. Be careful not to overfill. Tilt chipper-shredder toward the left (from behind the hopper), then re-level. Check oil level Refill to FULL mark on dipstick if necessary. Replace dipstick and tighten. 9 Oil Fill Dipstick Oil Dipstick \ Model 247.795860 Model 247,795861 FIGURE 12, GAS e Remove fuel cap and fill fuel tank with about 1 gal- lon of clean, fresh, lead-free grade automotive gasoline DO NOT use Ethyl or high octane gaso* line. Be certain container is clean and free from rust or foreign particles Never use gasoline that may be stale from long periods of storage in the container 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" in SERVICE AND ADJUSTMENT section WARNING: EXPERIENCE INDICATES THAT ALCO- HOL 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 OR TREATED WITH FUEL STABILIZER BEFORE STORAGE FOR 30 DAYS OR LONGER. USE FRESH FUEL NEXT SEASON. SEE "STORAGE" SECTION FOR ADDITIONAL INFORMATION. NEVER USE ENGINE OR CARBURETOR CLEAN- ER PRODUCTS IN THE FUEL TANK OR PERMA- NENT DAMAGE MAY OCCUR. Spark Plug, Wire and Boot Muffler Starter Handle \4 \\ FIGURE 13. ® Attach spark plug wire and rubber boot to spark plug if necessary. See figure 13. e Open fuel shut-oft valve by turning in direction of arrow several turns. See figure 14 ® Move choke lever down to CHOKE position e Place the engine shut*off switch in ON position See figure 14 ® Grasp starter handle (see figure 13) and pull rope out slowly until engine reaches start of compres- sion cycle (rope will pull slightly harder at this point) Let the rope rewind slowly 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 mech- anism falling into place, and should be expected In addition, the flails and finger's will be noisy after the engine is started, until the impeller reaches full speed e Pull rope with a rapid, continuous, full arm stroke Keep a firm grip on start handle Let rope rewind slowly. Do not let starter handle snap back against starter e Repeat preceding two instructions until engine fires. When engine starts, move choke lever on engine halfway between CHOKE and RUN. NOTE: If engine does not fire after three attempts, move choke lever halfway between CHOKE and RUN position and try again. See figure 14. Fuel Shut=Off Valve To ."°o Choke "" " Choke Lever Engine Shut-Off Switch FIGURE 14. TO START ENGINE _ WARNING: BE SURE NO ONE OTHER THAN THE OPERATOR iS STANDING NEAR THE CHIPPER-SHREDDER WHILE STARTING OR OPERATING. DO NOT OPERATE THIS CHIPPER-SHREDDER UNLESS THE CHUTE DEFLECTOR HAS BEEN PROPERLY INSTALLED AND IS SECURED WITH THE HAND KNOBS. 10 TO STOP ENGINE e Move engine shut-oft switch to OFF position See figure 14. ® Disconnect spark plug wire and move away from spark plug to prevent accidental starting while equipment is unattended ® Close fuel shut-off valve when equipment is not in use to prevent fuel leakage.
CUSTOMER RESPONSDBnLITIES MAINTENANCE SCHEDULE ,/___//_O_/ FILL IN DATES /_ ,/ _/ _ / ,_/a,,o_/^_,co/ .s REGULAR SERVICE ! / / / SERVICE ....... DATES F- Oil Pivot Points _/ O Clean Shredder q _1 rt Check Engine Oil _/ Change Engine Oil _] _/ Service Air Cleaner _/ z Clean Engine Cylinder _/ _/ Spark Plug "4 _/ Muffler _/ _/ CHECK GENERAL RECOMMENDATIONS WARNING: ALWAYS STOP THE ENGINE AND DISCONNECT THE SPARK PLUG WIRE BEFORE PERFORMING ANY MAINTENANCE OR ADJUSTMENTS. e Periodically check all fasteners and be sure they are tighL e Follow the Maintenance Schedule above CHIPPER-SHREDDER LLIBRICATION Lubricate the pivot paints on the release bar, hopper assembly, chute deflector and chipper chute once a season using a light oil ENGINE ENGINE OIL Only use high quality detergent oil rated with API ser- vice classification SG Select the oil's viscosity grade according to your expected operating temperature Colder -._ 32°F " Warmer 5W30 M SAE 30 NOTE: Although multi-viscosity oils (SE30, 10W30, etc ) improve starting in cold weather, these multi- vis- cosity oils will result in increased oil consumption when used above 32°F Check your oil level more fre- quently to avoid possible engine damage from run- ning low on oil Your four-cycle engine will normally consume some oil--therefore, check engine oil level regularly approx- imately every five hours of operation and before each usage Stop engine and wait several minutes before checking oil level. With engine level, the oil must be to FULL mark on dipstick (refer to figure 12). Change engine oil after the first five hours of operation, and every twenty-five hours thereafter. 11 To Drain Oil: e Drain oil while engine is warm a_ Remove oil drain plug Refer to figure 11. Catch oil in a suitable container b When engine is drained of all oil, replace drain plug securely. ® Refill with fresh oil Refer to GAS AND OIL FILL- UP section, e 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 per- formance Never run your engine without air cleaner com- pletely assembled. To Service Air' Cleaner: Service pre-cleaner after every 25 hours of use, or at least once a season. Service cartridge every 100 hours of use, or at least once a season. Service pre- cleaner and cartridge more often under dusty condi- tions. e Remove wing nut and cover To service foam pre-cleaner: Remove pre-cleaner by sliding it off the cartridge Wash in liquid deter- gent and water. Squeeze dry in a clean cloth Saturate in engine oil. Squeeze in a clean, absorbent cloth to remove all excess oil If pre- cleaner is very dirty, replace it.. @ To service cartridge: Remove cartridge by remov- ing wing nut and lifting off cup and cartridge Clean by tapping gently on a flat surface. If very dirty, replace.. Do not oil cartridge NOTE: Do not use petroleum solvents leg. kerosene) or pressurized air to clean cartridge They will cause cartridge to deteriorate. ⢠Reinstall cartridge, cup, pre-cleaner and cover'. ⢠Fasten wing nuts securely. Foam =re-Cleaner Wing Nut 'Cup CLEAN ENGINE '. Clean engine periodically_ Remove dirt and debhs with a cloth or brush. Cleaning with a forceful spray of water is not recommended as water could contami- nate the fuel system Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in figure 17 to avoid overspeeding, overheating and engine damage. Clean more often if necessary. WARNING: PERIODICALLY CLEAN MUF- FLER AREA TO REMOVE ALL GRASS, DIRT AND COMBUSTIBLE DEBRIS. LEANING The chipper-shredder may be cleaned by running water from a hose through the hopper assembly and chipper chute with the engine running. Allow the chipper-shredder to dry thoroughly. e Wash the bag periodically with water. Allow to dry thoroughly in the shade. Do not use heat. /I_[-_'F]I_-_ .._r_ _ CleanOut cha. and FIGURE 17. SPARK PLUG The spark plug should be cleaned and the gap reset to .030" at least once a season or' every 50 hours of operation. See figure 18. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type. NOTE: Do not sandblast spark plug Spark plug should be cleaned by scraping or wire brushing and washing with a commercial solvent.. .030" Feeler Gau FIGURE 15. FUEL FILTER Your engine is equipped with a replaceable in-line fuel filter. Replace the fuel filter every season. See figure 16 Refer to engine parts list for' correct replacement filter, FIGURE 16. 12 Plug FIGURE 18. MUFFLER 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.
STORAGE ® Drain the fuel tank 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. 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 AND SPACE HEATERS, FURNACES, CLOTHES DRYERS, STOVES, ELECTRIC MOTORS, ETC. NOTE: 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 e 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 SEPARA- TION AND FORMATION OF ACIDS DURING STOR- AGE. ACIDIC GAS CAN DAMAGE THE FUEL SYS- TEM OF AN ENGINE WHILE IN STORAGE ® Start the engine and let it run until the fuel lines and carburetor are empty e Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur e 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 stor- age 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 carbure- tor if using fuel stabilizer e 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 table- spoon) of engine oil into cylinder and crank slowly to distribute oil. Replace spark plug. OTHER e 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 e Store unit in a clean, dry area Do not store next to corrosive materials, such as fertilizer NOTE: If storing in an unventilated or metal storage shed, be certain to rustproof the equipment by coating with a light oil or silicone. SERVRCE & ADJUSTMENT O WARNING: ALWAYS STOP ENGINE AND DISCONNECT SPARK PLUG WIRE AND MOVE IT AWAY FROM SPARK PLUG BEFORE PERFORMING ANY ADJUST T MENTS OR REPAIRS. REMOVING THE FLAIL SCREEN If the discharge area becomes clogged, remove the flail screen and clean area as follows e Stop the 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 O Q Loosen the two hand knobs on each side of the chute deflector. Lift the chute deflector up, and tie it out of the way. Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins Lift the flail screen from inside the housing. See figure 19_ Clean the screen by scraping or washing with water. Reinstall the screen NOTE: Be certain to reassemble the flail screen with the curved side clown as shown in figure 19. 13
Chute Deflector. Hairpin _ Clips, Clevis Pins --_Hex Nuts Washers Screen Chipper Chute FIGURE 19. Hand Knobs SHARPENING OR REPLACING THE BLADES CHIPPER BLADES ® Disconnect spark plug wire and move it away from spark plug e Remove the flail screen as instructed in previous section e Remove the chipper chute by removing three hex nuts and washers. A 1/2" wrench is required_ See figure 19. NOTE: When reassembling, the cupped washer goes on the bottom of the chipper chute with the cupped side against the chute. e Rotate the impeller assembly by hand until you locate one of the 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 hous- ing). See figure 20_ ⢠Remove the other blade in the same manner FIGURE 20. Replace or sharpen blades If sharpening, make ogr- tain 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 19 (sharp edge is assembled toward the slotted opening in the impeller assembly). SHREDDING BLADE The shredding blade may be removed for sharpening or replacement as follows. e Disconnect spark plug wire and move it away from spark plug_ e Lower the hopper assembly Block up the housing_ See figure 21. e 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 e Remove the back-up plate. NOTE: When reassembling, make certain the open- ing on the back-up plate is toward the bottom of the uniL The back-up plate may be reversed to provide a new cutting edge. Allen Screws 14 Torque Wrench FIGURE 21. e Loosen the two hand knobs and cupped washers which secure the chute deflector, and raise the chute deflector e 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. e Remove the two outside screws on the blade, using a 3/16" allen wrench and a 1/2" wrench. e Remove the blade by removing the center bolt, lock washer and flat washer.
NGTE: Use caution when removing the blade to avoid contacting the weld bolts on the housing_ e When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. An unbal- anced blade will cause excessive vibration when rotating at high speeds and may cause damage to the unit e The blade can be tested for balance by balancing it on a round shaft screwdriver or nail. Remove metal from the heavy side until it is balanced evenly. See figure 22_ Nail_\ _ / \ FIGURE 22. e When reassembling the blade, tighten to between 550 and 650 inch pounds, or lacking torque wrench, tighten securely FLAILS The flails, located inside the housing, may be reversed when they become dull It is suggested that this procedure be performed by your nearest Sears Service Department CARBURETOR ADJUSTMENT WARNING: IF ANY ADJUSTMENTS ARE MADE TO THE ENGINE WHILE THE ENGINE IS RUNNING (E.G. CARBURE- TOR)p KEEP CLEAR OF ALL MOVING PARTS. BE CAREFUL OF HEATED SUR- FACES AND MUFFLER. Minor carburetor adjustment may be required to com- pensate for differences in fuel, temperature, altitude or load NOTE: A DIRTY AIR CLEANER WILL CAUSE ENGINE TO RUN ROUGH. BE CERTAIN AIR CLEANER IS CLEAN AND ATTACHED TO THE CARBURETOR BEFORE ADJUSTING CARBURE- TOR. DO NOT MAKE UNNECESSARY ADJUST- MENTS FACTORY SETTINGS ARE SATISFACTO- RY FOR MOST APPLICATIONS AND CONDITIONS Never attempt to change maximum engine speed It is pre-set at the factory and should be changed only by a qualified service technician who has the necessary equipment The carburetor may need re-adjusting if engine lacks power or does not idle properly If adjustments are needed, proceed as follows e Close needle valve (see figure 23) clockwise ((_) finger tight only. Forcing may cause damage. Then open 1-1/2 turns counterclockwise ( ,'_ ) ® Start engine and allow to warm for five minutes e Close needle valve clockwise (,'-_) until engine starts to lose speed (lean mixture). Then slowly open needle valve counterclockwise (,'_) until engine JUST BEGINS to run unevenly. This mix- ture should be rich enough for best performance under load O Rotate throttle counterclockwise (,'_) and hold against throttle stop. If engine idles, no further adjustment is necessary. If engine idles too fast, turn idle speed adjusting screw counterclockwise (_) until slower speed is obtained. O If engine dies, turn idle speed adjusting screw 1/4 turn clockwise (_) Place throttle control in FAST position and restart engine. Move throttle control to IDLE position. If engine does not idle, repeat third step Test the engine by using the chipper-shredder If engine tends to stall or die out, it usually indicates that the mixture is slightly lean and it may be nec- essary to open ("_) the needle valve slightly to provide a richer mixture This richer mixture may cause a slight unevenness in idling. Idle Speed Adjust _g Screw Throttle Idle Mixture FIGURE 23. Needle Valve (High Speed) 15 ENGINE SPEED Your engine speed has been factory set 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 adjust- ment
TROUBLE SHOOTING CORRECTIVE ACTION PROBLEM POSSIBLE CAUSE(S) Engine fails to start e Fuel shut-off valve closed. e Fuel tank empty, or stale fuel. e Spark plug wire disconnected e Faulty spark plug. Loss of power; e Spark plug wire loose. operation erratic ⢠Unit running on CHOKE e Blocked fuel line or stale fuel. e Water or dirt in fuel system e Carburetor out of adjustment e Open fuel shut-off valve e Fill tank with clean, fresi_ fuel e Connect wire to spark plug ⢠Clean, adjust gap or replace. e Connect and tighten spark plug wire ⢠Move choke lever to OFF position e Clean fuel line; fill tank with clean fresh gasoline e Disconnect fuel line at carburetor to drain fuel tank Refill with fresh fuel e Adjust carburetor or contact your SEARS Service Center ⢠Service air cleaner See Customer Responsibilitie. _ section of this manual. ⢠Dirty air cleaner, Engine overheats ⢠Carburetor not adjusted ⢠Contact your SEARS Service Center properly ⢠Engine oil level low. ⢠Fill crankcase with proper oil. Too much vibration e Loose parts or damaged ⢠Stop engine immediately and disconnect impeller, spark plug wire Tighten all bolts and nuts. Make all necessary repair& If vibration continues. have unit serviced by a SEARS Service Center. Unit does not ⢠Discharge chute clogged e Stop engine immediately and disconnect discharge spark plug wire. Clean flail screen and inside of blower housing See Service/Adjustments section of this manuel. e Foreign object lodged in impeller e Stop engine immediately and disconnect spark plug wire. Remove lodged object. Rate of discharge e Shredding blade and/or chipper ⢠Sharpen or replace shredding and chipper slows considerably or blades dull blades composition of discharged material changes NOTE: For repairs beyond the minor adjustments listed above, please contact your nearest SEARS Service Center. HOW TO ORDER REPLACEMENT PARTS Each chipper-shredder has its own model number. Each engine has its own model number. The model number for your chipper-shredder will be found on a label attached to the frame The model number for the engine will be found on tile blower housing of the engine All parts listed herein may be ordered through Sears, Roebuck and Co. Service Centers and most Retail Stores WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: *PRODUCT - "8 H.P. Chipper-Shredder" *MODEL NUMBER - 247.795860 247,795861 *ENGINE MODEL NO. - 190412-6143-01 190432-6117-01 *PART NUMBER *PART DESCRIPTION Your Sears merchandise has added value when you consider that Sears has service units nationwide staffed with Sears trained technicians professional technicians specifically trained on Sears prodects, having the parts, tools and the equipment to insure that we meet our pledge to you../'we service what we sell/' 16