MTD 24A464G799 Owner's manual

Category
Garden shredders
Type
Owner's 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
Before using this equipment,
read this manual and follow
all safety rules and operating
instructions.
* SAFETY
* ASSEMBLY
* OPERATION
* MAINTENANCE
* PARTS LIST
* ESPANOL
Sears Brands Management Corporation, Hoffman Estates, iL 60179 U.S.A.
Visit our website: www.craftsman.com
FORMNO.769-05040A
5/24/2010
Warranty Statement .................................. Pac
Safe Operation Practices .......................... Pac
Safety Labels ............................................ Pac
Assembly .................................................. Pac
Operation .................................................. Pac
Service and Maintenance ......................... Pac
Off-Season Storage .................................. Pac
e2
es 3-6
e7
es 8-11
es 12-13
es 14-17
e18
Trouble Shooting ....................................... Page 19
Parts List ................................................... Page 20-30
Label Map ................................................. Page 31
Repair Protection Agreement ................... Page 34
Espa_ol ..................................................... Page 35
Service Numbers ...................................... Back Cover
CRAFTSMAN FULLWARRANTY
Whenoperatedand maintainedaccordingtoallsuppliedinstructions,ifthischippershredderfailsduetoa defectin materialorworkmanship
withintwoyearsfromthedateofpurchase,returnittoanySearsstore,SearsParts& RepairServiceCenter,or otherCraftsmanoutletinthe
UnitedStatesforfreerepair(or replacementif repairprovesimpossible).
Thiswarrantyappliesforonly90 daysfromthedateof purchaseifthischippershredderiseverusedforcommercialor rentalpurposes.
ThiswarrantycoversONLYdefectsin materialandworkmanship.SearswillNOTpayfor:
Expendableitemsthatbecomewornduringnormaluse,includingbutnotlimitedtoblades, sparkplug,aircleaner,flailscreenand catcher
bag.
Standardmaintenanceservicing,oilchanges,or tune-ups.
Tirereplacementor repaircausedbypuncturesfromoutsideobjects,suchasnails,thorns,stumps,or glass.
Tireor wheelreplacementor repairresultingfromnormalwear,accident,orimproperoperationor maintenance.
Repairsnecessarybecauseofoperatorabuse,includingbutnotlimitedtodamagecausedbyimpactingobjectsthat bendtheframeor
crankshaft,orover-speedingtheengine.
Repairsnecessarybecauseofoperatornegligence,includingbutnotlimitedto,electricalandmechanicaldamagecausedbyimproper
storage,failureto usethepropergradeand amountofengineoil,or failureto maintaintheequipmentaccordingtotheinstructions
containedintheoperator'smanual.
Engine(fuelsystem)cleaningor repairscausedbyfueldeterminedto becontaminatedor oxidized(stale).Ingeneral,fuelshouldbeused
within30 daysof itspurchasedate.
Normaldeteriorationandwearoftheexteriorfinishes,orproductlabelreplacement.
Thiswarrantyappliesonlywhilethisproductiswithinthe UnitedStates.
Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrightswhichvaryfromstatetostate.
Sears BrandsManagementCorporation, HoffmanEstates,IL60179
EngineSeries: 1450
EngineOilType: SAE30
EngineOilCapacity: 28ounces
Fuel: UnleadedGasoline
SparkPlug: Champion®RC-12YC
SparkPlugGap: .030"
Model Number.................................................................
Serial Number .................................................................
Dateof Purchase.............................................................
Recordthemodelnumber,serialnumber
anddateof purchaseabove
©SearsBrands,LLC 2
Thissymbolpointsoutimportantsafetyinstructionswhich,if not
followed,couldendangerthepersonalsafetyand/orpropertyof
yourselfandothers.Readandfollowall instructionsin thismanual
beforeattemptingtooperatethismachine.Failuretocomplywith
theseinstructionsmayresultin personalinjury.Whenyouseethis
symbol,HEEDITSWARNING!
CALIFORNIA PROPOSITION 65
EngineExhaust,someof itsconstituents,andcertainvehicle
componentscontainoremitchemicalsknowntoStateofCalifornia
tocausecancerandbirthdefectsorotherreproductiveharm.
Thismachinewasbuilttobeoperatedaccordingtothesafeopera-
tionpracticesinthismanual.Aswithanytypeofpowerequipment,
carelessnessorerroronthepartoftheoperatorcan resultin
seriousinjury.Thismachineiscapableofamputatingfingers,hands,
toesandfeetandthrowingdebris.Failureto observethefollowing
safetyinstructionscouldresultin seriousinjuryordeath.
Your Responsibility--Restrict theuseofthispowermachineto
personswhoread,understandandfollowthewarningsandinstruc-
tionsinthismanualandon themachine.
SAVETHESEINSTRUCTIONS!
TRAINING
Read,understand,andfollowall instructionson themachineand
in themanual(s)beforeattemptingtoassembleandoperate.
Keepthis manualina safeplaceforfutureand regularreference
andfororderingreplacementparts.
ReadtheOperator'sManualand followallwarningsand safety
instructions.Failuretodosocanresultin seriousinjurytothe
operatorand/orbystanders.Forquestions,call1-800-659-5917.
Befamiliarwithall controlsandtheirproperoperation.Knowhow
tostopthemachineanddisengagethemquickly.
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.Contactwiththerotating
impellercanamputatefingers,hands,andfeet.
Neverattempttounclogeitherthefeedintakeordischarge
opening,removeor emptybag,or inspectand repairthemachine
whiletheengineisrunning.Shuttheengineoff andwaituntilall
movingpartshavecometoa completestop.Disconnectthespark
plugwireandgroundit againsttheengine.
PREPARATION
Thoroughlyinspecttheareawheretheequipmentistobeused.
Removeall rocks,bottles,cans,or otherforeignobjectswhich
couldbepickedupor thrownandcausepersonalinjuryor
damageto themachine.
Alwayswearsafetyglassesor safetygogglesduringoperation
andwhileperformingan adjustmentor repair,to protectyour
eyes.Thrownobjectswhichricochetcancauseseriousinjuryto
theeyes.
Wearsturdy,rough-soledworkshoesandclose-fittingslacksand
shirts.Loosefittingclothesor jewelrycanbecaughtin movable
parts.Neveroperatethismachineinbarefeetorsandals.Wear
leatherworkgloveswhenfeedingmaterialinthechipperchute.
Beforestarting,checkallboltsandscrewsforpropertightnessto
besurethemachineisinsafeworkingcondition.Also,visually
inspectmachineforanydamageatfrequentintervals.
Maintainor replacesafetyandinstructionslabels,asnecessary.
3
SafeHandlingof Gasoline:
Toavoidpersonalinjuryor propertydamageuseextremecarein
handlinggasoline.Gasolineisextremelyflammableandthevaporsare
explosive.Seriouspersonalinjurycanoccurwhengasolineisspilled
onyourselfor yourclotheswhichcanignite.Washyourskinand
changeclothesimmediately.
Useonlyan approvedgasolinecontainer.
Neverfillcontainersinsidea vehicleor ona truckor trailerbed
witha plasticliner.Alwaysplacecontainersonthegroundaway
fromyourvehiclebeforefilling.
Whenpractical,removegas-poweredequipmentfromthetruck
ortrailerand refuelitontheground.Ifthisisnotpossible,then
refuelsuchequipmenton a trailerwitha portablecontainer,rather
thanfroma gasolinedispensernozzle.
Keepthenozzleincontactwiththerimofthefueltankor
containeropeningatalltimesuntilfuelingiscomplete.Donotuse
a nozzlelock-opendevice.
Extinguishallcigarettes,cigars,pipesandothersourcesof
ignition.
Neverfuelmachineindoors.
Neverremovegascapor addfuelwhiletheengineishotor run-
ning.Allowenginetocoolatleasttwo minutesbeforerefueling.
Neveroverfillfueltank.Filltankto nomorethan1/2inchbelow
bottomoffillernecktoallowspaceforfuelexpansion.
Replacegasolinecapandtightensecurely.
Ifgasolineisspilled,wipeitoff theengineandequipment.Move
unittoanotherarea.Wait5 minutesbeforestartingtheengine.
Toreducefirehazards,keepmachinefreeofgrass,leaves,or
otherdebrisbuild-up.Cleanupoil orfuelspillageand removeany
fuelsoakeddebris.
Neverstorethemachineorfuelcontainerinsidewherethereisan
openflame,sparkor pilotlightason awaterheater,spaceheater,
furnace,clothesdryerorothergasappliances.
OPERATION
Donotputhandsandfeetnearrotatingpartsor in thefeeding
chambersanddischargeopening.Contactwiththerotating
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.
Iftheimpellerstrikesa foreignobjector ifyourmachineshould
startmakinganunusualnoiseorvibration,immediatelyshut
theengineoff.Allowtheimpellertocometoa completestop.
Disconnectthesparkplugwire,grounditagainsttheengineand
performthefollowingsteps:
a. Inspectfordamage.
b. Repairor replaceanydamagedparts.
c. Checkforanyloosepartsandtightento assurecontinued
safeoperation.
Donotallowanaccumulationof processedmaterialto buildupin
thedischargearea.Thiscanpreventproperdischargeandresult
inkickbackof materialthroughthefeedopening.
Donotattempttoshredorchipmateriallargerthanspecified
on themachineor inthis manual.Personalinjuryor machine
damagecouldresult.
Neverattempttounclogeitherthefeedintakeor discharge
openingwhiletheengineisrunning.Shuttheengineoff,waituntil
all movingpartshavestopped,disconnectthesparkplugwireand
grounditagainsttheenginebeforeclearingdebris.
Neveroperatewithouttheshredderhopper,chipperchute,or
chutedeflectorproperlyattachedtothemachine.Neveremptyor
changedischargebagwhiletheengineisrunning.
Keepallguards,deflectorsand safetydevicesin placeand
operatingproperly.
Keepyourfaceandbodybackandtothesideofthechipper
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
andthenameofthenearestservicedealer.
MAINTENANCE & STORAGE
Nevertamperwith safetydevices.Checktheirproperoperation
regularly.
Checkboltsandscrewsforpropertightnessatfrequentintervals
to keepthemachineinsafeworkingcondition.Also,visually
inspectmachineforanydamageandrepair,ifneeded.
Beforecleaning,repairing,or inspecting,stoptheengineand
makecertaintheimpellerandall movingpartshavestopped.
Disconnectthesparkplugwireandgrounditagainsttheengine
to preventunintendedstarting.
Donotchangetheenginegovernorsettingsoroverspeedthe
engine.Thegovernorcontrolsthemaximumsafeoperatingspeed
oftheengine.
4
Maintainor replacesafetyandinstructionlabels,asnecessary.
Followthismanualforsafeloading,unloading,transporting,and
storageof thismachine.
Neverstorethemachineorfuelcontainerinsidewherethereisan
openflame,sparkorpilotlightsuchasa waterheater,furnace,
clothesdryer,etc.
Allowmachinetocoolatleast5 minutesbeforestoring.
Alwaysrefertotheoperator'smanualforproperinstructionson
off-seasonstorage.
Ifthefueltankhasto bedrained,do thisoutdoors.
Observeproperdisposallawsand regulationsforgas,oil,etc.to
protecttheenvironment.
AccordingtotheConsumerProductsSafetyCommission(CPSC)
andtheU.S.EnvironmentalProtectionAgency(EPA),thisproduct
hasan AverageUsefulLifeofseven(7)years,or 60hoursof
operation.AttheendoftheAverageUsefulLife havethemachine
inspectedannuallybyan authorizedservicedealertoensurethat
allmechanicalandsafetysystemsareworkingproperlyand not
wornexcessively.Failuretodo socanresultinaccidents,injuries
ordeath.
DO NOT MODIFY ENGINE
Toavoidseriousinjuryordeath,donotmodifyenginein anyway.
Tamperingwiththegovernorsettingcanleadto a runawayengineand
causeittooperateatunsafespeeds.Nevertamperwithfactorysetting
ofenginegovernor.
NOTICE REGARDING EMISSIONS
EngineswhicharecertifiedtocomplywithCaliforniaandfederal
EPAemissionregulationsforSORE(SmallOff RoadEquipment)are
certifiedtooperateon regularunleadedgasoline,and mayinclude
thefollowingemissioncontrolsystems:EngineModification(EM),
OxidizingCatalyst(CO),SecondaryAirInjection(SAI)and ThreeWay
Catalyst(TWO)if soequipped.
SPARK ARRESTOR
Thismachineis equippedwithan internalcombustionengineand
shouldnotbe usedonor nearanyunimprovedforest-covered,
brushcoveredor grass-coveredlandunlesstheengine'sexhaust
systemisequippedwitha sparkarrestermeetingapplicablelocalor
statelaws(ifany)
Ifa sparkarresterisused,itshouldbemaintainedin effectiveworking
orderbytheoperator.IntheStateofCaliforniatheaboveis required
bylaw(Section4442oftheCaliforniaPublicResourcesCode).Other
statesmayhavesimilarlaws.Federallawsapplyonfederallands.
A sparkarresterforthemufflerisavailablethroughyournearestSears
PartsandRepairServiceCenter.
SAFETY SYMBOLS
Thispagedepictsanddescribessafetysymbolsthatmayappearonthisproduct. Read,understand,andfollowall instructionson themachine
beforeattemptingtoassembleandoperate.
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®
il
READ THE OPERATOR'S MANUAL(S)
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
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.
I_ ARNING: YourResponsibility--Restricttheuseofthispowermachinetopersonswhoread,understandandfollowthe
warningsandinstructionsinthis manualandonthemachine.
J
SAVETHESEINSTRUCTIONS!
6
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.
ROTATING CUTTING BLADES.
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.
KEEP HANDS AND FEET OUT
OF OPENINGS WHILE MACHINE
iS RUNNING.
7
IMPORTANT:Thisunitisshippedwithoutgasolineoroil intheengine.
Becertaintoserviceenginewithgasolineandoilasinstructedinthe
Operationsectionofthis manualbeforeoperatingyourmachine.
NOTE:Referenceto rightand lefthandsideoftheChipperShredder
isobservedfromtheoperatingposition.
OPENING CARTON
1. Cuteachcornerofthecartonverticallyfromtopto bottom.
2. Removeall looseparts.
3. Removeloosepackingmaterial.
REMOVING UNiT FROM CARTON
1. Liftunitfromthereartodetachitfromunderlyingcartonmaterial
androllunitoutofcarton.
2. Checkcartonthoroughlyforanyotherlooseparts.
LOOSE PARTS IN CARTON
HopperAssembly
Bag
ChuteDeflector
ChipperChute
Tamper
SafetyGlasses
EngineOil
Owner'sManual
ATTACHING THE HOPPER ASSEMBLY
1. A. Removesixhexnutsandwashersfromtheweldstudson the
impellerhousing.Donotremovesupportplate.SeeFigure1.
B. Placehopperassemblyintopositioninfrontofimpeller
housing,aligningholesinhopperassemblycollarwithweld
studs.
C. Slidehopperassemblyontoweldstudsand replacewashers
andhexnuts.Donottightencompletely.
2. A. Lifthopperassemblyup toimpellerbracketassembly.See
Figure2.
B.Slidethereleaserodoutslightlytohookthehopperbracket
ontothe rod.SeeFigure2.
C.Tightenthesixhexnutsthatsecurehopperassemblyto
impellerhousingandalsotightenthehexnutsthat secure
hopperbracketto hopperassembly.
f
Figure1
J
f
Figure2
8
ATTACHING THE CHUTE DEFLECTOR
1. A.Removethewingknobsfromeachsideofthelowerimpeller
housing.SeeFigure3.
ATTACHING THE CHIPPER CHUTE
1. A. Removethethreecuppedwashersand hexnutsfromweld
studsaroundtheopeningonthesideoftheimpellerhousing.
SeeFigure5.
.
f
Figure3
B.Removethehexlocknut,spacers,andhexboltfromthetopof
theimpellerhousing.
A.Alignthechutedeflectorin positiononthedischargeopening
andinserthexboltwithspacerthroughhingeonchute
deflector(spacersfit insideofhinges).SeeFigure4.
f
Figure5
B.Removethehexbolts,flatwashersandlocknutsfromthetwo
holesontheupperendofthe supportbrace.
A.Alignthechipperchuteovertheweldstuds,sothe slotinthe
bottomofthechuteisfacingdown.SeeFigure6.
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/
/
/
/
/
/
/
/
/
/
/ /
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/ i"
/ ,/
/ /s
/
/
/
/
/
/ ,
/ /
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Figure4
Figure6
B.Placesecondspaceroverhexboltinsideotherhingeand
securewithhexlocknut.
C. Securebothsidesofchutedeflectorto impellerhousingusing
wingknobspreviouslyremoved.
B.Securechipperchutewiththethreecuppedwashers(cupped
sideagainstthechipperchute)andhexnutspreviously
removed.Donottightenthenutsatthistime.
Thechippershredderwasshippedwithoneendof thesupport
bracealreadysecuredtothe lowerframe.Loosenbutdonot
removetheboltssecuringthebracetotheframe.
A.Aligntheholesinthechutewiththeholesin thetopofthe
braceand attachbracetochipperchutewithhardware
9
previouslyremoved.Theflatwashersshouldbe placedunder
theboltheadsandagainsttheinsidesurfaceoftheplastic
chipperchute.Tightensecurely.SeeFigure7.
Figure7
B.Tightentheboltssecuringthesupportbracetotheframe.
C.Tightenthethreenutsontheweldstudsholdingthechipper
chuteto theimpellerhousing.
ATTACHING THE BAG
f
Toattachthebag:
A. Placetheopeningofthebagcompletelyoverthechute
deflector.
B.Pullon thedrawstringuntilthebagistightaroundchute
deflectoropening.
C.Clipdrawstringbackon itself,tightagainstchutedeflectorto
secureintoposition.SeeFigure8.
Figure8
10
(large) HopperAssembly
ReleaseRod
(small) Chipper Chute
Tamper--=_
GasFill
@
Chute
Deflector
Figure9
Nowthatyouhavesetupyourchippershredderforoperation,get
aquaintedwith itscontrolsandfeatures.Theseare describedbelow
andillustratedon thispage.Thisknowledgewillallowyoutouseyour
newequipmenttoits fullestpotential.
CHIPPER CHUTE
Allowstwigsandsmallbranchesup to3" indiametertobefedintothe
impellerforchipping.SeeFigure9.
Theoperationof anychippershreddercan resultinforeignobjects
beingthrownintotheeyes,whichcandamageyoureyesseverely.
Alwayswearthesafetyglassesprovidedwiththisunitor eyeshields
beforechippingor shreddingandwhileperforminganyadjustments
or repairs.
TAMPER
HOPPER ASSEMBLY
Allowleavesandsmallbranchesupto 1/2diameterto befedintothe
impellerforchippingandshredding.Materialcanberakedintohopper
assemblybyloweringthehopperassembly.SeeFigure9.
RELEASE ROD
Thereleaserodislocatedon theimpellerbracketassemblyandit
isusedto releaseorlockthehopperwhenraisingor lowering.See
Figure9.
CHUTE DEFLECTOR
Chippedandshreddeddebrisisdischargedoutthechutedeflector.
Theunitmaybeoperatedwithorwithoutthecollectionbagattachedto
thechutedeflector.SeeFigure9.
Thisplugisinsertedintothechipperchuteto pushtwigsandsmall
branchestowardstheimpellerbladeswithoutendangeringyourhands.
TH ROTTLE CONTROL
Thislevercontrolstheenginespeedandstopfunction.Throughthree
separatepositionsontheleverfromleftto right,theoperationisas
follows:
Start/Run Slow/Idle Engine Off
CHOKE CONTROL
Thechokecontrolisusedtochokethecarburetorand assistinstarting
theengine.
Meets ANSI Safety Standards
CraftsmanYardVacuumsconformtothesafetystandardoftheAmericanNationalStandardsInstitute(ANSI).
11
GAS AND OIL FILL-UP
Oil (one bottle shipped with unit)
FirstTimeUse
1. Removeoil fillplug.
2. Withthechippershredderonlevelground,usea funneltoempty
entirecontentsofoil bottleprovidedintotheengine.
3. Replaceoil fillplugandtighten.
Subsequent Uses
Onlyusehighqualitydetergentoil ratedwithAPIserviceclassification
SF,SG,or SH.Selecttheoil'sSAEviscositygradeaccordingtothe
expectedoperatingtemperature.Followthechartbelow.
_older _ 32°F _Warmer'_
OilViscosity Chart
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Alcoholblendedfuels(calledgasoholor usingethanolor methanol)
canattractmoisturewhichleadstoseparationand formationofacids
duringstorage.Acidicgascandamagethefuelsystemofanengine
whileinstorage.
Toavoidengineproblems,thefuelsystemshouldbeemptiedbefore
storagefor30daysorlonger.Drainthegastank,starttheengine
andletitrununtilthefuellinesandcarburetorare empty.Use
freshfuelnextseason.See STORAGEInstructionsforadditional
information.
Neveruseengineorcarburetorcleanerproductsinthefueltankor
permanentdamagemayoccur.
NOTE:Checkthefuellevelperiodicallytoavoidrunningoutofgaso-
linewhileoperatingthechippershredder.Iftheunitrunsoutofgasas
itischipping,itmaybe necessarytounclogthedischargeareabefore
itcanbe restarted.RefertoSERVICEANDMAINTENANCEsection.
Althoughmulti-viscosityoils(5W30,10W30,etc.)improvestarting
incoldweather,theywillresultinincreasedoil consumptionwhen
usedabove32°E Checkyourengineoillevelmorefrequentlytoavoid
possibleenginedamagefromrunninglowon oil.
1. Checktheoil levelbyremovingtheoilfillplugand lookinginto
theoil fillhole.Oil shouldbevisibleup tothethreadsof theoil fill
plug,almosttothepointofoverflowing.Fillifnecessary.Capac-
ity isapproximately28oz.Overfillingcancausea hazardous
situation,be suretowipeup anyspilledor excessoil.
2. Replaceoil fillplugandtighten.
3. Keepoil levelatFULL.Runningtheenginewithtoolittleoil can
resultinpermanentenginedamage.
Gasoline
Useextremecarewhenhandlinggasoline.Gasolineisextremely
flammableandthevaporsareexplosive.Neverfuelmachineindoors
orwhiletheengineishotor running.Extinguishcigarettes,cigars,
pipes,andothersourcesof ignition.
1. Removefuelcapfromthefueltank.
2. Makesurethecontainerfromwhichyouwillpourthegasolineis
cleanandfreefromrustor foreignparticles.Neverusegasoline
thatmaybestalefromlongperiodsofstorageinitscontainer.
Gasolinethathasbeensittingforanyperiodlongerthanfour
weeksshouldbeconsideredstale.
3. Fillfueltankwithclean,fresh,unleadedregulargasolineonly.Do
notusegasolinecontainingMETHANOL.Replacefuelcap.
TO START ENGINE
1. Attachsparkplugwireand rubberboottosparkplug.
2. Filltankto nomorethan1/2inchbelowbottomoffillerneckto
providespaceforfuelexpansion.
3. Turnthefuelshut-offvalvetotheONposition.
4. MovethechokeleverontheenginetoCHOKEI'_1 position.(A
warmenginemaynotrequirechoking.)See Figure10.
5. MovethrottlecontroltoSTART/RUN(Rabbit)_ position.See
Figure10.
6. Standingbehindtheunit,graspstarterhandleand pullropeout
untilyoufeela drag.
f
Figure10
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12
NOTE:A noisewillbe heardwhenfindingthestartofthecompression
cycle.Thisnoiseiscausedbytheflailsandfingers,whicharepartof
theshreddingmechanism,andit shouldbe expecteduntiltheimpeller
reachesfull speed.
7. Pulltheropewitha rapid,continuous,fullarmstroke.Keepa firm
griponthestarterhandle.Lettheroperewindslowly.
8. Repeat,if necessary,untilenginestarts.Whenenginestarts,
movechokecontrolgraduallytowardtheRUNIJtIposition..
9. If enginefalters,movechokecontrolbacktowardtheCHOKE
I'o,I positionand repeatsteps5 though8.
10. ALWAYSkeepthethrottlecontrolin theSTART/RUNposition
whenoperatingthechippershredder.
TO STOP ENGINE
1. Movethrottlecontrollevertoslow(turtle)'_ position.
Wheneverpossible,graduallyreduceenginespeedbefore
stoppingengine.
2. MovethrottlecontrollevertoSTOPI or OFFposition.
3. Turnthefuelshut-offvalvetotheOFFposition.
4. Disconnectsparkplugwireandgrounditagainsttheengineto
preventaccidentalstartingwhiletheequipmentisunattended.
SHREDDING
Yardwastesuchas leavesandpineneedlescanbe placedin the
hopperforshredding.Aftermaterialhasbeenprocessedbythe shred-
derbladeandflails,itwillbeforcedoutofthechutedeflector,and,if
attached,intoadebriscollectionbag.
Observethefollowingguidelineswhenshreddingyarddebris:
Neverattempttoshredmaterialotherthannormalyarddebris
(leaves,twigs,pinecones,etc.).
Avoidshreddingfibrousplantssuchastomatovines,palmfronds,
etc.,untiltheyare thoroughlydriedout. Freshvinesdo notshred
wellandtendtowrapthemselvesaroundtheimpellerandflails.
Placereasonableamountsofdebrisintothehopperata time.Do
notoverloadthehopper.
Allowthematerialin thehopperto bedrawnintothebladesand
shreddedbeforeaddingadditionaldebristothehopper.Failureto
duesomayresultin acloggedhopper,cloggedchutedeflectoror
a stalledengine.
CHIPPING
Branchesupto3"in diametercanbefedintothechipperchute.
Observethefollowingguidelineswhenchippingbranches:
Keepbothhandsfirmlyonthebranchasyoufeeditintothe
chipperchute.
Neverfeedmorethanonebranchintothechipperchuteata time.
Neverfeedanythingotherthanbranches(orwood)intothe
chipperchute.
Applyintermittentpressure(force,inshortpulses)whilefeeding
larger(3-inchdiameter)branchesintothechipperchute,toavoid
boggingor stallingtheengine.
IMPORTANT:Neverfeedbrancheswitha diametergreaterthan
three(3)inchesintothechipperchute.Doingsocanresultin serious
damageto yourunit'schipperblades,flailsor impeller.
NOTE:Forbestperformance,alwaysoperatetheunitwith sharp
chipperblades.If a noticeablelossin performanceisencountered
whilechippingbranches,thechipperbladesshouldbe replaced.
LOWERING THE HOPPER ASSEMBLY
1. Withonehandgraspthehandleatthetopofthehopperassem-
blyandlift slightly.
2. Withtheotherhandpulloutonthereleaserodandlowerthe
hopperassemblytotheground.
TO EMPTY BAG
1. Un-clipdrawstringandloosenbagfromchutedeflectoropening.
2. Emptybagandreattachtothedischargechuteopening.Pullon
thedrawstringuntilthebagistightaroundthechuteopeningand
clipthedrawstringtightagainstthechutedeflector.
IMPORTANT:Theflailscreenislocatedinsidethehousingin the
dischargearea.Iftheflailscreenbecomesclogged,removeand
cleanas instructedintheServiceand Maintenancesection.Forbest
performance,itisalsoimportanttokeepthechipperbladessharp.
13
MAINTENANCE SCHEDULE
Beforeperforminganytypeofmaintenance/service,disengageall
controlsandstoptheengine.Waituntilallmovingpartshavecometo
acompletestop.Disconnectsparkplugwireandgrounditagainstthe
enginetopreventunintendedstarting.Alwayswearsafetyglassesduring
operationorwhileperforminganyadjustmentsor repairs.
Followthemaintenanceschedulegivenbelow.Thischartdescribes
serviceguidelinesonly.UsetheServiceLogcolumntokeeptrackof
completedmaintenancetasks.Tolocatethe nearest SearsService
Centeror toscheduleservice,simplycontactSearsat
1-800-4-MY-HOME®.
EachUse
1st5 - 8 hours
25 hours
Annuallyor 50hours
Annuallyor 100hours
BeforeStorage 1. Fuelsystem
Underheavyloador inhightemperatures
.
2.
3.
1.
1.
2.
3.
1.
2.
1.
Engineoillevel
Looseormissinghardware
Unitandengine.
Engineoil
Engineoill-
Aircleaner
Controllinkagesand pivots
Engineoil
Muffler
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
replacesparkplug.
1. Runengineuntilit stopsfromlackof
fueloradda gasolineadditivetothe
gasin thetank.
Alwaysstopengineanddisconnectsparkplugwirebeforeperforming
Ianymaintenanceoradjustments.Alwayswearsafetyglassesduring
[operationor whileperforminganyadjustmentsor repairs.
GENERAL RECOMMENDATIONS
Alwaysobserveallsafetyrulesfoundonproductlabelsandin
thisoperator'smanualwhenperforminganymaintenance.Safety
rulescanbefoundonthe productlabelsandin thisOperator's
Manualbeginningon page3.
Thewarrantyonthischippershredderdoesnotcoveritemsthat
havebeensubjectedtooperatorabuseor negligence.Toreceive
fullvaluefromwarranty,operatormustmaintaintheequipmentas
instructedhere.
Someadjustmentswillhavetobe madeperiodicallytomaintain
yourunitproperly.
Periodicallycheckall fastenersand makesurethesearetight.
ENGINE MAINTENANCE
Checking the Spark Plug
Cleansparkplugandresettheelectrodegapto0.030"atleastoncea
season;replaceevery100hoursofoperation.
f
Electrode
Porcelain
,L
.030 (.76 mm) gap
Figure 11
Cleanareaaroundthesparkplugbase.Donotsandblastspark
plug.Sparkplugshouldbecleanedbyscrapingor wirebrushing
andwashingwitha commercialsolvent.
Removeandinspectthesparkplug.Checkgaptomakesureitis
setat .030".SeeFigure11.
Replacethesparkplugif electrodesare pitted,burned,or the
porcelainiscracked.
14
Servicing the Air Cleaner
Donotusepressurizedairor solventstocleantheaircleaner
cartridge.
Theair cleanerpreventsdamagingdirt, dust,etc.,fromenteringthe
carburetorand beingforcedintotheengineandisimportanttoengine
lifeandperformance.Neverruntheenginewithoutan aircleaner
completelyassembled.
Replacetheaircleanerevery25 hoursofoperation.
1. Loosenscrewsthatholdtheairfiltercover.
2. Opencoverandremoveair filter.See Figure12.
f
Cover
Air Filter
\
y
Figure12
3. Discardold airfilter.
4. installnewairfilter.
5. Closethecoverandtightenscrews.
NOTE:Ifthefilteristornordamagedin anyway,replaceit.
Check Engine Oil
1. Makesureengineislevelandtheareaaroundoilfillcapisclean.
2. Removeoilfillcap.
3. Oilshouldbe nearthetopoftheoil fillcapthreads,almostto the
pointofoverflowing
Change Engine Oil
* Onlyusehighqualitydetergentoil ratedwithAPIservice
classificationSF,SG,orSH.Selecttheoil'sSAEviscositygrade
accordingtotheexpectedoperatingtemperature.Refertoopera-
tionsectionforviscositychart.
. Changeengineoil afterthefirstfivetoeighthoursofoperation,
andeveryfifty hoursoreveryseasonthereafter.Changeoil every
twentyfivehourswhenoperatingengineunderheavyloadorin
hightemperatures.
To Drain Oil
1. Runtheengineto warmtheoil.
2. WithengineOFFbutstillwarm,disconnectthe sparkplugwire
and keepitawayfromsparkplug.
3. Removeoil draincaplocatedatthebaseoftheengine,anddrain
oil intoan appropriatereceptacle.SeeFigure13.
Oil Drain
End Cap _"
J
Figure13
e
Usedoil isa hazardouswasteproduct.Disposeofusedoil properly.
IDonotdiscardwithhouseholdwaste.Checkwithyourlocalauthori-
_tiesorSearsServiceCenterforsafedisposal/recyclingfacilities.
4. Whenengineisdrainedofall oil,replaceandtightentheoil drain
cap.
5. Withtheenginelevel,refillwith approximately28oz. offreshoil.
Filltheoil upintothethreadsoftheoilfill plug,almosttothepoint
ofoverflowing.
6. Replacetheoilfill plugandwipeupanyoil thatmayhavespilled
or overflowed.
7. Replacesparkplugwirebeforestarting.
15
Service IVluffler
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 reducetheriskofoverheat-
ingandignitionofaccumulateddebris.
Donotusewatertocleanengineparts.Watercouldcontaminatefuel
system.Usea brushor drycloth.
Carburetor Adjustment
Thecarburetoronthis engineisnotadjustable.
Engine Speed
LUBRICATION
Donot,attempttoaltertheenginespeedbytamperingwiththe
enginesgovernorlinkage.Doingsocouldresultin seriouspersonal
Iinjuryanddamagetotheengine.TheengineRPMhasbeensetat
thefactory.
HopperAssembly- Lubricatethepivotpointson thehopper
assemblywithlightoiloncea season.
DischargeChute-Lubricatethepivotpointsonthedischarge
chutewithlightoiloncea season.
ReleaseRod-Lubricatethereleaserodand springwith lightoil
oncea season.
CLEAN EQUIPMENT
Cleanthechippershredderthoroughlyaftereachuse.
Washbagperiodicallywithwater.Allowtodrythoroughlyin
shade.
Iftheflailscreenbecomesclogged,removeandcleanas
instructedbelow.
NOTE:Cleaningwitha forcefulsprayofwaterisnotrecommendedas
itcouldcontaminatethefuelsystem.
REMOVING THE FLAIL SCREEN
Beforeperforminganytypeofmaintenanceonthemachine waitfor
all partsto stopmovinganddisconnectthesparkplugwire. Failure
tofollowthis instructioncouldresultinpersonalinjuryor property
damage.
Ifthedischargeareabecomesclogged,removetheflailscreenand
cleanareaasfollows:
Stoptheengine.Makecertainthechippershredderhascometo
a completestop.
Disconnectsparkplugwirefromsparkplugandgroundagainst
theengine.
A. Removethebagandtwowingknobsoneachsideofthechute
deflector.SeeFigure14.
.
3.
f
/
s /
s'
/ /
/
//
/
j
Figure14
B.Liftthechutedeflectoruptokeepitoutoftheway.
C.Removethetwo hairpinclipsfromeachclevispinwhich
extendthroughthehousingand removepins.
D.Removetheflailscreenfrominsidethehousingandcleanthe
screenbyscrapingor washingwith water.SeeFigure14.
4. Reinstallthescreen,makingcertaintoreassembletheflailscreen
withthecurvesidedown.
5. Reattachthechutedeflectorwiththehardwarepreviouslyremoved
andconnectthebagto unit.
SHARPENING OR REPLACING CHIPPER
BLADES
16
1. Disconnectthesparkplugwireandgroundagainsttheengine.
2. Removetheflailscreenasinstructedinthe previoussection.
3. Removethechipperchutebyremovingthreehexnutsand
washers.
4. Removethechipperchutesupportbracefromtheframeby
removingthehexbolts.
5. Rotateimpellerassemblybyhanduntilyoulocateoneoftwo
chipperbladesinthechipperchuteopening.
6. Removethebladebyremovingtheinternalhexscrews,lock
washers,andhexnutswhichsecureittotheimpeller.Retainthe
hardware.SeeFigure15.
/
/
Figure15
NOTE:Usea3/16"hexkey(Allen)wrenchon theoutsideoftheblade
anda 1/2"box(or socket)wrenchontheinsideoftheimpeller.Hold
theAllenwrenchstationaryand rotatethebox(or socket)wrenchto
loosenthenut.
7. Installa replacementblade(PartNo.742-0544)withthehardware
removedearlieror sharpenand replaceexistingblade.
IMPORTANT:Whensharpeningtheblade,protecthandsbyusing
gloves.Followtheoriginalangleofgrindandmakesuretoremovean
equalamountfromeachblade.
8. Toreplacetheotherblade,rotatetheimpellertoexposethe
secondbladeand repeatthestepsabove.
NOTE: Makecertainbladesare reassembledwiththesharpedge
facingthesamedirectionaswhenremoved.Torquehardwareto250
- 300in.Ibs.
Theimpeller'schipperbladesandshredderbladearesharp.Wear
leatherworkglovesto protectyourhands.
SHARPENING OR REPLACING THE
SHREDDER BLADE
1. Stoptheengineandmakecertainthatallmovingpartshave
cometoa completestop.
2. Disconnectthesparkplugwireandgroundagainsttheengine.
3. Lowerthehopperassemblyandplacea blockundertheflailhousing.
4. Removethesix hexlocknutsandflatwashersfromtheweld
studsontheflailhousing.Retainthehardware.
5. Carefullyseparatethehopperassemblyfromtheimpelleras-
semblyandremovetheshredderplate.Theshredderplatecanbe
identifiedbyreferringtoitem29 in thepartslist onpage20& 21.
NOTE:Whenreassemblingtheshredderplate,makecertainthe
embossedtabfacesinwardtowardstheimpeller.
6. Removethetwowingknobsthatsecurethechuteddlector and
raisethechute.
7. Inserta 1/2"or 3/4"diameterpipethroughtheflailscreenintothe
impellertokeepitfromturningor removetheflailscreenand
inserta pieceofwoodintothechuteopening.
8. A. Removethetwointernalhexscrews,lockwashers,and hex
locknutswhichsecuretheshredderbladetotheimpeller.
B.Removethehexbolt,lockwasher,andflatwasherto
completelyfreeshredderblade.SeeFigure16.
f
Weld
FlailHousing
Figure16
9. Installa replacementblade(PartNo.742-0544)with thehardware
removedearlierorsharpenand replaceexistingblade.
IMPORTANT:Whenreassemblingtheshredderblade,tightencenter
bolttobetween550and700in.-Ibs,andthetwooutsideboltsto
between250and350in.-Ibs.
NOTE:Usea 3/16"hexkey(Allen)wrenchontheoutsideofthe
shredderbladeanda 1/2"box(or socket)wrenchon theinsideofthe
shredderblade.HoldtheAllenwrenchstationaryand rotatethebox
(orsocket)wrenchtoloosenthenut. Usecautionwhenremovingthe
bladetoavoidcontactingtheweldstudson housing.
IMPORTANT:Whensharpeningtheblade,followtheoriginalangle
ofgrindasa guide.It isextremelyimportantthateachcuttingedge
receivesan equalamountofgrindingtopreventan unbalancedblade.
An unbalancedbladewillcauseexcessivevibrationwhenrotatingat
highspeedsandmaycausedamagetotheunit.Thebladecanbe
testedbybalancingiton ascrewdriverornail.Removemetalfromthe
heavysideuntilitisbalancedevenly.
17
Neverstorechippershredderwithfuelin tankindoorsor in poorly
ventilatedareaswherefuelfumesmayreachan openflame,spark,
or pilotlightasona furnace,waterheater,clothesdryer,or gas
appliance.
PREPARING THE ENGINE
Forenginesstoredover30 days:
1. Topreventgumfromforminginfuelsystemor oncarburetor
parts,runengineuntilit stopsfromlackof fuelor adda gasoline
additivetothegasinthetank.Ifyouusea gasadditive,runthe
engineforseveralminutestocirculatetheadditivethroughthe
carburetor--afterwhichtheengineandfuelcanbestoredup to
six months.
2. Whileengineis stillwarm,changetheoil.SeeChangeEngineOil
in SERVICEANDMAINTENANCEsection.
3. Removesparkplugand pourapproximately1oz. (30ml)ofclean
engineoil intothecylinder.Pulltherecoilstarterseveraltimesto
distributetheoil,andreinstallthe sparkplug.
4. Cleanengineofsurfacedebris.
PREPARING THE CHIPPER SHREDDER
* Whenstoringthechippershredderinan unventilatedor metal
storageshed,careshouldbetakento rustproofthenon-painted
surfaces.Usinga lightoil orsilicone,coattheequipment,
especiallyanysprings,bearings,andcables.
, Removealldirt fromexteriorofengineandequipment.
, Followlubricationrecommendations.
o Storeequipmentin a clean,dryarea.Donotstorenextto
corrosivematerials,suchasfertilizer.Donotstoreinan area
whereequipmentispresentthatmayusea pilotlightor hasa
componentthatcancreatea spark.
18
Beforeperforminganytyped maintenance/service,disengageall
controlsandstoptheengine.Waituntilallmovingpartshavecometo
acompletestop.Disconnectsparkplugwireandgrounditagainstthe
enginetopreventunintendedstarting.Alwayswearsafetyglassesduring
operationorwhileperforminganyadjustmentsor repairs.
Enginefailstostart
Enginerunserratically
1. Throttlelevernotincorrectstartingposition
2. ChokenotintheCHOKEposition
3. Sparkplugwiredisconnected
4. Faultysparkplug
5. Fueltankemptyor stalefuel
6. Cannotpullrecoilcord
7. Engineflooded
1. UnitrunningonCHOKE
2. Sparkplugwireloose
3. Stalefuel
4. Waterordirtinfuel system
5. Dirtyair cleaner
6. LowengineRPM
7. Carburetoroutofadjustment
1. Engineoillevellow
2. Airflowrestricted
Engineoverheats
Enginehesitatesat highRPMs 1. Sparkpluggap settooclose
Engineidlespoorly 1. Fouledsparkplug
2. Dirtyair cleaner
Excessivevibration 1. Loosepartsor damagedimpeller
Unitdoesnotdischarge 1. Chuteddlector clogged
Rateofdischargeslows
considerablyorcompositionof
dischargedmaterialchanges
2. Foreignobjectlodgedin impeller
3. LowengineRPM
1. LowengineRPM
2. Chipperbladedull
1. Movethrottleleverto START/RUNposition.
2. MoveCHOKEtotheCHOKEposition.
3. Connectwiretosparkplug.
4. Clean,adjustgap,or replace.
5. Filltankwithclean,freshgasoline.
6. Obstructionlodgedin impeller.Disconnectspark
plugwireandremovelodgedobject.
7. Waita fewminutesto restart.
1. MovechokelevertotheRUNposition.
2. Connectandtightensparkplugwire.
3. Filltankwithfreshgasoline.
4. Refillwithfreshfuel.
5. Cleanor replaceair cleanerfilter.
6. Alwaysrunengineatfullthrottle.
7. ContactyourSearsParts& RepairCenter.
1. Fillenginewith properamountandtype ofoil.
2. Cleandebrisfromaroundtheengine'scoolingfins
andblowerhousing.
1. Removesparkplugandadjustgap.
1. Replacesparkplugandadjustgap.
2. Replaceair cleanercartridge.
1. Stopengineimmediatelyanddisconnectsparkplug
wire.ContactyourSearsParts& RepairCenter.
1. Stopengineimmediatelyanddisconnectspark
plugwire.Cleanflailscreenandinsided discharge
opening.
2. Stopengineanddisconnectsparkplugwire.
Removelodgedobject.
3. Alwaysrunengineatfullthrottle.
1. Alwaysrunengineatfullthrottle.
2. Replaceor sharpenchipperbladeor contactyour
SearsParts& RepairCenter.
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19
Craftsman Chipper Shredder -- Model No. 247.77638
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MTD 24A464G799 Owner's manual

Category
Garden shredders
Type
Owner's manual

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