Craftsman 77638, 247.77638 User Manual
Operator's Manual
I:Rl FI'SlVl N
1450 Series Engine
Chipper Shredder
Model No. 247.77638
For questions, call
1-800-4-MY-HOME
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.
Visit our web site: www.craftsman.com
,, SAFETY
* ASSEMBLY
* OPERATION
* MAINTENANCE
* PARTS LIST
. ES PAI'i,IOL
FORM1/O.769-05040
5/4/2009
WarrantyStatement..................................Pac
SafeOperationPractices..........................Pac
SafetyLabels............................................Pac
Assembly..................................................Pac
Operation..................................................Pac
ServiceandMaintenance.........................Pac
Off-SeasonStorage..................................Pac
Whenoperatedand maintainedaccordingtoallsuppliedinstructions,ifthischippershredderfailsdueto a defectin materialorworkmanship
withintwoyearsfromthedate ofpurchase,returnittoany Searsstore,SearsParts&RepairServiceCenter,or otherCraftsmanoutletinthe
UnitedStatesforfreerepair(or replacementif repairprovesimpossible).
Thiswarrantyappliesfor only90daysfromthedateof purchaseif thischippershredderiseverusedfor commercialor rentalpurposes.
ThiswarrantycoversONLYdefectsin materialandworkmanship.SearswillNOTpayfor:
• Expendableitemsthatbecomewornduringnormaluse,includingbutnotlimitedtoblades, sparkplug,aircleaner,flail screenand catcher
bag.
• Standardmaintenanceservicing,oilchanges,ortune-ups.
• Tirereplacementor repaircausedby puncturesfromoutsideobjects,suchasnails,thorns,stumps,or glass.
• Tireor wheelreplacementor repairresultingfromnormalwear,accident,orimproperoperationormaintenance.
• Repairsnecessarybecauseofoperatorabuse,includingbutnot limitedtodamagecausedbyimpactingobjectsthat bendtheframeor
crankshaft,orover-speedingtheengine.
• Repairsnecessarybecauseofoperatornegligence,includingbutnotlimitedto,electricalandmechanicaldamagecausedbyimproper
storage,failureto usethepropergradeand amountofengineoil,or failureto maintaintheequipmentaccordingtothe instructions
containedin theoperator'smanual.
• Engine(fuelsystem)cleaningorrepairscausedbyfuel determinedto becontaminatedor oxidized(stale).Ingeneral,fuelshouldbeused
within30 daysof itspurchasedate.
• Normaldeteriorationandwearoftheexteriorfinishes,or productlabelreplacement.
e2
es3-6
e7
es8-11
es12-13
es14-17
TroubleShooting.......................................Page19
PartsList...................................................Page20-30
LabelMap.................................................Page31
RepairProtectionAgreement...................Page34
Espa_ol.....................................................Page35
ServiceNumbers......................................BackCover
e18
CRAFTSMAN FULLWARRANTY
Thiswarrantyappliesonlywhilethisproductiswithinthe UnitedStates.
Thiswarrantygivesyouspecificlegalrights,andyou mayalsohaveotherrightswhichvaryfromstatetostate.
Sears, Roebuckand Co.,Hoffman Estates,IL60179
EngineSeries: 1450
EngineOilType: SAE30
EngineOilCapacity: 28ounces
Fuel: UnleadedGasoline
SparkPlug: Champion®RC-12YC
SparkPlugGap: .030"
©SearsBrands,LLC 2
Model Number.................................................................
Serial Number .................................................................
Dateof Purchase.............................................................
Recordthemodelnumber,serialnumber
anddateof purchaseabove
Thissymbolpointsout importantsafetyinstructionswhich,if not
followed,couldendangerthe personalsafetyand/orpropertyof
yourselfandothers. Readandfollowall instructionsin thismanual
beforeattemptingtooperatethismachine.Failuretocomplywith
theseinstructionsmayresultin personalinjury.Whenyouseethis
symbol,HEEDITSWARNING!
Thismachinewasbuilttobeoperatedaccordingtothe safeopera-
tionpracticesinthismanual.Aswithanytypeof powerequipment,
carelessnessorerroronthepart oftheoperatorcan resultin
seriousinjury.Thismachineis capableofamputatingfingers,hands,
toesandfeetandthrowingdebris.Failureto observethefollowing
safetyinstructionscouldresultin seriousinjuryordeath.
CALIFORNIA PROPOSITION 65
EngineExhaust,someof itsconstituents,andcertainvehicle
componentscontainoremitchemicalsknownto StateofCalifornia
tocausecancerandbirthdefectsorotherreproductiveharm.
TRAINING
• Read,understand,andfollowall instructionson the machineand
in themanual(s)beforeattemptingtoassembleandoperate.
Keepthis manualina safeplacefor futureand regularreference
andfororderingreplacementparts.
• ReadtheOperator'sManualand followallwarningsand safety
instructions.Failuretodosocanresultin seriousinjurytothe
operatorand/orbystanders.Forquestions,call 1-800-659-5917.
• Befamiliarwithallcontrolsandtheir properoperation.Knowhow
tostopthe machineanddisengagethemquickly.
• Neverallowchildrenunder16yearsofagetooperatethis
machine.Children16andovershouldreadandunderstandthe
instructionsandsafeoperationpracticesin thismanualandon
themachineandbe trainedandsupervisedbyanadult.
• Neverallowadultstooperatethismachinewithoutproper
instruction.
• Keepbystanders,pets,andchildrenatleast75feetfromthe
machinewhileitisin operation.Stopmachineifanyoneenters
thearea.
• Neverrunanengineindoorsor ina poorlyventilatedarea.Engine
exhaustcontainscarbonmonoxide,anodorlessanddeadlygas.
• Donotputhandsandfeetnearrotatingpartsor inthefeeding
chambersanddischargeopening.Contactwiththe rotating
impellercanamputatefingers,hands,andfeet.
• Neverattempttounclogeitherthefeedintakeordischarge
opening,removeor emptybag,or inspectand repairthemachine
whilethe engineisrunning.Shutthe engineoff andwaituntilall
movingpartshavecometo a completestop.Disconnectthe spark
plugwireandgroundit againsttheengine.
Your Responsibility=Restrict theuseofthis powermachineto
personswhoread,understandandfollowthewarningsand instruc-
tionsin thismanualandon themachine.
SAVETHESEINSTRUCTIONS!
PREPARATION
• Thoroughlyinspecttheareawheretheequipmentistobeused.
Removeall rocks,bottles,cans,orotherforeignobjectswhich
couldbepickedupor thrownandcausepersonalinjuryor
damageto themachine.
• Alwayswearsafetyglassesorsafetygogglesduringoperation
andwhileperformingan adjustmentor repair,to protectyour
eyes.Thrownobjectswhichricochetcancauseseriousinjuryto
theeyes.
• Wearsturdy,rough-soledworkshoesandclose-fittingslacksand
shirts.Loosefittingclothesorjewelrycan becaughtin movable
parts.Neveroperatethismachineinbarefeetorsandals.Wear
leatherworkgloveswhenfeedingmaterialinthe chipperchute.
• Beforestarting,checkallboltsandscrewsfor propertightnessto
besurethe machineisinsafeworkingcondition.Also,visually
inspectmachineforany damageatfrequentintervals.
• Maintainor replacesafetyandinstructionslabels,asnecessary.
3
SafeHandling of Gasoline:
Toavoidpersonalinjuryor propertydamageuseextremecarein
handlinggasoline.Gasolineisextremelyflammableandthe vaporsare
explosive.Seriouspersonalinjurycanoccurwhengasolineis spilled
onyourselforyourclotheswhichcan ignite.Washyourskinand
changeclothesimmediately.
• Useonlyan approvedgasolinecontainer.
• Neverfillcontainersinsidea vehicleor ona truckor trailerbed
witha plasticliner.Alwaysplacecontainersonthe groundaway
fromyourvehiclebeforefilling.
• Whenpractical,removegas-poweredequipmentfromthetruck
ortrailerand refuelitontheground.Ifthisisnotpossible,then
refuelsuchequipmentona trailerwitha portablecontainer,rather
thanfroma gasolinedispensernozzle.
• Keepthenozzleincontactwiththerimof thefueltankor
containeropeningatalltimesuntilfuelingiscomplete.Donotuse
a nozzlelock-opendevice.
• Extinguishallcigarettes,cigars,pipesandothersourcesof
ignition.
• Neverfuelmachineindoors.
• Neverremovegas caporaddfuelwhiletheengineishotor run-
ning.Allowenginetocool atleasttwo minutesbeforerefueling.
• Neveroverfillfueltank. Filltankto nomorethan1/2inchbelow
bottomoffillerneckto allowspacefor fuelexpansion.
• Replacegasolinecapandtightensecurely.
• Ifgasolineisspilled,wipeitofftheengineandequipment.Move
unitto anotherarea.Wait5 minutesbeforestartingtheengine.
• Toreducefirehazards,keepmachinefreeof grass,leaves,or
otherdebrisbuild-up.Cleanupoil orfuelspillageand removeany
fuelsoakeddebris.
• Neverstorethemachineorfuelcontainerinsidewherethereisan
openflame,sparkor pilotlightas on awaterheater,spaceheater,
furnace,clothesdryer orothergasappliances.
OPERATION
• Donotputhandsandfeetnearrotatingpartsor in thefeeding
chambersanddischargeopening.Contactwiththe rotating
impellercanamputatefingers,hands,andfeet.
• Beforestartingthemachine,makesurethechipperchute,feed
intake,andcuttingchamberare emptyandfreeofall debris.
• Thoroughlyinspectall materialtobe shreddedandremoveany
metal,rocks,bottles,cans,or otherforeignobjectswhichcould
causepersonalinjuryor damagetothemachine.
• Ifitbecomesnecessaryto pushmaterialthroughtheshredder
hopper,usea smalldiameterstick.Donotuseyourhandsor feet.
• Iftheimpellerstrikesaforeignobjector ifyourmachineshould
startmakinganunusualnoiseorvibration,immediatelyshut
theengineoff. Allowthe impellertocometoa completestop.
Disconnectthesparkplugwire,grounditagainsttheengineand
performthefollowingsteps:
a. Inspectfordamage.
b. Repairorreplaceanydamagedparts.
c. Checkforanyloosepartsandtightento assurecontinued
safeoperation.
• Donotallowanaccumulationof processedmaterialto buildupin
thedischargearea.Thiscanpreventproperdischargeandresult
inkickbackof materialthroughthefeedopening.
• Donotattempttoshredorchipmateriallargerthanspecified
on themachineor inthismanual.Personalinjuryormachine
damagecouldresult.
• Neverattemptto unclogeitherthefeedintakeor discharge
openingwhilethe engineisrunning.Shuttheengineoff,waituntil
all movingpartshavestopped,disconnectthe sparkplugwireand
grounditagainsttheenginebeforeclearingdebris.
• Neveroperatewithoutthe shredderhopper,chipperchute,or
chutedeflectorproperlyattachedtothe machine.Neveremptyor
changedischargebagwhiletheengineis running.
• Keepallguards,deflectorsand safetydevicesin placeand
operatingproperly.
• Keepyourfaceandbodybackandtothesideof thechipper
chutewhilefeedingmaterialintothemachineto avoidaccidental
kickbackinjuries.
• Neveroperatethis machinewithoutgoodvisibilityorlight.
• Donotoperatethismachineona paved,gravelor non-level
surface.
• Donotoperatethismachinewhileundertheinfluenceof alcohol
or drugs.
• Mufflerandenginebecomehotandcancausea burn.Donot
touch.
• Neverpick uporcarrymachinewhiletheengineisrunning.
• Ifsituationsoccurwhichare notcoveredinthis manual,usecare
andgoodjudgement.ContactCustomerSupportforassistance
andthenameofthe nearestservicedealer.
MAINTENANCE & STORAGE
• Nevertamperwith safetydevices.Checktheirproperoperation
regularly.
• Checkboltsandscrewsforpropertightnessatfrequentintervals
to keepthemachineinsafeworkingcondition.Also,visually
inspectmachinefor anydamageandrepair,ifneeded.
• Beforecleaning,repairing,or inspecting,stoptheengineand
makecertaintheimpellerandall movingpartshavestopped.
Disconnectthesparkplugwireandgrounditagainsttheengine
to preventunintendedstarting.
• Donotchangetheenginegovernorsettingsoroverspeedthe
engine.Thegovernorcontrolsthe maximumsafeoperatingspeed
ofthe engine.
4
• Maintainor replacesafetyandinstructionlabels,asnecessary.
Followthismanualforsafeloading,unloading,transporting,and
storageof thismachine.
Neverstorethemachineorfuel containerinsidewherethereis an
openflame,sparkorpilot lightsuchas a waterheater,furnace,
clothesdryer,etc.
Allowmachinetocoolat least5 minutesbeforestoring.
• Alwaysrefertotheoperator'smanualforproperinstructionson
off-seasonstorage.
• Ifthefuel tankhasto bedrained,dothisoutdoors.
• Observeproperdisposallawsandregulationsforgas,oil,etc. to
protecttheenvironment.
• Accordingto theConsumerProductsSafetyCommission(CPSC)
andtheU.S.EnvironmentalProtectionAgency(EPA),thisproduct
hasan Average UsefulLifeofseven(7)years,or 60hoursof
operation.At theendoftheAverage UsefulLife havethemachine
inspectedannuallybyan authorizedservicedealerto ensurethat
allmechanicalandsafetysystemsareworkingproperlyand not
wornexcessively.Failuretodo socanresultinaccidents,injuries
ordeath.
DO NOT MODIFY ENGINE
Toavoidseriousinjuryordeath,donot modifyenginein anyway.
Tamperingwiththegovernorsettingcanleadto a runawayengineand
causeitto operateat unsafespeeds.Nevertamperwithfactorysetting
ofenginegovernor.
NOTICE REGARDING EMISSIONS
EngineswhicharecertifiedtocomplywithCaliforniaandfederal
EPAemissionregulationsforSORE(SmallOffRoadEquipment)are
certifiedto operateonregularunleadedgasoline,and mayinclude
thefollowingemissioncontrolsystems:EngineModification(EM),
OxidizingCatalyst(CO),SecondaryAirInjection(SAI)and ThreeWay
Catalyst(TWO)if soequipped.
SPARK ARRESTOR
Thismachineis equippedwithan internalcombustionengineand
shouldnotbe usedonor nearanyunimprovedforest-covered,
brushcoveredorgrass-coveredlandunlesstheengine'sexhaust
systemisequippedwitha sparkarrestermeetingapplicablelocalor
statelaws(if any)
Ifa sparkarresterisused,itshouldbemaintainedin effectiveworking
orderbytheoperator.Inthe StateofCaliforniatheaboveis required
bylaw (Section4442ofthe CaliforniaPublicResourcesCode).Other
statesmayhavesimilarlaws. Federallawsapplyonfederallands.
A sparkarresterforthe mufflerisavailablethroughyournearestSears
PartsandRepairServiceCenter.
SAFETY SYMBOLS
Thispagedepictsanddescribessafetysymbolsthatmayappearonthisproduct. Read,understand,andfollowallinstructionson themachine
beforeattemptingtoassembleandoperate.
READ THE OPERATOR'S MANUAL(S)
i
i
Read, understand, and follow all instructions in the manual(s) before attempting to assemble and
operate
WARNING-- ROTATING BLADES
Keep hands out of inlet and discharge openings while machine is running. There are rotating blades
inside
• ®
il
BYSTANDERS
Keep bystanders, pets, and children at least 75 feet from the machine while it is in operation. Stop
machine if anyone enters the area.
WARNING-- THROWN DEBRIS
Never operate without the chute deflector properly attached to the machine.
EYEPROTECTION
Always wear safety glasses or safety goggles when operating this machine.
warningsandinstructionsinthis manualandonthemachine.
I_ ARNING: YourResponsibility--Restricttheuseof thispowermachinetopersonswhoread,understandandfollowthe
SAVETHESEINSTRUCTIONS!
6
J
TO AVOID SERIOUS iNJURY:
• Do not operate on uneven ground where unit is
unstable, Do not operate on pavement, gravel or
other hard surfaces since objects can ricochet
and cause injury,
• To avoid a fire hazard, keep leaves, grass, and other
combustible materials away from hot engine and
muffler,
• Keep children and others away from area of
operation,
• Wear approved safety glasses, gloves and ear
protection.
TO AVOID SERIOUS iNJURY:
Read the owner's manual(s) before starting and
using unit.
Keep all shields and guards in place and securely
attached.
Keep hands, feet, face, clothing and long hair out of
Shredder Hopper, Chipper Chute and Discharge
Chute while the engine is running. Rotating cutting
blades inside these openings will cause serious
personal injury if contacted. Material being
)rocessed
may bounce back from inlet openings or be thrown
from the discharge chute. Long hair or loose clothing
may be pulled sucked into the inlet openings.
• Do not place branches over 1/2 inch diameter into
the large Shredder Hopper. Branches over 1/2 inch in
diameter should be placed in the Small Chipper
Chute.
• If the chipped shredder jams or becomes clogged,
immediately shut off the engine and wait for all
moving parts to come to a complete stop before
clearing.
• Do not install remove, adjust, or service the
discharge screen or any other part while the engine
is running, Blade contact can occur.
ROTATING CUTTING BLADES.
KEEP HANDS AND FEET OUT
OF OPENINGS WHILE MACHINE
iS RUNNING.
4
7
IMPORTANT:Thisunitisshippedwithoutgasolineoroil intheengine.
Becertaintoserviceenginewithgasolineandoilas instructedinthe
Operationsectionof this manualbeforeoperatingyourmachine.
NOTE:Referenceto rightand lefthandsideof theChipperShredder
isobservedfromthe operatingposition.
OPENING CARTON
1. Cuteachcornerof thecartonverticallyfromtopto bottom.
2. Removeall looseparts.
3. Removeloosepackingmaterial.
REMOVING UNiT FROM CARTON
1. Liftunit fromthereartodetachit fromunderlyingcartonmaterial
androllunitout ofcarton.
2. Checkcartonthoroughlyforanyotherlooseparts.
LOOSE PARTS IN CARTON
• HopperAssembly
• Bag
• ChuteDeflector
• ChipperChute
• Tamper
• SafetyGlasses
• EngineOil
• Owner'sManual
f
J
Figure1
f
ATTACHING THE HOPPER ASSEMBLY
1. A. Removesixhexnutsandwashersfromtheweldstudson the
impellerhousing.Donotremovesupportplate.SeeFigure1.
B. Placehopperassemblyintopositioninfrontof impeller
housing,aligningholesinhopperassemblycollarwithweld
studs.
C. Slidehopperassemblyontoweldstudsand replacewashers
andhexnuts.Donottightencompletely.
2. A. Lifthopperassemblyupto impellerbracketassembly.See
Figure2.
B.Slidethe releaserodout slightlytohookthehopperbracket
ontothe rod.SeeFigure2.
C.Tightenthesixhex nutsthatsecurehopperassemblyto
impellerhousingandalsotightenthe hexnutsthat secure
hopperbracketto hopperassembly.
Figure2
8
ATTACHING THE CHUTE DEFLECTOR
A.Removethewingknobsfromeachside ofthe lowerimpeller
housing.SeeFigure3.
B.Removethehexlocknut,spacers,andhexboltfromthetopof
theimpellerhousing.
.
A.Alignthe chutedeflectorinpositiononthe dischargeopening
andinserthexbolt withspacerthroughhingeonchute
deflector(spacersfit insideof hinges).SeeFigure4.
B.Placesecondspaceroverhex boltinsideotherhingeand
securewithhexlocknut.
C. Securebothsidesofchutedeflectorto impellerhousingusing
wingknobspreviouslyremoved.
ATTACHING THE CHIPPER CHUTE
A.Removethethreecuppedwashersandhex nutsfromweld
studsaroundthe openingonthesideofthe impellerhousing.
SeeFigure5.
B.Removethehexbolts,flatwashers,andlocknutsfromthe two
holeson theupperendofthesupportbrace.
i
Figure3
f
Figure4
Figure5
9
A,Alignthe chipperchuteovertheweld studs,sotheslotin the
bottomof thechuteis facingdown.SeeFigure6.
B.Securechipperchutewith thethreecuppedwashers(cupped
sideagainstthe chipperchute)andhexnutspreviously
removed.Donottightenthenutsatthistime.
.
Thechippershredderwasshippedwithoneendofthesupport
bracealreadysecuredto thelowerframe.Loosenbutdo not
removetheboltssecuringthe braceto theframe.
A.Alignthe holesinthe chutewiththeholesinthe topof the
braceandattachbraceto chipperchutewithhardware
previouslyremoved,Theflatwashersshouldbeplacedunder
thebolt headsandagainstthe insidesurfaceoftheplastic
chipperchute.Tightensecurely.SeeFigure7.
B.Tightenthe boltssecuringthesupportbracetothe frame.
C.Tightenthethreenutsontheweld studsholdingthechipper
chuteto theimpellerhousing.
ATTACHING THE BAG
1. Toattachthe bag:
A. Placetheopeningof thebagcompletelyoverthechute
deflector,
B. Pullonthedrawstringuntilthebagistightaroundchute
deflectoropening.
C. Clipdrawstringbackon itself,tightagainstchutedeflectorto
secureintoposition.SeeFigure8.
/
/
/
/
/ ,,
/'
/
,/
/
',\ ,//
\,\ ,/
/
/ /
/ / ,,/
i /
/
J
Figure6
f
i /
/
/
/
/
/
/
/
/
/ /
/ /
10
Figure7
f
Figure8
(large) HopperAssembly
ReleaseRod
GasFill
(small) Chipper Chute
Tamper===--_
Figure9
Nowthatyouhavesetupyourchippershredderforoperation,get
aquaintedwith itscontrolsandfeatures.Theseare describedbelow
andillustratedon thispage.Thisknowledgewillallowyou touseyour
newequipmenttoits fullestpotential.
CHIPPER CHUTE
Allowstwigsandsmallbranchesupto 3" indiametertobefedintothe
impellerforchipping.SeeFigure9.
HOPPER ASSEMBLY
Allowleavesandsmallbranchesupto 1/2diameterto befedintothe
impellerforchippingandshredding.Materialcanberakedintohopper
assemblybyloweringthehopperassembly.SeeFigure9.
RELEASE ROD
Thereleaserodislocatedon the impellerbracketassemblyandit
isusedto releaseorlockthehopperwhen raisingorlowering.See
Figure9.
CHUTE DEFLECTOR
Chippedandshreddeddebrisis dischargedoutthechutedeflector.
Theunit maybeoperatedwithorwithoutthecollectionbagattachedto
thechutedeflector.SeeFigure9.
Chute
Deflector
@
Theoperationof anychippershreddercan resultinforeignobjects
beingthrownintothe eyes,whichcan damageyoureyesseverely.
Alwayswearthesafetyglassesprovidedwiththisunitor eyeshields
beforechippingor shreddingandwhileperformingany adjustments
or repairs.
TAMPER
Thisplugisinsertedinto thechipperchuteto pushtwigsandsmall
branchestowardstheimpellerbladeswithoutendangeringyour hands.
TH ROTTLE CONTROL
Thislevercontrolstheenginespeedandstopfunction.Throughthree
separatepositionsontheleverfromleftto right,theoperationisas
follows:
Start/Run Slow/Idle Engine Off
CHOKE CONTROL
Thechokecontrolis usedto chokethecarburetorand assistinstarting
theengine.
Meets ANSI Safety Standards
CraftsmanYardVacuumsconformtothesafetystandardof theAmericanNationalStandardsInstitute(ANSI).
11
GAS AND OIL FILL-UP
Oil (one bottle shipped with unit)
FirstTimeUse
1. Removeoil filldipstick.
2. Withthe chippershredderonlevelground,usea funnelto empty
entirecontentsofoil bottleprovidedintotheengine.
3. Replaceoilfill dipstickandtighten.
Subsequent Uses
Onlyuse highqualitydetergentoil ratedwithAPIserviceclassification
SF,SG,or SH.Selecttheoil'sSAEviscositygradeaccordingtothe
expectedoperatingtemperature.Followthechartbelow.
_older _ 32°F _Warmer'_
OilViscosity Chart
Althoughmulti-viscosityoils(5W30,10W30,etc.)improvestarting
incoldweather,theywill resultinincreasedoil consumptionwhen
usedabove32°E Checkyourengineoillevel morefrequentlytoavoid
possibleenginedamagefromrunninglowon oil.
1. Checktheoil levelmakingcertainnotto rubthe dipstickalongthe
insidewallsof theoilfilltube.Thiswouldresultina falsedipstick
reading.Wipedipstickcleanwithcloth. Replaceandtighten
dipstick.Removeandcheckoil level.Refillto FULLmarkon
dipstick,if necessary.Capacityisapproximately28oz. Overfilling
willcausethe enginetosmokeprofuselyandwill resultinpoor
engineperformance.
2. Replaceoilfill dipstickandtighten.
J
Alcoholblendedfuels(calledgasoholorusingethanolormethanol)
canattractmoisturewhichleadsto separationand formationofacids
duringstorage.Acidicgascandamagethefuel systemofanengine
whilein storage.
Toavoidengineproblems,thefuelsystemshouldbeemptiedbefore
storagefor30daysorlonger.Drainthegastank,starttheengine
andletit rununtilthefuellinesandcarburetorare empty.Use
freshfuelnextseason.See STORAGEInstructionsforadditional
information.
Neveruseengineorcarburetorcleanerproductsinthefuel tankor
permanentdamagemayoccur.
NOTE:Checkthefuel levelperiodicallytoavoidrunningoutofgaso-
linewhileoperatingthe chippershredder.Ifthe unitrunsoutof gasas
itis chipping,itmaybenecessarytounclogthedischargeareabefore
itcan be restarted.RefertoSERVICEANDMAINTENANCEsection.
TO START ENGINE
1. Attach sparkplugwireandrubberboottosparkplug.
2. Filltankto nomorethan1/2inchbelowbottomoffillerneckto
providespaceforfuelexpansion.
3. Turnthefuel shut-offvalvetothe ONposition.
4. Movethechokeleverontheengineto CHOKEI'i,I position.(A
warmenginemaynotrequirechoking.)See Figure10.
5. Movethrottlecontrolto START/RUN(Rabbit),_ position.See
Figure10.
6. Standingbehindtheunit,graspstarterhandleand pullropeout
untilyoufeela drag.
f
l Useextremecarewhenhandlinggasoline.Gasolineisextremely
flammableandthe vaporsareexplosive.Neverfuelmachineindoors
or whiletheengineis hotor running.Extinguishcigarettes,cigars,
pipes,andothersourcesofignition.
3. Keepoil levelat FULL.Runningtheenginewithtoo littleoil can
resultinpermanentenginedamage.
Gasoline
1. Removefuelcap fromthefuel tank.
2. Makesurethecontainerfromwhichyouwillpourthegasolineis
cleanandfreefromrustor foreignparticles.Neverusegasoline
thatmaybestalefromlongperiodsofstoragein itscontainer.
Gasolinethathasbeensittingfor anyperiodlongerthanfour
weeksshouldbeconsideredstale.
3. Fillfueltankwithclean,fresh,unleadedregulargasolineonly.Do
notusegasolinecontainingMETHANOL.Replacefuelcap.
J
Figure10
12
NOTE:A noisewillbeheardwhenfindingthestartofthe compression
cycle.Thisnoiseis causedbythe flailsandfingers,whicharepartof
theshreddingmechanism,andit shouldbe expecteduntiltheimpeller
reachesfull speed.
7. Pullthe ropewitha rapid,continuous,fullarmstroke.Keepa firm
griponthestarterhandle.Lettheroperewindslowly.
8. Repeat,if necessary,untilenginestarts.Whenenginestarts,
movechokecontrolgraduallytowardtheRUNI JtIposition..
9. If enginefalters,movechokecontrolbacktowardtheCHOKE
I'o,I positionandrepeatsteps5 though8.
10. ALWAYSkeepthe throttlecontrolinthe START/RUNposition
whenoperatingthe chippershredder.
TO STOP ENGINE
1. Movethrottlecontrolleverto slow(turtle)'_ position.
Wheneverpossible,graduallyreduceenginespeedbefore
stoppingengine.
2. Movethrottlecontrolleverto STOPI or OFFposition.
3. Turnthefuel shut-offvalvetotheOFFposition.
4. Disconnectsparkplugwireandgrounditagainsttheengineto
preventaccidentalstartingwhiletheequipmentisunattended.
SHREDDING
Yardwastesuchas leavesandpineneedlescanbe placedinthe
hopperforshredding.Aftermaterialhasbeenprocessedbythe shred-
derbladeandflails,it willbeforcedout ofthechutedeflector,and,if
attached,into adebriscollectionbag.
Observethefollowingguidelineswhenshreddingyarddebris:
• Neverattempttoshredmaterialotherthannormalyarddebris
(leaves,twigs,pinecones,etc.).
• Avoidshreddingfibrousplantssuchas tomatovines,palmfronds,
etc.,untiltheyare thoroughlydriedout.Freshvinesdo notshred
wellandtend towrapthemselvesaroundtheimpellerandflails.
• Placereasonableamountsofdebrisintothe hopperata time.Do
notoverloadthe hopper.
• Allowthematerialinthehopperto bedrawnintothebladesand
shreddedbeforeaddingadditionaldebristo thehopper.Failureto
duesomayresultin acloggedhopper,cloggedchutedeflectoror
a stalledengine.
CHIPPING
Branchesupto3" in diametercanbefedintothechipperchute.
Observethefollowingguidelineswhenchippingbranches:
• Keepbothhandsfirmlyonthebranchas youfeed itintothe
chipperchute.
• Neverfeed morethanonebranchintothechipperchuteata time.
• Neverfeed anythingotherthan branches(orwood)intothe
chipperchute.
• Applyintermittentpressure(force,inshortpulses)whilefeeding
larger(3-inchdiameter)branchesintothechipperchute,toavoid
boggingor stallingtheengine.
IMPORTANT:Neverfeed brancheswitha diametergreaterthan
three(3)inchesintothechipperchute.Doingsocan resultin serious
damageto yourunit'schipperblades,flailsor impeller.
NOTE:Forbestperformance,alwaysoperatetheunitwith sharp
chipperblades.If a noticeablelossinperformanceisencountered
whilechippingbranches,thechipperbladesshouldbe replaced.
LOWERING THE HOPPER ASSEMBLY
1. Withonehandgraspthehandleat thetopofthe hopperassem-
blyandlift slightly.
2. Withthe otherhandpulloutonthereleaserodandlowerthe
hopperassemblytotheground.
TO EMPTY BAG
1. Un-clipdrawstringandloosenbagfromchutedeflectoropening.
2. Emptybagandreattachtothe dischargechuteopening.Pullon
thedrawstringuntilthe bagistightaroundthe chuteopeningand
clipthe drawstringtightagainstthechutedeflector.
IMPORTANT:Theflailscreenislocatedinsidethehousingin the
dischargearea.Iftheflailscreenbecomesclogged,removeand
cleanas instructedintheServiceand Maintenancesection.Forbest
performance,itisalso importanttokeepthechipperbladessharp.
13
MAINTENANCE SCHEDULE
Beforeperforminganytypeofmaintenance/service,disengageall
controlsandstoptheengine.Waituntilallmovingpartshavecometo
acompletestop.Disconnectsparkplugwireandgrounditagainstthe
enginetopreventunintendedstarting.Alwayswearsafetyglassesduring
operationorwhileperforminganyadjustmentsorrepairs.
EachUse
1st5 - 8 hours
25 hours
Annuallyor50hours
Annuallyor100hours
BeforeStorage 1. Fuelsystem
Underheavyloador inhightemperatures
.
Engineoillevel
2.
Looseormissinghardware
3.
Unitandengine.
1.
Engineoil
1.
Engineoill-
2.
Aircleaner
3.
Controllinkagesand pivots
1.
Engineoil
2.
Muffler
1.
Sparkplug
1. Check
2. Tightenor replace
3. Clean
1. Change
1. Change
2. Replace
3. Lubewithlightoil
1. Change
2. Inspect
1. Clean,checkand resetgap,or
1. Runengineuntilit stopsfromlackof
Followthemaintenanceschedulegivenbelow.Thischartdescribes
serviceguidelinesonly.UsetheServiceLogcolumnto keeptrackof
completedmaintenancetasks.Tolocatethe nearest SearsService
Centeror toscheduleservice,simplycontactSearsat
1-800-4-MY-HOME®.
replacesparkplug.
fueloradda gasolineadditivetothe
gasin thetank.
Alwaysstopengineanddisconnectsparkplugwire beforeperforming
Ianymaintenanceoradjustments.Alwayswearsafetyglassesduring
[operationor whileperforminganyadjustmentsor repairs.
GENERAL RECOMMENDATIONS
• Alwaysobserveallsafetyrulesfoundonproductlabelsandin
thisoperator'smanualwhenperforminganymaintenance.Safety
rulescan befoundonthe productlabelsandin thisOperator's
Manualbeginningon page3.
• Thewarrantyonthischippershredderdoesnotcoveritemsthat
havebeensubjectedto operatorabuseor negligence.Toreceive
fullvalue fromwarranty,operatormustmaintaintheequipmentas
instructedhere.
• Someadjustmentswillhaveto be madeperiodicallyto maintain
yourunit properly.
• Periodicallycheckallfastenersand makesurethesearetight.
ENGINE MAINTENANCE
Checking the Spark Plug
Cleansparkplugandresettheelectrodegapto0.030"atleastoncea
season;replaceevery100hoursof operation.
f
Electrode
Porcelain
,L
.030 (.76 mm) gap
Figure 11
• Cleanareaaroundthesparkplugbase.Donot sandblastspark
plug.Sparkplugshouldbecleanedbyscrapingorwirebrushing
andwashingwitha commercialsolvent.
• Removeandinspectthe sparkplug.Checkgaptomakesureitis
setat .030".SeeFigure11.
• Replacethe sparkplugif electrodesare pitted,burned,orthe
porcelainiscracked.
14
Servicing the Air Cleaner f
Donotusepressurizedairor solventstocleantheaircleaner
cartridge.
Theair cleanerpreventsdamagingdirt,dust,etc.,fromenteringthe
carburetorand beingforcedintotheengineandis importanttoengine
lifeandperformance.Neverruntheenginewithoutan aircleaner
completelyassembled.
Replacetheaircleanerevery25 hoursof operation.
1. Loosenscrewsthatholdtheairfiltercover.
2. Opencoverandremoveairfilter.See Figure12.
3. Discardold airfilter.
4. Installnewairfilter.
5. Closethe coverandtightenscrews.
NOTE:Ifthe filteristorn ordamagedinanyway,replaceit.
Check Engine Oil
1. Checkoilbeforeeachuse.Stopengineandwaitseveralminutes
beforecheckingoil level.Withengineon levelground,theoil must
beto FULLmarkondipstick.
2. Removeoilfilldipstickandwipecleanwithcloth.
3. Replaceandtightendipstick.Removeandcheckoil level.Level
shouldbeat FULLmark.
4. If needed,addoil slowly- recheck.Donotoverfill.
5. Wipedipstickclean,replaceandtighten.Removeandcheckoil
level.Oil levelshouldbe atFULLlineondipstick.
3over
_ J
Figure12
Donotoverfill.Overfillingwithoil maycausetheenginetonotstart,or
hardstarting.If overthe FULLmarkon thedipstick,drainoilto reduce
oil leveltoFULLmarkondipstick.
Change Engine Oil
* OnlyusehighqualitydetergentoilratedwithAPIservice
classificationSF,SG, orSH.Selecttheoil'sSAEviscositygrade
accordingtotheexpectedoperatingtemperature.Refertoopera-
tionsectionforviscositychart.
, Changeengineoil afterthefirst fivetoeighthoursofoperation,
andeveryfifty hoursoreveryseasonthereafter.Changeoilevery
twentyfivehourswhenoperatingengineunderheavyloadorin
hightemperatures.
To Drain Oil
1. Drainthefuelfromthetankby runningtheengineuntil thefuel
tankisempty.
2. WithengineOFFbutstillwarm,disconnectsparkplugwire and
keepitawayfromsparkplug.
End Cap----_d_ _
J
Figure13
3. Removeoil drainendcap locatedatthebaseoftheengine,and
drainoil intoanappropriatereceptacle.SeeFigure13.
Usedoil isahazardouswasteproduct.Disposeofusedoil properly.
IDo notdiscardwithhouseholdwaste.Checkwithyour localauthori-
_tiesorSearsServiceCenterforsafedisposal/recyclingfacilities.
.
Replaceandtightentheoildrainendcap.
5.
Whenengineis drainedofall oil,placeenginelevel.Refillwith
approximately28oz.offreshoil.Fill toFULLlineondipstick.
Donot overfill.Referto CheckEngineOil inthis SERVICE&
MAINTENANCEsection.
6. Replacesparkplugwirebeforestarting.
15
Service IVluffler f
Temperatureof mufflerandnearbyareasmayexceed150°F(65°C).
Avoidtheseareas.
• Inspectmufflerevery50 hours,andreplaceif necessary.
Replacementpartsforthemufflermustbethe sameandinstalled
inthe samepositionastheoriginalparts.
Clean Engine
Dailyor beforeeveryuse,cleangrass,chaffor accumulated
debrisfromengine.Keeplinkage,spring,andcontrolsclean.
Keepareaaroundandbehindmufflerfreeofanycombustible
debris.
• Keepingenginecleanallowsairmovementaroundengine.
• Enginepartsshouldbe keptcleanto reducetheriskof overheat-
ingandignitionofaccumulateddebris.
Donot usewatertocleanengineparts.Watercouldcontaminatefuel
system.Usea brushordrycloth.
Carburetor Adjustment
Thecarburetoronthis engineis notadjustable.
Donot,attempttoaltertheenginespeedbytamperingwiththe
engines governorlinkage.Doingsocouldresultin seriouspersonal
Iinjuryanddamagetotheengine.TheengineRPMhasbeensetat
thefactory.
Engine Speed
LUBRICATION
• HopperAssembly-Lubricatethe pivotpointson thehopper
assemblywithlightoilonceaseason.
• DischargeChute- Lubricatethepivotpointsonthedischarge
chutewithlightoilonce a season.
• ReleaseRod-Lubricatethereleaserodand springwith lightoil
oncea season.
CLEAN EQUIPMENT
• Cleanthechippershredderthoroughlyaftereachuse.
• Washbagperiodicallywithwater.Allowto drythoroughlyin
shade.
• Iftheflailscreenbecomesclogged,removeandcleanas
instructedbelow.
NOTE:Cleaningwitha forcefulsprayof waterisnotrecommendedas
itcouldcontaminatethefuelsystem.
//
/
i
/
/
Figure14
Beforeperforminganytypeof maintenanceonthe machine,waitfor
all partsto stopmovinganddisconnectthesparkplugwire.Failure
tofollowthis instructioncouldresultin personalinjuryor property
damage.
REMOVING THE FLAIL SCREEN
Ifthedischargeareabecomesclogged,removethe flailscreenand
cleanareaas follows:
1. Stoptheengine.Makecertainthechippershredderhascometo
a completestop.
2. Disconnectsparkplugwirefromsparkplugandgroundagainst
theengine.
3. A. Removethebagandtwowingknobsoneachsideofthechute
deflector.SeeFigure14.
B.Liftthe chutedeflectorupto keepitoutofthe way.
C.Removethetwo hairpinclipsfromeachclevispinwhich
extendthroughthehousingandremovepins.
D.Removetheflailscreenfrominsidethehousingandcleanthe
screenbyscrapingorwashingwithwater.SeeFigure14.
4. Reinstallthescreen,makingcertainto reassembletheflailscreen
withthecurvesidedown.
5. Reattachthechutedeflectorwiththehardwarepreviouslyremoved
andconnectthe bagto unit.
SHARPENING OR REPLACING CHIPPER
BLADES
1. Disconnectthesparkplugwireandgroundagainsttheengine.
2. Removetheflailscreenas instructedinthe previoussection.
3. Removethechipperchuteby removingthreehexnutsand
washers.
16
4, Removethechipperchutesupportbracefromthe frameby
removingthehexbolts.
5. Rotateimpellerassemblybyhanduntilyoulocateoneoftwo
chipperbladesin thechipperchuteopening.
6, Removethebladeby removingtheinternalhexscrews,lock
washers,andhexnutswhichsecureittothe impeller.Retainthe
hardware,SeeFigure15,
NOTE:Usea3/16"hexkey(Allen)wrenchon theoutsideofthe blade
anda 1/2"box(or socket)wrenchontheinsideofthe impeller.Hold
theAllenwrenchstationaryandrotatethe box(or socket)wrenchto
loosenthenut.
7. Installa replacementblade(Part No.742-0544)withthe hardware
removedearlierorsharpenandreplaceexistingblade.
Impeller
IMPORTANT:Whensharpeningthe blade,protecthandsby using
gloves.Followtheoriginalangleofgrindandmakesuretoremovean
equalamountfromeachblade.
8. To replacetheotherblade,rotatetheimpellertoexposethe
secondbladeand repeatthestepsabove.
NOTE: Makecertainbladesare reassembledwiththesharpedge
facingthesamedirectionas whenremoved.Torquehardwareto250
- 300in.Ibs.
Theimpeller'schipperbladesandshredderbladearesharp.Wear
leatherworkglovesto protectyourhands.
SHARPENING OR REPLACING THE
SHREDDER BLADE
1. Stoptheengineandmakecertainthatallmovingpartshave
cometoa completestop.
2. Disconnectthesparkplugwire andgroundagainsttheengine.
3. Lowerthehopperassemblyandplacea blockundertheflailhousing.
4. Removethesix hexlocknutsandflatwashersfromtheweld
studsonthe flailhousing.Retainthehardware.
5. Carefullyseparatethehopperassemblyfromthe impelleras-
semblyandremovetheshredderplate.Theshredderplatecan be
identifiedby referringtoitem29in the partsliston page20 &21.
Blade
J
Figure15
Weld Studs,
/
Flail Housing
Figure16
IMPORTANT:Whenreassemblingtheshredderblade,tightencenter
boltto between550and700in.-Ibs,andthetwooutsideboltsto
between250and350in.-Ibs.
NOTE:Whenreassemblingtheshredderplate,makecertainthe
embossedtabfacesinwardtowardstheimpeller.
6. Removethetwo wingknobsthatsecurethe chutedeflectorand
raisethe chute.
7. Inserta 1/2"or3/4" diameterpipethroughtheflailscreenintothe
impellertokeepit fromturningorremovetheflailscreenand
inserta pieceof woodintothe chuteopening.
8. A. Removethetwointernalhexscrews,lockwashers,andhex
locknutswhichsecurethe shredderbladetotheimpeller.
B.Removethehexbolt,lockwasher,andflat washerto
completelyfreeshredderblade.SeeFigure16.
9. Installa replacementblade(Part No.742-0544)withthehardware
removedearlierorsharpenandreplaceexistingblade.
NOTE:Usea 3/16"hexkey(Allen)wrenchonthe outsideofthe
shredderbladeanda 1/2"box(or socket)wrenchon theinsideof the
shredderblade.HoldtheAllenwrenchstationaryandrotatethebox
(orsocket)wrenchtoloosenthenut. Usecautionwhen removingthe
bladetoavoidcontactingthe weldstudson housing.
IMPORTANT:Whensharpeningtheblade,followtheoriginalangle
ofgrindas a guide.Itisextremelyimportantthateachcuttingedge
receivesan equalamountofgrindingtopreventanunbalancedblade.
An unbalancedbladewillcauseexcessivevibrationwhenrotatingat
highspeedsandmaycausedamagetotheunit.Thebladecanbe
testedby balancingiton ascrewdriverornail.Removemetalfromthe
heavysideuntil itisbalancedevenly.
17
Loading...