Craftsman 50 Hp Snow Thrower Owners Manual
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SRVICAN
TOADJUSTTHEBELTGUIDES
e
e
e
e
@
@
o
®
O Disconnectthesparkplugwire,
Removethebeltcoverbyremovingthescrewand
flatwasherontheleftandrighthandsides,SeeFig,27
page20,
Engagetheaugerdriveclulchlever
Measurethedistancebetweenthebeltguidesandthe
belt(SeeFig.29),Thedistanceshouldbe3/32for
eachguide.,
ifadjustmentisnecessary,loosenthebeltguide
mountingbolts°Movethebeltguidestothecorrect
position.Tightenthemountingbolts
Reinstallthebellcover,
Ifadjustmentisnecessary,loosenthebeltguide
mountingbolts,Movethebeltguidestothecorrect
position,Tightenthemountingbolts
Reinstallthebeltcover
Reconnectthesparkplugwire.,
....__,,_f..._./1AUGERDRIVEPULLEY
BELTO0,D
wtg.,.o.,),=,NO.
if.._.L_.._.._IMPELLER
It`{--)PULLEY
FIG.29
TOADJUSTTHEFRICTIONWHEEL
Ifthesnowthrowerwillnotmoveforward,youneedto
checkthetractiondrivebelt,thetractiondrivecableorthe
frictionwheelIfthefrictionwheeiisdamaged,itwillneed
tobereplaced,SeeToReplaceFrictionWheelpara-
graphonpage22tfthefrictionwheelisnotworn,check
theadjustment,asfollows:
@Disconnectthesparkplugwire,
@Drainthegasolinefromthegastank,
•Standsnowthrowerontheaugerhousingend.
@Removethebottompanel(SeeFig.,30).
•Positiontheshifterleverinfirst(1)gear.
•Notethepositionofthefrictionwheelonthediscdrive
plate,.Therightoutersideofthediscdriveplateshould
be3fromthecenterofthefrictionwheel(SeeFig.
31A),
If3dJustmentIsnecessary:
•Loosenboltsinspeedselectorlever(SeeFig31B) ADJUTM
TS
MOTORMOUNTFRAME
k PANEL
REMOVE
TOP
BOLTS
(EACH
SIDE)
®
O
® AUGER
HOUSING
\
LOOSENBOTTOMBOLTS
(EACHSIDE)(BotlomView)
,Lij/i//J,..................
FIG.30
Movefrictionwheeltoproperpositionasindicatedin
previousstep(Fig°31A).,
Re-tightenbeltsinspeedselectorlevel
Reinstallthebottompanel
FRICTION
DISCDRIVE
PLATE
FIG.31A
SPEEDSELECTORLEVER
BOLTS
TOBE
OOSENED
(RearViewt
FIG.31B
21
.qFRVICFANDA_r}JUSTMENFS FR|CTION WHEELBOLT TOREPLACEFRICTIONWHEEL Ifthesnowthrowerwillnotmoveforward,andthefriction wheeliswornordamaged,youneedtoreplaceitas follows:(Firstallowtheengtnetocool.) AWAYFROMFIREORFLAME,! •Drainthegasolinefromthefueltankbyremovingthe fuellineDrainthefuelandreinstallthefuelline. •Disconnectthesparkplugwire •Standthesnowthrowerupontheaugerhousingend (SeeFig33)., •Rerr_vethebottompanel(SeeFig,,30,page21). ®Removethethree(3)fastenerssecuringthefnction wheeltohub(SeeFig..32)andsetfastenersaside •Removethefourboltssecuringthebearingplates (bothsides) •RemoverightsidebearingplateLeaveHexshaftin originalposition(SeeFig..33). ®RernovefdctionwheetfromhubSlipfrictionwheeloff hexshafttowardsrightside(SeeFig33) •Positionnewfrictionwheelontohub, •InstallbearingplatestooriginalpositionEnsurehex shaftisengagedwithbothbearingplates, •Securebearingplatesusingboltsremovedearlier. •Securefrictionwheeltohubusingfastenersremoved earlier.Ensurehexshaftturnsfreely, NOTE:Ensurefrictionwheelandfrictiondiscarefree fromgreaseoroil. •Replacebottompanel •Lowerthesnowthrowerontothetires LOCKWABHER HUBNUT FIG.32 FRICTION HUB HEX SHAFT BOLT LOCKWASHER HEXSHAFT FASTENERS (screws, IockwashersRING andnuts)PLATES ;\ 0•// i,.................................................................... ous,NG (UNITSTANDINGON AUGERHOUSINGEND) jHi,ll===ul,Jlu FIG.33 22
SECE TOREPLACEAUGERSHEARBOLT ADJUST TS Theaugersaresecuredtotheaugershaftwithspecial bolts(SeeFig°34)thataredesignedtobreak(toprotect themachine)ifanobjectbecomeslodgedintheauger housing.Useofaharderboltwilldestroytheprotection providedbytheshearboll IMPORTANT;TOINSURESAFETYAND PERFORMANCELEVELS,ONLY ORIGINALEQUIPMENTSHEAR BOLTSSHOULDBEUSED,WHEN REPLACINGSHEARBOLTS,BESURE TOREPLACESHEARBOLT SPACERS. Toreplaceabrokenshearbolt,proceedasiollows: ®MovethethrottletoSTOPandturnoffallcontrols, ®Disconnectthesparkplugwire.Besureallmoving partshavestopped. •Removethebrokenshearbolt. •Lubricatetheaugershaftbysquirtingoilintotheshear boltholeintheaugershaftThenrotatetheaugerto distributetheoilontheshaft.. eAligntheholeintheaugerwiththeholeintheauger shaft.Installthenewshearbolt,shearboltspacer,and locknutprovidedinpartsbag @Reconnectthesparkplugwire_ TOADJUSTCARBURETOR Thecarburetor(SeeFig.35andFig37(page25)has beenpre-setatthefactoryandreadjustmentshouldnot benecessary.However,ifthecarburetordoesneedtobe adjusted,proceedasfollows: •Closethehighspeedadjustingscrewbyhand. eDonotover-tighten. @ThenopenitI-1/4to1-1/2turns @Closetheidleadjustingscrewbyhand.Donotover- tighten,. ®Thenopenit1-1/4to1-1/2turns. ®Starttheengineandletitwarmup. @SetthethrottlecontroltoRUNAdjustthehighspeed adjustingscrewInuntiltheenginespeedorsound alters_Adjustthescrewoutuntiltheenginespeed soundalters..Notethedifferencebetweenthetwo limitsandsetthescrewinthemiddleoftherange_ •Lettheenginerunundisturbedfor30secondsafter eachsetlingtoallowtheenginetoreact1otheprevi- ousadjustment. ®SetthethrottlecontrottoIDLE.Adjusttheidleadjust- ingscrewinuntiltheenginespeeddrops,thenadjust thescrewoutuntiltheenginespeeddrops.Notethe differencebetweenthetwolimitsandsetthescrewin themiddleoftherange. AUGER SHAFT FIG,34 jCARBURETOR DLEADJUSTINGSCREW (Closefingertightordy) BOWLDRAIN HIGHSPEEDADJUSTING SCREW (Closefingertightonly) FIG.35 ®Iftheenginetendstostallundertoadordoes notacceteratefromlowspeedtohighspeed properly,adjustthehighspeedscrewoutin1/8turn incrementsuntiltheproblemisresolvedLetthe enginerunfor30secondsbetweensettings.. IMPORTANT:NEVERTAMPERWITHTHEENGINE GOVERNOR,WHICHISFACTORY SETFORPROPERENGINESPEED,. OVER-SPEEDINGTHEENGINE ABOVETHEFACTORYHIGHSPEED SETTINGCANBEDANGEROUS, IFYOUTHINKTHEENGINE- GOVERNEDHIGHSPEEDNEEDS ADJUSTING,CONTACTYOUR NEARESTSEARSSERVICECENTER, WHICHHASTHEPROPER EQUIPMENTANDEXPERIENCETO MAKEANYNECESSARY ADJUSTMENTS 23
TOADJUSTORREPLACE THESPARKPLUG Ifyouhavedifficultystartingyoursnowthrower,youmay needtoadjustorreplacethesparkplugFollowthe instructionsbelow° Replacethesparkplugiftheelectrodesarepittedor burnedoriftheporcelainiscracked. TOADJUST: •Cleanthesparkplugbycarefullyscrapingtheelec- trodes(donotsandblastoruseawirebrush) •Besurethesparkplugiscleanandfreeofforeign material,Checktheelectrodesgap(SeeFig36)with awirefeelergaugeandresetthegapto,030inchif necessary TOREPLACE: •Ifyouneedanewsparkplug,useonlytheproper replacementsparkplug(Seepage4) •Setthegapto.030. .030GAP FIG.36 •Beforeinstallingthesparkplug,coatitsthreadslightly withoilorgreasetoensureeasyremoval •Tightentheplugfirmlyintotheengine. •Ifatorquewrenchisavailable,torquetheplugto18to 23ft-lbs, 24
II_III_IUIllUIIUI,IIIIIILU_JIILI,IllLI,II CAUTION:NEVERSTOREYOURSNOW THROWERINDOORSORINANEN- CLOSED,POORLYVENTILATEDAREA IFGASOLINEREMAINSINTHETANK.FUMES MAYREACHANOPENFLAME,SPARKORPI- LOTLIGHTFROMAFURNACE,WATERHEATER, CLOTHESDRYER,CIGARETTE,ETCo STORAGE Topreventenginedamage(ifsnowthrowerisnotused formorethan30days)followthestepsbelow, SNOWTHROWERSTORAGE @Thoroughlycleanthesnowthrower.. @Lubricatealllubricationpoints(seetheCustomer Responsibilitiessectiononpages15-17). @Besurethatallnuts,boltsandscrewsaresecurely fastened.,inspectallvisiblemovingpartsfordam- age,breakageandwear.Replaceifnecessary. @Touchupallrustedorchippedpaintsurfaces;sand lightlybeforepainting, eCoverthebaremetalpartsoftheblowerhousing augerandtheimpellerwithrustpreventative,such asaspraylubricant,. NOTE,Ayearlycheckuportune-upbyaSEARSService Centerisagoodwaytoinsurethatyoursnowthrowerwill providemaximumperformanceforthenextseason, ENGINESTORAGE Gasolinemustberemovedortreatedtopreventgum depositsfromforminginthetank,filter,hose,and carburetorduringstorage.Alsoduringstorage,al- coholblendedgasolinethatusesethanolormetha- nol(sometimescalledgasohol)attractswater.Itacts onthegas@linetoformacidswhichdamagethe engine. eToremovegasoline,runtheengineuntilthetankis emptyandtheenginestops,Thendrainremaining gasolinefromcarburetorbypressingupwardon bowldrainlocatedonthebottomofcarburetor(See Fig..37)° ®tfyoudonotwanttoremovegasoline,afuelstabilizer (suchasCraftsmanFuelStabilizerNo33500)may beaddedtoanygasolineleftinthetanktominimize gumdepositsandacids,.Ifthetankisalmostempty, mixstabilizerwithfreshgasolineinaseparatecon- tainerandaddsometothetank,ALWAYSFOLLOW INSTRUCTIONSONSTABILIZERCONTAINER, THENRUNENGINEATLEAST10MINUTESAF- TERSTABILIZERISADDEDTOALLOWMIX- TURETOREACHCARBURETOR.STORESNOW THROWERINASAFEPLACE.SEEWARNING ABOVE. FIG.37 YoucankeepyourengineIngoodoperatingcondi- tionduringstorageby: ®Changingoil(Seepage17). eLubricatingthepiston/cylinderarea,.Thiscanbe donebyfirstremovingthesparkplugandsquirtinga fewdropsofcleanengineoilintothesparkplughole. Thencoverthesparkplugholewitharagtoabsorb oilspray,.Next,rotatetheenginebypullingthestarter ropefullyouttwoorthreetimes.Finally,reinstall sparkplugandattachsparkplugwire. OTHER IMPORTANT: eIfpossible,storeyoursnowthrowerindoorswithgas removedandcoverittogiveprotectionfromdustand dirt. eIfthemachinemustbestoredoutdoors,blockupthe snowthrowertobesuretheentiremachineisoffthe ground. eCoverthesnowthrowerwithasuitableprotective coverthatdoesnotretainmoisture.,Donotuse plasticorvinyl_ NEVERCOVERSNOWTHROWER WHILEENGINEANDEXHAUST AREASARESTILLWARM. 25
TROUBLE Difficultstarting Enginerunserratically _,i,,,Jl,/llJl/,/ii/,Jl,Jl, Enginestalls Enginerunserratically; Lossofpower Excessivevibration Unitfailstopropel Itself Unitfailsto dischargesnow CAUSE Defectivesparkplug Waterordirtinfuelsystem Blockedfuellineorlowonfuet UnitrunningonCHOKE IJJlU Waterordirtinfuelsystem Carburetoroutofadjustment Looseparts;damagedimpelter ,,i,J,l,ll,i,Jml,(i,I,,J,L Drivebeltlooseordamaged incorrectadjustmentoftraction drivecable Wornordamagedfrictionwheel Augerdrivebeltlooseordamaged Augercontrolcablenotadjusted CORRECTION Replacedefectiveplug, Usecarburetorbowldraintoflushandrefilfwithfresh fuel. Cleanfuelline;checkfuelsupply;addfresh fuel(gasdiine/oilmixtureif2cycleengine), MovechokelevertoOFFposition UsecarburetorbowldraintoflushandrefiUwithfresh fuel Adjustcarburetor Stopengineimmediatelyanddisconnectsparkplugwire TightenallboilsandmakeallnecessaryrepairsIfvibration continues,havetheunitservicedbyacompetentrepairman Replacedrivebelt, Adjusttractiondrivecable Replacefrictionwheel Adjustaugerdrivebelt;replaceifdamaged, Adjustaugercontrolcable correctly Shearboltbroken Dischargechuteclogged Foreignobjectlodgedinauger Replaceshearboil Stopengineimmediatelyanddisconnectsparkplugwire Cleandischargechuteandinsideofaugerhousing Stopengineimmediatelyanddisconnectsparkplugwire Removeobjectfromauger 26
CRAFTSMAN22SNOWTHROWER536.886540 HANDLEA_-EMBL¥REPAIRPARTS7 1 ASSEMBLY LEFTSIDE ASSEMBLY RIGHTSIDE 12 _+_2_ t-%,* fI,,l_,,_Mll,, RIGHTSIDELEFTSIDE 16 15 NO Z_ € li 11 PARTNO+ 9552-830 11234 120393 120638 120376 11261 307974 307974 t058 3535 4049 PARTNAME Handle,Upper Screw,Hex,5116-18x2-3/4In Ftatwasher,1!/32tn. Lockwasher;Split5/16In Nut,Hex,5t16-18Thd Stop,Plastic,5/16 TractionDriveLever;LH AugerDriveLever,RH Pin,ClutchHandlePivot Nut,PushOnCap,5116In Bumper,Handle 17 18 5\ .,*. .J ,.+r r_+ REEITEM1,PAGE32 rREF+ NO. 12 13 14 15 16 17 18 19 20 21 PARTNO,+ 1579 579869 1673 1502 308146 580667-830 180077 580639+854 235 330069 PARTNAME Cable,Clutch Spring,DriveClutchLH Spring,AugerClutchRH Nut,HexNFI,1/4-20In Boot,ClutchSpring Handle,Lower- Screw,HHC,5/16-18x3/4In ShiftPlateBracket Screw,HHC,5/16-18x2.00In OwnersManual IndicatesStandardHardwareitems.. 3i8782.314002C 28
CRAFTSMAN22SNOWTHROWER536.886540 CHUTECONTROLRODREPAIRPARTS 5 / I 7 6 \ \.\. \ Ref.,Item-_°1_°!_,.\ Page28 /2 13 Page28 11 19 18 15 18 \ 3 2 4 _R_i !NO.PARTNO. 1325608 2120394 3121224 4104 5307399 6309312 7578159 871457 9148 10308145 11124829 PARTNAME Crank&WormAssembly Flatwasher,406x81x066 Pin,Cotter Cap,Plastic HandleGrip,ChuteControlRod Flatwasher,39x70xO5 Ring,Retainer Bolt,Eye Grommet,EyeBolt Boot,EyeBolt,ChuteCrank Nut,HexJam,3/8-16Thd_ REF.I NO.IPARTNO. 12_309344 _.3.71046 14I1162 !5!7052 16I309059 770993 18|120638 191120376 2OI7055 21_7058 22I120384 PARTNAME Adapter,BoottoHandle Nut,HexNy1318-16Thd. Bracket,ChuteControlRH Bracket,ChuteConlrolLH Bracket,ChuteRotate Bolt,Carriage,5fl6-18x3/4In Lockwasher,Split,5/16In Nut,Hex,5/16-18Thd Rod,ChuteControl Nut,HexJam,1/2-20ThcJ. Lockwasher,Sp!it,1/2in. IndicatesStandardHardwareItems, 29 3190443140080
CRAFTSMAN22SNOWTHROWER536.886540 REE NO. 1 2 3 4 5 6 7 8 9 10 1I t2 13 t4 15 PARTNO, 583124 577400 71371 583219 582960 180077 120393 120638 120376 583!30-854 581395-853 3809 120392! 120380i 120375i PARTNAME Pulley,AugerDrive Screw,Set,5/16-18x1/2In, Key,Square Spacer,Sleeve BalfBearingRetainer Screw,HHC5/16-18x5/8In *Flatwasher,11/32in Lockwasher,Split,5/16In, *Nut,Hex,1/4-20Thd. Housing,AugerAssembly Blade,Scraper,22In Boll,Carriage,1/4-20x5/8In °Flatwasher,9/32x5f8In Lockwasher,Split,1/4In *Nut,Hex,1/4-20Thd !| REE NO,PARTNO. 16305203-830 17305205-830 189524 193943 201502 219517 228619 239357 24305938-854 25305939-854 26323825 271161 2870993 2949562 PARTNAME Auger,AssemblyRH Auger,AssemblyLH Screw,HHC,1/4-20xl-314trt. Spacer,Sleeve *Locknut,Hex,1/4-20Thd Bearing,Flange Nut,WdFI,5/16-18Thd Screw,Wa,5/16-18x3/4In Ptate,AugerSide,LH Plate,AugerSide,RH B01t,Carriage,1/4-20x75In Skid,HeighlAdjust Bolt,Carriage5/16-18x3/4In Bearing IndicatesStandardHardwareitems 319028,313997G 3O