OWNER'SMANUAL

MODELNOS°247.795860247=795861

Caution:ReadandFollowAll SafetyRulesandInstructionsBeforeOperatingThisEquipment

8 HORSEPOWER3 CUTTING STAGEMULCHING AND BAGGINGCHIPPER=SHREDDER

AssemblyOperationCustomerResponsibilitiesServiceand AdjustmentRepairParts

SEARS,ROEBUCKAND CO., HoffmanEstates, 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 FOLLOWINGSAFETY INSTRUCTIONS. FAILURE TO COMPLY WITH THE INSTRUCTIONS MAY RESULT IN

TRAININGe 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 thismachine before operating it Keep this manual in a safeplace for future and regular reference and for orderingreplacement parts

e Children must never be allowed to operate this equipmente No one should operate this unit while intoxicated or while

taking medication that impairs the senses or reactionse 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, whichis 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 nearany moving part while the machine or engine is running.

e If it is necessary for any reason to inspect or repair thefeeding 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 sparkplug wire from the spark plug and move it away from thespark plug before attempting such inspection or repair

PREPARATIONe 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 clothingWear gloves when handling material

e HANDLE GASOLINE WITH CARE as it is an extremelyflammable fuel

o Check the fuel before starting the engine Do not fill thefuel tank indoors, while the engine is running, or while theengine is still hot Turn the unit off and let the engine coolbefore refueling

o Fuel your chipper-shredder in a clean area Do notsmoke while refueling

• Fuel tank cap must be secure at all times except dudngrefueling

® Avoid spilling gasoline or oil Wipe the unit clean of anyspilled fuel or oil.

® Store fuel and oil in approved containers, away from heator 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 Personalinjury or damage to the machine could result

o if the cutting mechanism strikes any foreign object oryour machine should start making an unusual noise orvibration, immediately stop the engine, disconnect thespark plug wire from the spark plug and move it awayfrom the spark plug Allow the machine to stop and takethe following steps:Inspect for damageReplace or repair any damaged partsCheck 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 tobuild up in the discharge area as this will prevent properdischarge and can result in kick-back from feed opening

e Never place your hands or any other part of your body orclothing inside the feeding chamber, discharge chute ornear 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 opelatingthis machine

e Keep your face and body back from the feed opening toavoid accidental bounce back of any material.

® Do not over-reach Keep proper balance and footing at alltimes

e The engine governor settings on your machine must notbe altered, changed, or tampered with The governorcontrels the maximum safe operating speeds and pro-tects the engine and all moving parts from damagecaused by overspeed.

e Do not transport machine while engine is runninge 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 STORAGEo When this equipment is stopped for servicing, inspection,

storage or to change an accessory, make sure the sparkplug wire is disconnected from the spark plug and movedaway from the spark plug The machine should beallowed to cool down before making such inspection,adjustments, service, etc Maintain your machine withcare and keep it clean for the best and continued safeoperation

o De not use flammable solutions to clean the air filterO When not in use, your machine should be stored out of

the reach of children. Keep where gasoline fumes will notreach an open flame or spark For long periods of stor-age, refer to the "Storage" section of this manual.

ILOOK FOR THIS SYMBOL TO POINT OUT]IMPORTANT SAFETY PRECAUTIONS. ITIMEANS--ATTENTION!!! BECOMEALERT!!!YOURSAFETY S NVOLVED. /

J2

CC'NGRATULATIONS on your purchase of a SearsCrattsman Chipper-Shredder It has been designed, engi-neered and manufactured to give you the best possibledependability 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 repairthis unitPlease read and retain this manual The instructions will

enable you to assemble and maintain your chipper-shredderproperly Always observe the "SAFETY RULES"

MODELNUMBER

SERIALNUMBER

DATE OF

PURCHASE

THE MODEL AND SERIAL NUMBERS WILL BE FOUNDON A LABEL ATTACHED TO THE FRAME OF THECHIPPER-SHREDDER

YOU SHOULD RECORD BOTH SERIAL NUMBER ANDDATE OF PURCHASE AND KEEP IN A SAFE PLACE

FOR FUTURE REFERENCE

CUSTOMER RESPONSIBILITIESe 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'sManual

PRODUCT SPECnFICATIONS

Horsepower: &0

Displacement: 19,44 cu in

Fuel Capacity: 1 Gallon(Unleaded)

Spark Plug (Gap 030 in.): ChampionJ19LM (or

Equivalent)

Magnetron ® Ignition Air Gap: ,0125 in

MAINTENANCE AGREEMENT

A Sears Maintenance Agreement is available on thisproduct 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 landunless the engine's exhaust system is equipped with aspark 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 onfederal lands A spark arrester for the muffler is availabtethrough your nearest Sears Authorized Service Center (Seethe REPAIR PARTS section of this manual)

WARRANTY

ONEYEARLIMITEDWARRANTYOHCRAFTSMANGASCHIPPER-SHREDDERFor one year from the date of purchase, when this Craftsman Chipper-Shredder is maintained, lubricated andtuned up according to the instructions in the owner's manual, Sears will repair, free of charge, any defect inmaterial and workmanship

If this Craftsman Chipper-Shredder is used for commercial or rental purposes, this warranty applies for only 30days 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 tomaintain the equipment according to the instructions contained in the owner's manual,

WARRANTY SERVICE IS AVAILABLE BY RETURNING THE CRAFTSMAN CHIPPER-SHREDDER TO THENEAREST SEARS SERVICE CENTER/DEPARTMENT IN THE UNITED STATES THIS WARRANTYAPPLIES 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 tostate.

SEARS, ROEBUCK AND CO. D/817WA, Hoffman Estates, IL 60195

TABLE OF CONTENTS '

SAFETY RULES .......................................................................2PRODUCT SPECIFICATIONS ..................................... 3WARRANTY .........................................................................................3INDEX .........................................................................................4ASSEMBLY ....................................................................5-7OPERATION .....................................................................7-10CUSTOMER RESPONSIBILITIES ..........................11, 12

STORAGE .............................................................................13SERVICE AND ADJUSTMENT ..............................13-15TROUBLE SHOOTING ...........................................................16PARTS ORDERING/SERVICE ......................................16REPAIR PARTS--CHIPPER-SHREDDER ........ 17, 18REPAIR PARTS--ENGINE ......................................19-23

HNDEXA

Adjustments:Carburetor .................................................................................15Engine Speed ...................................................................15

Assembly Instructions:Catcher Bag .............................................................................6Chute Crank Deflector ............................................................6Hopper Assembly ....................................................... 6Catcher Bag ....................................................... 6, 7

CCatcher Bag ...................................................................6, 7Controls .......................................................................... 7Customer Responsibilities ................................ 3, 11,12

EEngine:

Maintenance ................................................... 11, 12Starting ..............................................................................10Stopping .................................................................................8Storage ...................................................................................13

FFuel ......................................................................................................9

LLubrication ............................................................... 11

MMaintenance:

Agreement .......................................................................................3Schedule ......................................................... 11

Engine .......................................................................11, 12Chipper-Shredder .........................................................................11

OOil ..............................................................................................9Operating Tips .................................................................................8

R

Repair/Replacement Parts .........................................17-23Responsibilities, Customer .....................................3, 11-13

S

Safety Rules .................................................................... 2Sharpening .....................................................................14, 15Service Recommendations ..............................................11

Spark Plug .......................................................................12Specifications ......................................................................3Storage ......................................................................................13

TTable of Contents ..............................................................4Trouble Shooting ...............................................................16

U

Unclogging ............................................................... 13, 14Unpacking ......................................................................................5

W

Warranty .......................................................................... 3

4

£

ASSEMBLY mNSTRUCTmONS

IMPORTANT: This unit is shipped WITHOUT GASO_LINE or OIL After assembly, see operation section ofthis 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 beenI 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 figureII [l_..)))1 Nut 5/16-18 1 (shown full size)

1 _ Thread

b il TOREMOVECHIPPER-SHREDDERFROMCARTONI !l Cut the corners of the carton Remove all packingI II ..... inserts Roll chipper-shredder out of the carton MakeI 11----5110-1_e'.-%1°.:'Loog certain all parts and literature have been removed

I !J before the carton is discarded

I II TOOLSREQUIREDFORASSEMBLYI II (1) Phillips ScrewdriverI 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)

HousingAssembly

Hex Lock-Nut

Hand

ChuteDeflector

FIGURE 2.

StopWasher

UpperGuide

Release AssemblyBar

Frame

FIGURE 3.

Hopper PivotDoor

ASSEMBLE THISTRUSS SCREWAND NUT FIRST

Bar

8-3/8" LongFlat Washer

Hex Lock Nut

Hopl: Assembly

JperGuide

Assembly

pperLeaf

RampSection

Remove TrussScrew and Nut

FIGURE 4., Drawstring

./

'Plunger

FIGURE 5.

HOWTOSET-UPYOURCHIPPER-SHREDCERMAKE CERTAIN THE SPARK PLUGWIRE IS DISCONNECTED AND MOVEDAWAY FROM THE SPARK PLUGBEFORE ASSEMBLING THE CHIPPER-SHREDDER.

_-A'I-rACHING THE CHUTE DEFLECTORe Remove the hand knobs and cupped washers from

each side of the discharge opening on the left sideof the chipper-shredder

e Remove hex lock nut, two spacers and hex boltfrom 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 throughhinge on chute deflector and housing (spacer fitsinside of hinge). See figure 2.

® Place second spacer over hex bolt, inside otherpart of hinge. Secure with hex lock nuL Tightensecurely.

e Secure both sides of chute deflector to housingusing hand knobs and cupped washers (cupped sideof washers go against chute deflector)

-<-ATTACHING THE UPPER GUIDE ASSEMBLYPlace upper guide assembly in position on frame,making certain edges of the upper guide assemblyare underneath stop washers, and the release bar isin the slots= See figure 3 Insert hex bolt 8-3/8" longthrough upper guide assembly and frame Securewith flat washer and hex lock nuLNOTE: Make certain upper guide assembly can pivotby pulling up on release bar and lowering upper guideassembly If necessary, loosen hex lock nut a turn ortwo Put the upper guide assembly back into theraised position,

"_-ATTACHING THE HOPPER ASSEMBLYYour chipper-shredder has been shipped with theupper leaf ramp section attached to the hopperassembly See figure 4 Attach the hopper assemblyto the upper guide assembly as follows. Be certain toplace heads of all truss machine screws inside ofhopper 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 partof hopper as you place hopper assembly (bothpieces) inside upper guide assembly_ Replacetruss screws and nuts just removed, using the holeshown in figure 4, one on each side Tighten fingertight only

e Place the six truss machine screws and nuts foundin hardware pack in the remaining holes of hopperassembly, alternating sides of the unit and tighten-ing finger tight only

• After assembling all eight screws, tighten themsecurely

<-ATTACHING THE CATCHER BAGYour chipper-shredder is equipped with a catcher bagto catch the shredded material

6

e To attachthe bag,placethe opening of the bagover the chute deflector so it completely covers thechute opening. Depress the plunger on the draw-

string, and pull on the drawstring until the bag istight around the chute opening. Release plunger tolock it into position See figure 5,

OPERATnON

KNOWYOURCHIPPER-SHREDDERREAD 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 controlsand adjustments Save this manual for future reference

Engine

Switch

ChokeLever.

StarterHandle

HopperAssembl

ChipperChute

Oil FillDipstic

FuelTank

ChuteDeflector

ReleaseBar

Bag

FIGURE 6--Model 247.795861 Shown.

MEETSANSISAFETYSTANDARDSSears chipper-shredders conform to the safety standard B71 6-1982 of the American National Standards Institute

OPERATINGCONTROLS(See figure 6)RELEASE BAR--Used to release the hopper whenraising or lowering

CHOKE LEVER--Used to enrich the fuel mixture in

the carburetor when starting a cold engine.

STARTER HANDLE--Used to manually start theengine,

ENGINE SHUT-OFF SWITCH--Used to stop theengine.

FUEL SHUT-OFF VALVE--Used to stop the flow offuel into the carburetor (located beneath the fueltank)

BEFORE USING YOUR CHIPPER-SHREDDER, AGAIN REFER TO THE "SAFETY RULES" AS SHOWN ONPAGE 2 OF THIS MANUAL ALWAYS BE CAREFUL,

The operation of any chipper-shredder can result in foreign objects being thrown intothe 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 whileperforming any adjustments or repairs. We recommend Wide Vision Safety Mask forover spectacles or standard glasses available at Sears Retail or Catalog Stores

TO STOPENGINE• Move engine shut-off switch to OFF position See

figure 6

• Disconnect spark plug wire and move away fromspark plug to prevent accidental starting whileequipment is unattended.

e Close fuel shut-off valve when equipment is not inuse to prevent fuel leakage.

HopperAssembly

No Larger Than1/2" Diameter

Recommended)

(Maximum)

\

HOWTO USEYOURCHIPPER-SHREDDERDo not attempt to shred or chip any material otherthan vegetation found in a normal yard (i..e, branches,leaves, twigs, etc.)

WARNING: THE CHIPPER-SHREDDERDISCHARGES MATERIALS WITH CON-SIDERABLE VELOCITY, KEEP AWAYFROM THE AREA AROUND THE CHUTEDEFLECTOR, ALWAYS STOP THEENGINE AND DISCONNECT THE SPARKPLUG WIRE WHEN REMOVING ORA'I-rACHING THE BAG WHEN CHANGINGCONTAINERS OR WHEN REMOVING THESHREDDED MATERIAL. WEAR SAFETYGLASSES AND GLOVES WHENEVERUSING YOUR CHIPPER-SHREDDER.

The chipper-shredder is designed for three differentmethods of operation.

e Leaves and small branches up to 1/2" diameter(recommended) or 1" diameter (maximum) can befed into the hopper' assembly when it is in theraised 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 beground up if gets into the impeller assembly

WARNING: DO NOT PUT MATERIALLARGER THAN 1/2" IN DIAMETER (REC-OMMENDED) or 1" DIAMETER (MAXI-MUM) INTO THE HOPPER ASSEMBLY.MATERIAL UP TO A MAXIMUM OF 3" INDIAMETER MATERIAL MAY BE FEDINTO THE CHIPPER CHUTE. DO NOTATTEMPT TO SHRED OR CHIP ANYMATERIAL LARGER THAN 3" IN DIAME-TERo PERSONAL INJURY OR DAMAGE1"OTHE 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 branchesup to 1/2" diameter (recommended) or 1" diam-eter (maximum) can also be fed into the hopperassembly in this position See figure 9

\

FIGURE 8.

No Larger Than1/2" Diameter

(Recommended)Or 1" Diameter

(Maximum)

FIGURE 9.

® To lower the hopper assembly, use one hand tograsp the handle at the top of the hopper assemblyand lift slightly Pull up on the release bar, andlower the hopper assembly to the ground Releasethe bar_ See figure 10

Hopper

5/ ReleaseBar

FIGURE 10.

e Bulky material, such as stalks or heavy branches,up to 3" in diameter, should be fed into the chipperchute See figure 11

WARNING: MAKE CERTAIN THE CHIP-PER CHUTE DOOR IS CLOSED WHENNOT IN USE.

3" Maximum

ipperChute

OilDrair

FIGURE 11.

IMPORTANT: There is a flail screen located insidethe housing in the discharge area If the flail screenbecomes clogged, remove and clean as instructed inthe Service and Adjustments section_ For best per-formance, it is important to keep the shredding bladeand the chipper blades sharp If the composition ofthe material being discharged changes (becomesstringy, etc) or if the rate at which the material is dis-charged slows down considerably, it is likely that theshredding blade and/or chipper blades are dull andneed to be sharpened or replaced Refer to Serviceand Adjustments section.

GASANDOIL FiLL-UPOIL

Only use high quality detergent oil rated with API ser-vice classification SG Select the oil's viscosity gradeaccording 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 consumptionwhen used above 32°F. Check your oil level more fie-quently to avoid possible engine damage from run-ning low on oile 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 ondipstick. Capacity is approximately 2-3/4 pints. Becareful not to overfill. Tilt chipper-shredder towardthe left (from behind the hopper), then re-level.Check oil level Refill to FULL mark on dipstick ifnecessary. Replace dipstick and tighten.

9

OilFill

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 automotivegasoline DO NOT use Ethyl or high octane gaso*line. Be certain container is clean and free fromrust or foreign particles Never use gasoline thatmay be stale from long periods of storage in thecontainer Replace fuel cap.

WARNING: DO NOT FILL CLOSER THAN1/2 INCH OF TOP OF FUEL TANK TOPREVENT SPILLS AND TO ALLOW FORFUEL EXPANSION. IF GASOLINE ISACCIDENTLY SPILLED, MOVE CHIPPER-SHREDDER AWAY FROM AREA OFSPILL. AVOID CREATING ANY SOURCEOF IGNITION UNTIL GASOLINE VAPORSHAVE DISAPPEARED.

Check the fuel level periodically to avoid running outof gasoline while operating the chipper-shredder. Ifthe unit runs out of gas as it is shredding or chipping,it may be necessary to unclog the unit before it can berestarted. Refer to "Removing the Flail Screen" inSERVICE AND ADJUSTMENT section

WARNING: EXPERIENCE INDICATES THAT ALCO-HOL BLENDED FUELS (CALLED GASOHOL ORUSING ETHANOL OR METHANOL) CAN ATTRACTMOISTURE WHICH LEADS TO SEPARATION ANDFORMATION OF ACIDS DURING STORAGE.ACIDIC GAS CAN DAMAGE THE FUEL SYSTEMOF AN ENGINE WHILE IN STORAGE. TO AVOIDENGINE PROBLEMS, THE FUEL SYSTEMSHOULD BE EMPTIED OR TREATED WITH FUELSTABILIZER BEFORE STORAGE FOR 30 DAYSOR LONGER. USE FRESH FUEL NEXT SEASON.SEE "STORAGE" SECTION FOR ADDITIONALINFORMATION.

NEVER USE ENGINE OR CARBURETOR CLEAN-ER PRODUCTS IN THE FUEL TANK OR PERMA-NENT DAMAGE MAY OCCUR.

Spark Plug,Wire and Boot

Muffler

StarterHandle

\4 \\

FIGURE 13.

® Attach spark plug wire and rubber boot to sparkplug if necessary. See figure 13.

e Open fuel shut-oft valve by turning in direction ofarrow several turns. See figure 14

® Move choke lever down to CHOKE position

e Place the engine shut*off switch in ON positionSee figure 14

® Grasp starter handle (see figure 13) and pull ropeout slowly until engine reaches start of compres-sion cycle (rope will pull slightly harder at thispoint) Let the rope rewind slowly

NOTE: A noise will be heard when finding the start ofthe compression cycle. This noise is caused by theflails and fingers which are part of the shredding mech-anism falling into place, and should be expected Inaddition, the flails and finger's will be noisy after theengine is started, until the impeller reaches full speed

e Pull rope with a rapid, continuous, full arm strokeKeep a firm grip on start handle Let rope rewindslowly. Do not let starter handle snap back againststarter

e Repeat preceding two instructions until enginefires. When engine starts, move choke lever onengine halfway between CHOKE and RUN.

NOTE: If engine does not fire after three attempts,move choke lever halfway between CHOKE and RUNposition and try again. See figure 14.

Fuel Shut=OffValve

To

."°oChoke "" "

Choke Lever Engine Shut-OffSwitch

FIGURE 14.

TO STARTENGINE

_ WARNING: BE SURE NO ONE OTHERTHAN THE OPERATOR iS STANDINGNEAR THE CHIPPER-SHREDDER WHILESTARTING OR OPERATING. DO NOTOPERATE THIS CHIPPER-SHREDDERUNLESS THE CHUTE DEFLECTOR HASBEEN PROPERLY INSTALLED AND ISSECURED WITH THE HAND KNOBS.

10

TO STOPENGINEe Move engine shut-oft switch to OFF position See

figure 14.

® Disconnect spark plug wire and move away fromspark plug to prevent accidental starting whileequipment is unattended

® Close fuel shut-off valve when equipment is not inuse to prevent fuel leakage.

CUSTOMER RESPONSDBnLITIES

MAINTENANCE SCHEDULE ,/___//_O_/

FILL IN DATES /_ ,/ _/ _ / ,_/a,,o_/^_,co/.sREGULAR SERVICE ! / / / SERVICE....... DATESF-

Oil Pivot Points _/

O Clean Shredder q _1rt

Check Engine Oil _/

Change Engine Oil _] _/

Service Air Cleaner _/

z Clean Engine Cylinder _/ _/

Spark Plug "4 _/

Muffler _/

_/ CHECK

GENERALRECOMMENDATIONSWARNING: ALWAYS STOP THE ENGINEAND DISCONNECT THE SPARK PLUGWIRE BEFORE PERFORMING ANYMAINTENANCE OR ADJUSTMENTS.

e Periodically check all fasteners and be sure theyare tighL

e Follow the Maintenance Schedule above

CHIPPER-SHREDDERLLIBRICATION

Lubricate the pivot paints on the release bar, hopperassembly, chute deflector and chipper chute once aseason using a light oil

ENGINEENGINE OIL

Only use high quality detergent oil rated with API ser-vice classification SG Select the oil's viscosity gradeaccording 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 consumptionwhen 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 someoil--therefore, check engine oil level regularly approx-imately every five hours of operation and before eachusage Stop engine and wait several minutes beforechecking oil level. With engine level, the oil must be toFULL mark on dipstick (refer to figure 12). Changeengine oil after the first five hours of operation, andevery twenty-five hours thereafter.

11

To Drain Oil:

e Drain oil while engine is warm

a_ Remove oil drain plug Refer to figure 11. Catchoil in a suitable container

b When engine is drained of all oil, replace drainplug securely.

® Refill with fresh oil Refer to GAS AND OIL FILL-UP section,

e Replace dipstick.

AIRCLEANERTheair cleanerpreventsdamagingdirt, dust,etc.,fromenteringthecarburetorandbeingforcedintotheengine and is important to engine life and per-formanceNever run your engine without air cleaner com-pletely assembled.To Service Air' Cleaner:Service pre-cleaner after every 25 hours of use, or atleast once a season. Service cartridge every 100hours 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-cleanerby sliding it off the cartridge Wash in liquid deter-gent and water. Squeeze dry in a clean clothSaturate 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 Cleanby 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 causecartridge 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 debhswith a cloth or brush. Cleaning with a forceful spray ofwater 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 areasshown in figure 17 to avoid overspeeding, overheatingand engine damage. Clean more often if necessary.

WARNING: PERIODICALLY CLEAN MUF-FLER AREA TO REMOVE ALL GRASS,DIRT AND COMBUSTIBLE DEBRIS.

LEANINGThe chipper-shredder may be cleaned by runningwater from a hose through the hopper assemblyand chipper chute with the engine running. Allowthe chipper-shredder to dry thoroughly.

e Wash the bag periodically with water. Allow to drythoroughly 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 resetto .030" at least once a season or' every 50 hours ofoperation. See figure 18. Spark plug replacement isrecommended at the start of each season. Refer toengine parts list for correct spark plug type.

NOTE: Do not sandblast spark plug Spark plugshould be cleaned by scraping or wire brushing andwashing with a commercial solvent..

.030" Feeler Gau

FIGURE 15.

FUEL FILTER

Your engine is equipped with a replaceable in-line fuelfilter. Replace the fuel filter every season. See figure16 Refer to engine parts list for' correct replacementfilter,

FIGURE 16.

12

PlugFIGURE 18.

MUFFLERDo not operate the chipper-shredder without a muffleror tamper' with the exhaust system Damaged mufflersor spark arresters could create a fire hazard. Inspectperiodically, and replace if necessary. If your engineis equipped with a spark arrester screen assembly,remove every 50 hours for cleaning and inspection.Replace if damaged.

STORAGE

® Drain the fuel tankPrepare your chipper-shredder for storage at the endof the season or if the unit will not be used for 30 daysor more.

WARNING: NEVER STORE MACHINEWITH FUEL IN THE FUEL TANK INSIDEOF BUILDING WHERE FUMES MAYREACH AN OPEN FLAME OR SPARK, ORWHERE IGNITION SOURCES AREPRESENT SUCH AS HOT WATER ANDSPACE HEATERS, FURNACES, CLOTHESDRYERS, STOVES, ELECTRIC MOTORS,ETC.

NOTE: A yearly check-up by your local Sears ServiceCenter is a good way to make certain your chipper-shredder will provide maximum performance for thenext season

CHIPPER-SHREDDERe Clean the chipper-shredder thoroughly.

® Wipe unit with an oiled rag to prevent rust (use alight oil or silicone)

ENGINEIMPORTANT: IT IS IMPORTANT TO PREVENTGUM DEPOSITS FROM FORMING IN ESSENTIALFUEL SYSTEM PARTS SUCH AS CARBURETOR,FUEL FILTER, FUEL HOSE, OR TANK DURINGSTORAGE. ALSO, EXPERIENCE INDICATES THATALCOHOL BLENDED FUELS (CALLED GASOHOLOR USING ETHANOL OR METHANOL) CANATTRACT 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 andcarburetor are empty

e Never use engine or carburetor cleaner products inthe fuel tank or permanent damage may occur

e Use fresh fuel next season.

NOTE: Fuel stabilizer is an acceptable alternative inminimizing the formation of fuel gum deposits duringstorage. Add stabilizer to gasoline in fuel tank or stor-age container. Always follow the mix ratio found onstabilizer container Run engine at least 10 minutesafter adding stabilizer to allow the stabilizer to reachthe carburetor. Do not drain the gas tank and carbure-tor if using fuel stabilizer

e Drain all the oil from the crankcase (this should bedone after the engine has been operated and is stillwarm) and refill the crankcase with fresh oil

• If you have drained the fuel tank, protect the insideof the engine as follows Remove spark plug, pourapproximately 1/2 ounce (approximately one table-spoon) of engine oil into cylinder and crank slowlyto distribute oil. Replace spark plug.

OTHERe Do not store gasoline from one season to another

® Replace your gasoline can if your can starts to rustRust and/or dirt in your gasoline will cause problems

e Store unit in a clean, dry area Do not store next tocorrosive materials, such as fertilizer

NOTE: If storing in an unventilated or metal storageshed, be certain to rustproof the equipment by coatingwith a light oil or silicone.

SERVRCE & ADJUSTMENT

OWARNING: ALWAYS STOP ENGINE ANDDISCONNECT SPARK PLUG WIRE ANDMOVE IT AWAY FROM SPARK PLUGBEFORE PERFORMING ANY ADJUST TMENTS OR REPAIRS.

REMOVINGTHEFLAILSCREENIf the discharge area becomes clogged, remove theflail screen and clean area as follows

e Stop the engine, make certain the chipper-shredderhas come to a complete stop and disconnect sparkplug wire from the spark plug before unclogging thechute

O

Q

Loosen the two hand knobs on each side of thechute deflector. Lift the chute deflector up, and tie itout of the way.

Remove two hairpin clips from the clevis pins whichextend through the housing. Remove the clevispins Lift the flail screen from inside the housing.See figure 19_

Clean the screen by scraping or washing withwater. Reinstall the screen

NOTE: Be certain to reassemble the flail screen with

the curved side clown as shown in figure 19.

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ChuteDeflector. Hairpin _

Clips,ClevisPins

--_HexNuts

Washers Screen

ChipperChute

FIGURE 19. Hand Knobs

SHARPENINGORREPLACINGTHEBLADESCHIPPER BLADES® Disconnect spark plug wire and move it away from

spark plug

e Remove the flail screen as instructed in previoussection

e Remove the chipper chute by removing three hexnuts and washers. A 1/2" wrench is required_ Seefigure 19.

NOTE: When reassembling, the cupped washer goeson the bottom of the chipper chute with the cuppedside against the chute.

e Rotate the impeller assembly by hand until youlocate one of the chipper blades in the chipperchute 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 sharpedge facing the direction shown in figure 19 (sharpedge is assembled toward the slotted opening in theimpeller assembly).

SHREDDING BLADE

The shredding blade may be removed for sharpeningor replacement as follows.

e Disconnect spark plug wire and move it away fromspark 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" wrenchSeparate 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 theuniL The back-up plate may be reversed to provide anew cutting edge.

AllenScrews

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TorqueWrench

FIGURE 21.

e Loosen the two hand knobs and cupped washerswhich secure the chute deflector, and raise thechute deflector

e Insert a 1/2" or 3/4" diameter pipe through the flailscreen into the impeller to keep it from turning, orremove 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, lockwasher and flat washer.

NGTE:Usecautionwhenremovingthe blade to avoidcontacting the weld bolts on the housing_

e When sharpening the blade, follow the originalangle of grind as a guide. It is extremely importantthat each cutting edge receives an equal amount ofgrinding to prevent an unbalanced blade. An unbal-anced blade will cause excessive vibration whenrotating at high speeds and may cause damage tothe unit

e The blade can be tested for balance by balancing iton a round shaft screwdriver or nail. Remove metalfrom the heavy side until it is balanced evenly. Seefigure 22_

Nail_\ _ / \

FIGURE 22.

e When reassembling the blade, tighten to between550 and 650 inch pounds, or lacking torquewrench, tighten securely

FLAILSThe flails, located inside the housing, may bereversed when they become dull It is suggested thatthis procedure be performed by your nearest SearsService Department

CARBURETORADJUSTMENTWARNING: IF ANY ADJUSTMENTS AREMADE TO THE ENGINE WHILE THE

ENGINE IS RUNNING (E.G. CARBURE-TOR)p KEEP CLEAR OF ALL MOVINGPARTS. BE CAREFUL OF HEATED SUR-FACES AND MUFFLER.

Minor carburetor adjustment may be required to com-pensate for differences in fuel, temperature, altitudeor load

NOTE: A DIRTY AIR CLEANER WILL CAUSEENGINE TO RUN ROUGH. BE CERTAIN AIRCLEANER IS CLEAN AND ATTACHED TO THECARBURETOR 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 ispre-set at the factory and should be changed only bya qualified service technician who has the necessaryequipment

The carburetor may need re-adjusting if engine lackspower or does not idle properly If adjustments areneeded, 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 enginestarts to lose speed (lean mixture). Then slowlyopen needle valve counterclockwise (,'_) untilengine JUST BEGINS to run unevenly. This mix-ture should be rich enough for best performanceunder load

O Rotate throttle counterclockwise (,'_) and holdagainst throttle stop.

If engine idles, no further adjustment is necessary.

If engine idles too fast, turn idle speed adjustingscrew counterclockwise (_) until slower speed isobtained.

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If engine dies, turn idle speed adjusting screw 1/4turn clockwise (_) Place throttle control in FASTposition and restart engine.

Move throttle control to IDLE position. If enginedoes not idle, repeat third stepTest the engine by using the chipper-shredder Ifengine tends to stall or die out, it usually indicatesthat the mixture is slightly lean and it may be nec-essary to open ("_) the needle valve slightly toprovide a richer mixture This richer mixture maycause a slight unevenness in idling.

Idle Speed Adjust _g ScrewThrottle

Idle Mixture

FIGURE 23.

Needle Valve(High Speed)

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ENGINESPEEDYour engine speed has been factory set Do notattempt to increase engine speed or it may result inpersonal injury If you believe the engine is runningtoo fast or too slow, take your chipper-shredder to thenearest SEARS Service Center for repair and adjust-ment

TROUBLE SHOOTING

CORRECTIVE ACTIONPROBLEM POSSIBLE CAUSE(S)

Engine fails to start e Fuel shut-off valve closed.e Fuel tank empty, or stale fuel.e Spark plug wire disconnectede 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 valvee Fill tank with clean, fresi_ fuele Connect wire to spark plug• Clean, adjust gap or replace.

e Connect and tighten spark plug wire• Move choke lever to OFF positione Clean fuel line; fill tank with clean

fresh gasolinee Disconnect fuel line at carburetor to drain fuel

tank Refill with fresh fuel

e Adjust carburetor or contact your SEARSService Center

• Service air cleaner See Customer Responsibilitie. _section of this manual.

• Dirty air cleaner,

Engine overheats • Carburetor not adjusted • Contact your SEARS Service Centerproperly

• Engine oil level low. • Fill crankcase with proper oil.

Too much vibration e Loose parts or damaged • Stop engine immediately and disconnectimpeller, 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 disconnectdischarge spark plug wire. Clean flail screen and inside

of blower housing See Service/Adjustmentssection of this manuel.

e Foreign object lodged in impeller e Stop engine immediately and disconnectspark plug wire. Remove lodged object.

Rate of discharge e Shredding blade and/or chipper • Sharpen or replace shredding and chipperslows considerably or blades dull bladescomposition ofdischarged materialchanges

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 befound on a label attached to the frame

The model number for the engine will be found on tileblower housing of the engine

All parts listed herein may be ordered through Sears,Roebuck and Co. Service Centers and most RetailStores

WHEN ORDERING REPAIR PARTS, ALWAYS GIVETHE FOLLOWING INFORMATION:

*PRODUCT - "8 H.P. Chipper-Shredder"

*MODEL NUMBER - 247.795860247,795861

*ENGINE MODEL NO. - 190412-6143-01190432-6117-01

*PART NUMBER

*PART DESCRIPTION

Your Sears merchandise has added value when youconsider that Sears has service units nationwide

staffed with Sears trained technicians professionaltechnicians specifically trained on Sears prodects,having the parts, tools and the equipment to insurethat we meet our pledge to you../'we service what wesell/'

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