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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)
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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, whenthis Craftsmanchipper-shredderis maintained,lubricated,and tuned upaccordingto the operatingand maintenance instructionsinthe owner's manual,Sears willrepair, free of charge, any defect in material orworkmanship.
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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 builtto be operated according to the rules for safe operation in / RAN P_I=R- this manual. As with an
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impeller tocome toacomplete stop. The impeller least two minutes before refueling. continues torotate for a few seconds after the engine b. Replacogasoline cap securely and wipe offany is shutoff. Never place any partof the body inthe spilledgasolinebefore startingthe engine as it impeller area untilyou are sure the impeller has may cause a fire orexplosion. stoppedrotating. c. Extinguishall cigarettes,cigars, pipesand other Muffler and engine become hotand can cause a bum. sourcesof ignition. D
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Remove all loose parts includingowner's manual.See figure 1. Rollchipper-shredderoutof the canon. Make certainall partsand literaturehave been removedbefore the cartonis discarded. LOOSE PARTS (Refer to figure 1.) Discharge Chute a, Hopper Assembly Hopper* b. DischargeChute c. Chipper Chute d. Catcher Bag e. Bottle of Oil f. Safety Glasses g. Owner's Manual (not shown in figure 1) TOOLS REQUIRED Bottle 1. 1/2"or AdjustableWrenches of Oil 2. 7/16" orAdjustableWrenches ChipperChute 3. 9/16"or Adju
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through hingeon dischargechute and housing Inlet Guide Opening (spacer fits inside of hinge). See figure 3 inset. Hex Nut Hopper Pivot Door --Hex Bolt He_ Spac_er_-J-_ Hinge Hopper Nut \ Wing Dischargl Inlet 1. Guide Figure 3 Hopper Place second spacerover hex boltinsidethe other part ofthe hinge. Secure with hex lock Figure 4 nut. Tighten securely. To raisethe hopper,holdthe hopperby the Secure both sidesof dischargechute to housing hand-holdand liftit uptill it clicksintoposition. usingwing kn
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WARNING; This flapcontrolrod is a safety Insertone each of the hex bolts,lock nuts,and device to hold the flap in place insidethe flat washers(that you earlierremoved) through & hopper while shreddingbranches. Do not each hole inthe chuteand the brace.Tighten operate the chipper-shredderwithout these boltsto secure brace to the chute. properlyattachingthisflapcontrolrodto the Tightenboltssecuringthe bracetothe lower unit. frame.Theseboltshadbeen removedeadier. Tighten the three nutsonthe weldstu
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Read thisowner's manual and safety rules before operatingyour chipper-shredder.Compare the illustration infigure9 withyour chipper-shredderto familiarize yourselfwiththe locationof variouscontrolsand adjustments.Save this manual for future reference. eyes, which can result insevere eye damage. Always wear safety glasses provided withthe chipper-shredderbefore chippingor shredding,orwhile performingany _ he operation of any chipper-shredder can result in foraign objects being thrown intothe adjus
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Add oil if necessary. Replace dipstick and tighten. shredder, again refer to the safety rules on WARNING: Before usingyourchipper- pages 3 and 4 of thismanual. Always be NOTE: Do not overfill. Oil bottle packed with unit careful. contains 26 oz. of oil. Gasoline GAS AND OIL FILL-UP WARNING: Experienceindicatesthat alcohol Oil (Packed with unit) blended fuels (called gasohol or using ethanolor methanol)can attract moisturewhich leadsto Only use high quality detergent oil ratedwith separationand f
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NOTE: TOprevent the unit fromsliding,place your flails and fingers which are part of the shredding footfirmlyagainst the tire. mechanism falling intoplace, and shouldbe expected./n addition,the flails and fingers will be noisyafter the engine is started, untilthe impeller 1. Attach spark reaches furl speed. plug wire -- STOPPING ENGINE Movestarterswitch to OFF position. Disconnect spark plugwire andmove awayfrom sparkplugto preventaccidentalstarting. \ USING YOUR CHIPPER-SHREDDER WARNING: Do not
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changes (becomes stdngy, etc.) or if the rate atwhich WARNING: The chipper-shredder the material is discharged slows down considerably, it discharges materialswithconsiderable A is likely that the shredding blade and/or chipper velocity.Keep away from the area aroundthe blades are dull and need to be sharpened or discharge chute. Always stopthe engine and replaced. Refer to Service and Adjustments section. disconnect sparkplugwirewhen removingor IMPORTANT: There is a flail screen located inside
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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 operatingtemperature. Refer to page 9 ofthis To Service Air Cleaner: manualfor viscositychart. 1. Service pre-cleaner after every 25 hours of use, The four-cycle engineof your chipper-shredder or at least once a season. willnormallyconsumesome oil.Therefore,
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Ifnecessary, replace paper filter(do notattempt to clean). Installnew filter on base. ' Feeler ( Slide pre-cleaner overfilter. Installcoverand wing nut. Tightenwing nutsecurely. Clean Engine Plug Clean engine periodically. Remove dirt and debris with a clothor brush. Figure 15 Frequently remove grass clippings, dirt and debris from cooling fins,air intake screen and NOTE: Do not sandblast spark plug. Spark plug levers and linkage. See figure 14. This will help should be cleaned by scrapingor wir
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14
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Removethe flail screenas instructedin previous REMOVING THE FLAIL SCREEN section. Usinga 1/2"wrench, removethe chipperchute If the discharge area becomes clogged, remove the by removingthree hex nutsand washers. See flailscreenand clean area as follows. figure 17, Stop engine, make certain the chipper- Usinga 7/16" wrench,removethe brace shredder has come to a complete stop and (holdingthe chuteto the frame) by removingthe disconnect spark plug wire from the spark plug hex bolts. before uncloggi
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Disconnect spark plug wire and move it away causedamage to theunit.The bladecan be tasted from spark plug. for balance by balancing itona roundshaft Lower the hopper assembly. Block upthe screwddverornail.Removemetalfrom the heavy housing.See figure19. side untilitis balancedevenly.See figure20. When reassemblingthe blade, tightencenter Weld Bolt boltto between 550 and 650 inch-poundsand the two outer boltsto between250and 350 inch- Allen pounds,or lackingtorquewrench,tighten Screw securely. 1.
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Prepare your chipper-shredderfor storageat the end products in the fuel tank or permanentdamage of the season or if the unitwillnot be usedfor 30 days may occur. or more. Use fresh fuel next season. WARNING: Never store machinewithfuel NOTE: Fuel stabilizer is an acceptable alternativein minimizing the formation of fuel gum deposits during inthe fueltank insideof building where A storage. fumes may reach an open flame or spark, or where ignitionsourcesare present such Add stabilizerto gasoline i
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PROBLEM POSSIBLECAUSE CORRECTIVEACTION Engine failstostart 1.Fuel tankempty, orstale fuel 1. Filltank withclean, fresh fuel 2. Spark plugwiredisconnected 2. Connectwire to sparkplug. 3. Faulty sparkplug 3. Clean, adjustgap or replace. 4. Throttlecontrolnotincorrect 4. Movethrottlecontrolto FAST position position Lossof power; operationerratic 1. Spark plugwire loose 1. Connect and tightensparkplug wire 2. Movechoke leverto OFF 2. Unit runningon Choke position 3. Blockedfuelline orstale fuel 3. C
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SEARS CRAFTSMAN 8.5 H.P. CHIPPER-SHREDDER MODEL 247.775880 5 21 13 14 18 33 6 29 12 97 52 74 56 63 65 85 88 80 79 91 19
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Key Part No Key PartNo Description Description No No -- 770-1228A Owner's Manual 49 726-0214 Push Cap 5/8" dia, 1 11480 Stop Washer 50 734-0255 AirVaIve 2 681-0118 51 750-0793 Inlet Guide Assembly Chute Hinge Spacer 3 681-0144 52 712-3027 Arm Bracket Assembly Hex Ctr. Lock Nut 1/4-20 Thd. 4 710-0542 53 714-0149B Internal Cotter Pin Hex Flange Bolt: 5/16-18 x 8.375" (Gr.5) 55 720-0170 Hand Knob 710-0607 Hex Washer Head Self-Tap- 56 710-0805 Hex Bolt 5/18-18 x 1.5" ping Screw: 5/16-18 x 0.5" 57 78
