Craftsman 8 Hp Manual

							  
CUSTOMERRESPONSDBnLITIES 
MAINTENANCESCHEDULE,/___//_O_/ 
FILLINDATES/_,/_/_/,_/a,,o_/^_,co/ 
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REGULARSERVICE 
!///SERVICE.......DATES 
F- 
OilPivotPoints_/ 
OCleanShredderq_1 
rt 
CheckEngineOil_/ 
ChangeEngineOil_]_/ 
ServiceAirCleaner_/ 
zCleanEngineCylinder_/_/ 
SparkPlug4_/ 
Muffler_/ 
_/CHECK 
GENERALRECOMMENDATIONS 
WARNING:ALWAYSSTOPTHEENGINE 
ANDDISCONNECTTHESPARKPLUG 
WIREBEFOREPERFORMINGANY 
MAINTENANCEORADJUSTMENTS. 
ePeriodicallycheckallfastenersandbesurethey 
aretighL 
eFollowtheMaintenanceScheduleabove 
CHIPPER-SHREDDER 
LLIBRICATION 
Lubricatethepivotpaintsonthereleasebar,hopper 
assembly,chutedeflectorandchipperchuteoncea 
seasonusingalightoil 
ENGINE 
ENGINEOIL 
OnlyusehighqualitydetergentoilratedwithAPIser- 
viceclassificationSGSelecttheoilsviscositygrade 
accordingtoyourexpectedoperatingtemperature 
Colder-._32°FWarmer 
5W30MSAE30 NOTE:Althoughmulti-viscosityoils(SE30,10W30, 
etc)improvestartingincoldweather,thesemulti-vis- 
cosityoilswillresultinincreasedoilconsumption 
whenusedabove32°FCheckyouroillevelmorefre- 
quentlytoavoidpossibleenginedamagefromrun- 
ninglowonoil 
Yourfour-cycleenginewillnormallyconsumesome 
oil--therefore,checkengineoillevelregularlyapprox- 
imatelyeveryfivehoursofoperationandbeforeeach 
usageStopengineandwaitseveralminutesbefore 
checkingoillevel.Withenginelevel,theoilmustbeto 
FULLmarkondipstick(refertofigure12).Change 
engineoilafterthefirstfivehoursofoperation,and 
everytwenty-fivehoursthereafter. 
11 ToDrainOil: 
eDrainoilwhileengineiswarm 
a_RemoveoildrainplugRefertofigure11.Catch 
oilinasuitablecontainer 
bWhenengineisdrainedofalloil,replacedrain 
plugsecurely. 
®RefillwithfreshoilRefertoGASANDOILFILL- 
UPsection, 
eReplacedipstick.  
						

							  
AIRCLEANER 
Theaircleanerpreventsdamagingdirt,dust,etc., 
fromenteringthecarburetorandbeingforcedintothe 
engineandisimportanttoenginelifeandper- 
formance 
Neverrunyourenginewithoutaircleanercom- 
pletelyassembled. 
ToServiceAirCleaner: 
Servicepre-cleanerafterevery25hoursofuse,orat 
leastonceaseason.Servicecartridgeevery100 
hoursofuse,oratleastonceaseason.Servicepre- 
cleanerandcartridgemoreoftenunderdustycondi- 
tions. 
eRemovewingnutandcover 
Toservicefoampre-cleaner:Removepre-cleaner 
byslidingitoffthecartridgeWashinliquiddeter- 
gentandwater.Squeezedryinacleancloth 
Saturateinengineoil.Squeezeinaclean, 
absorbentclothtoremoveallexcessoilIfpre- 
cleanerisverydirty,replaceit.. 
@ 
Toservicecartridge:Removecartridgebyremov- 
ingwingnutandliftingoffcupandcartridgeClean 
bytappinggentlyonaflatsurface.Ifverydirty, 
replace..Donotoilcartridge 
NOTE:Donotusepetroleumsolventsleg.kerosene) 
orpressurizedairtocleancartridgeTheywillcause 
cartridgetodeteriorate. 
•Reinstallcartridge,cup,pre-cleanerandcover. 
•Fastenwingnutssecurely. 
Foam 
=re-Cleaner 
WingNut 
Cup CLEANENGINE. 
Cleanengineperiodically_Removedirtanddebhs 
withaclothorbrush.Cleaningwithaforcefulsprayof 
waterisnotrecommendedaswatercouldcontami- 
natethefuelsystem 
Yearlyorevery25hours,whicheveroccursfirst, 
removetheblowerhousingandcleantheareas 
showninfigure17toavoidoverspeeding,overheating 
andenginedamage.Cleanmoreoftenifnecessary. 
WARNING:PERIODICALLYCLEANMUF- 
FLERAREATOREMOVEALLGRASS, 
DIRTANDCOMBUSTIBLEDEBRIS. 
LEANING 
Thechipper-shreddermaybecleanedbyrunning 
waterfromahosethroughthehopperassembly 
andchipperchutewiththeenginerunning.Allow 
thechipper-shreddertodrythoroughly. 
eWashthebagperiodicallywithwater.Allowtodry 
thoroughlyintheshade.Donotuseheat. 
/I_[-_F]I_-_.._r__CleanOut 
  cha.and 
FIGURE17. 
SPARKPLUG 
Thesparkplugshouldbecleanedandthegapreset 
to.030atleastonceaseasonorevery50hoursof 
operation.Seefigure18.Sparkplugreplacementis 
recommendedatthestartofeachseason.Referto 
enginepartslistforcorrectsparkplugtype. 
NOTE:DonotsandblastsparkplugSparkplug 
shouldbecleanedbyscrapingorwirebrushingand 
washingwithacommercialsolvent.. 
.030FeelerGau 
FIGURE15. 
FUELFILTER 
Yourengineisequippedwithareplaceablein-linefuel 
filter.Replacethefuelfiltereveryseason.Seefigure 
16Refertoenginepartslistforcorrectreplacement 
filter, 
FIGURE16. 
12 Plug 
FIGURE18. 
MUFFLER 
Donotoperatethechipper-shredderwithoutamuffler 
ortamperwiththeexhaustsystemDamagedmufflers 
orsparkarresterscouldcreateafirehazard.Inspect 
periodically,andreplaceifnecessary.Ifyourengine 
isequippedwithasparkarresterscreenassembly, 
removeevery50hoursforcleaningandinspection. 
Replaceifdamaged.  
						

							  
STORAGE 
®Drainthefueltank  Prepareyourchipper-shredderforstorageattheend 
oftheseasonoriftheunitwillnotbeusedfor30days 
ormore. 
WARNING:NEVERSTOREMACHINE  WITHFUELINTHEFUELTANKINSIDE 
OFBUILDINGWHEREFUMESMAY 
REACHANOPENFLAMEORSPARK,OR 
WHEREIGNITIONSOURCESARE 
PRESENTSUCHASHOTWATERAND 
SPACEHEATERS,FURNACES,CLOTHES 
DRYERS,STOVES,ELECTRICMOTORS, 
ETC. 
NOTE:Ayearlycheck-upbyyourlocalSearsService 
Centerisagoodwaytomakecertainyourchipper- 
shredderwillprovidemaximumperformanceforthe 
nextseason 
CHIPPER-SHREDDER 
eCleanthechipper-shredderthoroughly. 
®Wipeunitwithanoiledragtopreventrust(usea 
lightoilorsilicone) 
ENGINE 
IMPORTANT:ITISIMPORTANTTOPREVENT 
GUMDEPOSITSFROMFORMINGINESSENTIAL 
FUELSYSTEMPARTSSUCHASCARBURETOR, 
FUELFILTER,FUELHOSE,ORTANKDURING 
STORAGE.ALSO,EXPERIENCEINDICATESTHAT 
ALCOHOLBLENDEDFUELS(CALLEDGASOHOL 
ORUSINGETHANOLORMETHANOL)CAN 
ATTRACTMOISTUREWHICHLEADSTOSEPARA- 
TIONANDFORMATIONOFACIDSDURINGSTOR- 
AGE.ACIDICGASCANDAMAGETHEFUELSYS- 
TEMOFANENGINEWHILEINSTORAGE ®Starttheengineandletitrununtilthefuellinesand 
carburetorareempty 
eNeveruseengineorcarburetorcleanerproductsin 
thefueltankorpermanentdamagemayoccur 
eUsefreshfuelnextseason. 
NOTE:Fuelstabilizerisanacceptablealternativein 
minimizingtheformationoffuelgumdepositsduring 
storage.Addstabilizertogasolineinfueltankorstor- 
agecontainer.Alwaysfollowthemixratiofoundon 
stabilizercontainerRunengineatleast10minutes 
afteraddingstabilizertoallowthestabilizertoreach 
thecarburetor.Donotdrainthegastankandcarbure- 
torifusingfuelstabilizer 
eDrainalltheoilfromthecrankcase(thisshouldbe 
doneaftertheenginehasbeenoperatedandisstill 
warm)andrefillthecrankcasewithfreshoil 
•Ifyouhavedrainedthefueltank,protecttheinside 
oftheengineasfollowsRemovesparkplug,pour 
approximately1/2ounce(approximatelyonetable- 
spoon)ofengineoilintocylinderandcrankslowly 
todistributeoil.Replacesparkplug. 
OTHER 
eDonotstoregasolinefromoneseasontoanother 
®Replaceyourgasolinecanifyourcanstartstorust 
Rustand/ordirtinyourgasolinewillcauseproblems 
eStoreunitinaclean,dryareaDonotstorenextto 
corrosivematerials,suchasfertilizer 
NOTE:Ifstoringinanunventilatedormetalstorage 
shed,becertaintorustprooftheequipmentbycoating 
withalightoilorsilicone. 
SERVRCE&ADJUSTMENT 
O  WARNING:ALWAYSSTOPENGINEAND 
DISCONNECTSPARKPLUGWIREAND 
MOVEITAWAYFROMSPARKPLUG 
BEFOREPERFORMINGANYADJUSTT 
MENTSORREPAIRS. 
REMOVINGTHEFLAILSCREEN 
Ifthedischargeareabecomesclogged,removethe 
flailscreenandcleanareaasfollows 
eStoptheengine,makecertainthechipper-shredder 
hascometoacompletestopanddisconnectspark 
plugwirefromthesparkplugbeforeuncloggingthe 
chute O 
Q Loosenthetwohandknobsoneachsideofthe 
chutedeflector.Liftthechutedeflectorup,andtieit 
outoftheway. 
Removetwohairpinclipsfromtheclevispinswhich 
extendthroughthehousing.Removetheclevis 
pinsLifttheflailscreenfrominsidethehousing. 
Seefigure19_ 
Cleanthescreenbyscrapingorwashingwith 
water.Reinstallthescreen 
NOTE:Becertaintoreassembletheflailscreenwith 
thecurvedsideclownasshowninfigure19. 
13  
						

							  
Chute 
Deflector. 
Hairpin_ 
Clips, 
Clevis 
Pins 
--_Hex 
Nuts 
Washers 
Screen 
Chipper 
Chute 
FIGURE19. HandKnobs 
SHARPENINGORREPLACINGTHEBLADES 
CHIPPERBLADES 
®Disconnectsparkplugwireandmoveitawayfrom 
sparkplug 
eRemovetheflailscreenasinstructedinprevious 
section 
eRemovethechipperchutebyremovingthreehex 
nutsandwashers.A1/2wrenchisrequired_See 
figure19. 
NOTE:Whenreassembling,thecuppedwashergoes 
onthebottomofthechipperchutewiththecupped 
sideagainstthechute. 
eRotatetheimpellerassemblybyhanduntilyou 
locateoneofthechipperbladesinthechipper 
chuteopening.Removetheblade,usinga3/16 
allenwrenchontheoutsideofthebladeand1/2 
wrenchontheimpellerassembly(insidethehous- 
ing).Seefigure20_ 
•Removetheotherbladeinthesamemanner 
FIGURE20. ReplaceorsharpenbladesIfsharpening,makeogr- 
taintoremoveanequalamountfromeachblade. 
Reassembleinreverseorder. 
Makecertainbladesarereassembledwiththesharp 
edgefacingthedirectionshowninfigure19(sharp 
edgeisassembledtowardtheslottedopeninginthe 
impellerassembly). 
SHREDDINGBLADE 
Theshreddingblademayberemovedforsharpening 
orreplacementasfollows. 
eDisconnectsparkplugwireandmoveitawayfrom 
sparkplug_ 
eLowerthehopperassemblyBlockupthehousing_ 
Seefigure21. 
eRemovethesixhexlocknutsandlockwashers 
fromthehousingweldboltsusinga1/2wrench 
Separatethechipper-shredderintotwohalves 
eRemovetheback-upplate. 
NOTE:Whenreassembling,makecertaintheopen- 
ingontheback-upplateistowardthebottomofthe 
uniLTheback-upplatemaybereversedtoprovidea 
newcuttingedge. 
Allen 
Screws 
14 Torque 
Wrench 
FIGURE21. 
eLoosenthetwohandknobsandcuppedwashers 
whichsecurethechutedeflector,andraisethe 
chutedeflector 
eInserta1/2or3/4diameterpipethroughtheflail 
screenintotheimpellertokeepitfromturning,or 
removetheflailscreenandinsertapieceofwood 
(2x4)intothechuteopening. 
eRemovethetwooutsidescrewsontheblade, 
usinga3/16allenwrenchanda1/2wrench. 
eRemovethebladebyremovingthecenterbolt,lock 
washerandflatwasher.  
						

							  
NGTE:Usecautionwhenremovingthebladetoavoid 
contactingtheweldboltsonthehousing_ 
eWhensharpeningtheblade,followtheoriginal 
angleofgrindasaguide.Itisextremelyimportant 
thateachcuttingedgereceivesanequalamountof 
grindingtopreventanunbalancedblade.Anunbal- 
ancedbladewillcauseexcessivevibrationwhen 
rotatingathighspeedsandmaycausedamageto 
theunit 
eThebladecanbetestedforbalancebybalancingit 
onaroundshaftscrewdriverornail.Removemetal 
fromtheheavysideuntilitisbalancedevenly.See 
figure22_ 
Nail_\_/\ 
FIGURE22. 
eWhenreassemblingtheblade,tightentobetween 
550and650inchpounds,orlackingtorque 
wrench,tightensecurely 
FLAILS 
Theflails,locatedinsidethehousing,maybe 
reversedwhentheybecomedullItissuggestedthat 
thisprocedurebeperformedbyyournearestSears 
ServiceDepartment 
CARBURETORADJUSTMENT 
WARNING:IFANYADJUSTMENTSARE 
MADETOTHEENGINEWHILETHE 
ENGINEISRUNNING(E.G.CARBURE- 
TOR)pKEEPCLEAROFALLMOVING 
PARTS.BECAREFULOFHEATEDSUR- 
FACESANDMUFFLER. 
Minorcarburetoradjustmentmayberequiredtocom- 
pensatefordifferencesinfuel,temperature,altitude 
orload 
NOTE:ADIRTYAIRCLEANERWILLCAUSE 
ENGINETORUNROUGH.BECERTAINAIR 
CLEANERISCLEANANDATTACHEDTOTHE 
CARBURETORBEFOREADJUSTINGCARBURE- 
TOR.DONOTMAKEUNNECESSARYADJUST- 
MENTSFACTORYSETTINGSARESATISFACTO- 
RYFORMOSTAPPLICATIONSANDCONDITIONS 
NeverattempttochangemaximumenginespeedItis 
pre-setatthefactoryandshouldbechangedonlyby 
aqualifiedservicetechnicianwhohasthenecessary 
equipment Thecarburetormayneedre-adjustingifenginelacks 
powerordoesnotidleproperlyIfadjustmentsare 
needed,proceedasfollows 
eCloseneedlevalve(seefigure23)clockwise 
((_)fingertightonly.Forcingmaycausedamage. 
Thenopen1-1/2turnscounterclockwise(,_) 
®Startengineandallowtowarmforfiveminutes 
eCloseneedlevalveclockwise(,-_)untilengine 
startstolosespeed(leanmixture).Thenslowly 
openneedlevalvecounterclockwise(,_)until 
engineJUSTBEGINStorununevenly.Thismix- 
tureshouldberichenoughforbestperformance 
underload 
O 
Rotatethrottlecounterclockwise(,_)andhold 
againstthrottlestop. 
Ifengineidles,nofurtheradjustmentisnecessary. 
Ifengineidlestoofast,turnidlespeedadjusting 
screwcounterclockwise(_)untilslowerspeedis 
obtained. 
O Ifenginedies,turnidlespeedadjustingscrew1/4 
turnclockwise(_)PlacethrottlecontrolinFAST 
positionandrestartengine. 
MovethrottlecontroltoIDLEposition.Ifengine 
doesnotidle,repeatthirdstep 
Testtheenginebyusingthechipper-shredderIf 
enginetendstostallordieout,itusuallyindicates 
thatthemixtureisslightlyleananditmaybenec- 
essarytoopen(_)theneedlevalveslightlyto 
providearichermixtureThisrichermixturemay 
causeaslightunevennessinidling. 
IdleSpeedAdjust_gScrew 
Throttle 
IdleMixture 
FIGURE23. NeedleValve 
(HighSpeed) 
15 ENGINESPEED 
YourenginespeedhasbeenfactorysetDonot 
attempttoincreaseenginespeedoritmayresultin 
personalinjuryIfyoubelievetheengineisrunning 
toofastortooslow,takeyourchipper-shreddertothe 
nearestSEARSServiceCenterforrepairandadjust- 
ment  
						

							  
TROUBLESHOOTING 
CORRECTIVEACTION 
PROBLEMPOSSIBLECAUSE(S) 
EnginefailstostarteFuelshut-offvalveclosed. 
eFueltankempty,orstalefuel. 
eSparkplugwiredisconnected 
eFaultysparkplug. 
Lossofpower;eSparkplugwireloose. 
operationerratic•UnitrunningonCHOKE 
eBlockedfuellineorstalefuel. 
eWaterordirtinfuelsystem 
eCarburetoroutofadjustment eOpenfuelshut-offvalve 
eFilltankwithclean,fresi_fuel 
eConnectwiretosparkplug 
•Clean,adjustgaporreplace. 
eConnectandtightensparkplugwire 
•MovechokelevertoOFFposition 
eCleanfuelline;filltankwithclean 
freshgasoline 
eDisconnectfuellineatcarburetortodrainfuel 
tankRefillwithfreshfuel 
eAdjustcarburetororcontactyourSEARS 
ServiceCenter 
•ServiceaircleanerSeeCustomerResponsibilitie._ 
sectionofthismanual.  •Dirtyaircleaner, 
Engineoverheats•Carburetornotadjusted•ContactyourSEARSServiceCenter 
properly 
•Engineoillevellow.•Fillcrankcasewithproperoil. 
ToomuchvibrationeLoosepartsordamaged•Stopengineimmediatelyanddisconnect 
impeller,sparkplugwireTightenallboltsandnuts. 
Makeallnecessaryrepair&Ifvibrationcontinues. 
haveunitservicedbyaSEARSServiceCenter. 
Unitdoesnot•DischargechutecloggedeStopengineimmediatelyanddisconnect 
dischargesparkplugwire.Cleanflailscreenandinside 
ofblowerhousingSeeService/Adjustments 
sectionofthismanuel. 
eForeignobjectlodgedinimpellereStopengineimmediatelyanddisconnect 
sparkplugwire.Removelodgedobject. 
RateofdischargeeShreddingbladeand/orchipper•Sharpenorreplaceshreddingandchipper 
slowsconsiderablyorbladesdullblades 
compositionof 
dischargedmaterial 
changes 
NOTE:Forrepairsbeyondtheminoradjustmentslistedabove,pleasecontactyournearestSEARSServiceCenter. 
HOWTOORDERREPLACEMENTPARTS 
Eachchipper-shredderhasitsownmodelnumber. 
Eachenginehasitsownmodelnumber. 
Themodelnumberforyourchipper-shredderwillbe 
foundonalabelattachedtotheframe 
Themodelnumberfortheenginewillbefoundontile 
blowerhousingoftheengine 
AllpartslistedhereinmaybeorderedthroughSears, 
RoebuckandCo.ServiceCentersandmostRetail 
Stores 
WHENORDERINGREPAIRPARTS,ALWAYSGIVE 
THEFOLLOWINGINFORMATION: 
*PRODUCT-8H.P.Chipper-Shredder 
*MODELNUMBER-247.795860 
247,795861 *ENGINEMODELNO.-190412-6143-01 
190432-6117-01 
*PARTNUMBER 
*PARTDESCRIPTION 
YourSearsmerchandisehasaddedvaluewhenyou 
considerthatSearshasserviceunitsnationwide 
staffedwithSearstrainedtechniciansprofessional 
techniciansspecificallytrainedonSearsprodects, 
havingtheparts,toolsandtheequipmenttoinsure 
thatwemeetourpledgetoyou../weservicewhatwe 
sell/ 
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