Case J40 User manual

ROTARYMOWER
J40, J44,J46
Operator'sManualNo.9-50552
JI Case
ATennecoCompany
JENNECO
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INTRODUCTION
Thismanualcontainsrecommendedoperatingprocedures,
safetyrules,adjustments,maintenanceinformation,assem-
blyandmountinginstructions.Readthismanualcarefully
beforeoperatingyourrotarymower.
YourJ I CaseCompactTractorDealeriswellqualifiedto
answeranyfurtherquestionsyoumighthaveconcerning
yourrotarymower.Also,iftheneedshouldarise,his
ServiceDepartmentwithfactorytrainedtechnicians.
genuineCasereplacementpartsandtherequiredfacilities
isinthepositiontoprovideproperrepairsintheshortest
timepossible.
Thedefinitions"Right,Left,Front,andRear"asused
throughoutthismanualrelatetothetractorandrotary
mowerastheoperatorisseatedfacingforwardinthe
normaloperatingpositionofthetractor.
MOWERAPPLICATIONCHART
MOWERMODEL RECOMMENDEDTRACTORMODEL
J-40
J-44
J-46
210, 220,222
222, 224,444,446,644,646
224, 444,446,644,646
BELTAPPLICATIONCHART
TRACTORMODEL
210All
220PriortoS/N9656747
220S/N9656747andafter
222PRIORTOS/N9658189
222S/N9658189andafter
224All
442All
444PriortoS/N9661261
444S/N9661261andafter
446All
644PriortoS/N9698343
644S/N9698343andafter
646All
BELTPARTNUMBER
18708
17050
18708
17050
18708
18708
17052
17052
18709
18709
17052
C21931
013184
Beltshippedwithloadertractor
SPECIALINFORMATION
TRACTORMODEL
446All C19652specialoffsetlift
linksuppliedwithtractor
FORINSTALLATIONON
PRIORMODELTRACTORS
TRACTORMODEL USEKIT
220, 222priortoS/N9646800
442, 444priortoS/N9646800 H-38
H-39
3
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SAFETYRULES
A
Thissafetyalertsymbolindicatesimportantsafetymessagesinthis
manual. Whenyouseethissymbol,carefullyreadthemessagethat
followsandbealerttothepossibilityofpersonalinjuryordeath.
A
Regardyourrotarymowerasa
pieceofpowerequipmentandbe
surethismanualisreadandunder-
stoodbyallwhooperateit.
A
CAUTION: Fillgastankoutof
doorsandavoidspillinggasoline.
Donotfilltankwithgasolinewhile
smokingorwhileengineisrunning.
Maintainyourtractorandrotary
mowerintopoperatingcondition.
CAUTION: Neverallowchildren
^^^L oryoungteenagerstooperatethe
^^V^^^tractorandrotarymower.
A
CAUTION: Clearthelawnorarea
tobemowedofsticks,stonesorany
hardobjectswhichcouldcomein
contactwiththebladesandbe
hurledoutthedischargeopening.
CAUTION: Nevergetonoroff
^ftthetractorwhilethemoweris
A
CAUTION: Donotpermitchildren
orpetsintheareawhilemowing
andneverdirectthemowerdis-
chargeatbuildings,people,pets,
windowsorcars.
CAUTION: OperateinLowrange
^anduseextremecautiononslopes
^^L^^^ orinclines.Alwaysbackup,and
^^m^^^ drivedownslopes.Mowinthe
forwardanddowndirectiononly.
WARNING:Keepfeetandhands
A
awayfromdischargeopeningand
makenorepairsunlessboththe
tractorengineandattachmentdrive
areshutoffandthekeyisremoved
fromthetractor.
ACAUTION:
Besureyouknowhow
tostopthetractorandmowerata
momentsnotice.
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A
CAUTION: Givecompleteandun-
dividedattentiontothejobathand.
A
CAUTION: Disengageattachment
drivelever,stopengineandremove
keyandsparkplugwire(s)before
makingadjustments.
A
CAUTION: Stopengine,disengage
attachmentdrive,setparkingbrake
andremovekeywhentractoris
unattended.
CAUTION: Unbalancedbladesare
A
ahazardandwillcausepremature
wearandfailureofbearingsand
spindles.Ifthebladescannotbe
balancedbyresharpening,replace
themwithnewones.
A
CAUTION: Donotallowanyone
otherthantheoperatortorideon
thetractor.
ACAUTION:
Shutoffengine,allow
enginetocoolandremovekeyand
sparkplugwire(s)beforereplacing
mowerdrivebelt.
CAUTION: Disengageattachment
driveclutchwhensomeone
^^ft^^kapproachesorwheneverthemower
^^^^^^^isintransportortheliftedposition.
A
CAUTION: SpinningBlade- Keep
handsandfeetfromunderthe
mowerdecktopreventinjury.
A
CAUTION: Stopandinspectthe
mowerfordamageimmediatelyaf-
terstrikinga foreignobjectand
repairdamagebeforerestartingand
operatingthemachine.
WARNING:Besurethattheat-
A
tachmentdriveclutchisoff,the
engineisshutoff,thekeyremoved
andthebladeshavestopped spin-
ningbeforeattemptingtocleana
pluggeddischargechute.
5
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OPERATINGCONTROLS
Theprinciplecomponentsandcontrolsofyourrotary
mowerareidentifiedinFigure1 withthesamedescription
usedthroughoutthismanual.
Allcontrolsarelocatedneartheoperator'spositiononthe
tractor.Themowerbladesareplacedinmotionbyen-
gagingtheattachmentdriveclutchlever.Thedesired
mowingheightcanbeadjustedwiththeheightselection
lever.
Generallybestperformanceisobtainedwiththetransmis-
sioninLowrangeandtheenginerunning% tofullthrottle.
Thethrottleshouldbesetaslowaspracticaltoobtain
maximumfueleconomybuthighenoughtopreventengine
lugdownorlaborwhichcouldcauseoverheatingandpoor
mowing. Adjustthetractorgroundspeed withthetravel
leveraccordingtoyourmowingconditions.
TRACTORTRAVELLEVER
FIGURE1 MODEL446WITHMODELJ-4648"ROTARYMOWER
OPERATION
1. Keepmowerbladessharpandbalancedascoveredin
theMaintenanceSectionofthismanual.
2. Operateengineatapproximately% tofullthrottleand
regulatethegroundspeedTravelLeveraccordingto
mowingconditions.Asa generalrule,setthethrottle
aslowaspracticaltoobtainmaximumfueleconomy
buthighenoughtoavoidenginelugdownorlabor
whichcouldcauseoverheatingandpoormowingper-
formance.Unlessgrassisunusuallylight,always
operatein"Low"speed range.
3.Ifgrassisheavyandhigherthannormal,resultscanbe
improvedbymowingtwice.Makethefirstcutwiththe 6
mowersethigherthannormal;thenrepeatwiththe
mowersetatdesiredfinishedcutheight.Whenmowing
heavygrass,alwaysdischargeclippingsawayfromthe
uncutarea.
WARNING:Besurethattheat-
tachmentdriveclutchisoff,the
engineisshutoff,thekeyremoved
^^^^^^andthebladeshavestopped spin-
^^K^^Bningbeforeattemptingtocleana
pluggeddischargechute.
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4. Figures2 and3 illustratetwosystemsformowing.If
thegrassishighorheavy,alwaysmowtothrowthe
clippingsawayfromtheuncutarea.Figure2.Ifthe
grassislightandmorethoroughmulchingisdesired,
dischargetheclippingstowardthecenteroftheuncut
area. Figure3.Whenmowinginthismanner, a final
stripofmulchedclippingsaboutthreetofourfeetwide
willremainnearthecenterofthelawn.Thiscanbe
easilyrakeduptoleavea wellgroomedappearance.
FIGURE3
5.Trimmingwillbeneaterandcloserbyusingtheright
sideofthemowersincetheclippingswillbedischarged
awayfromtheobject.Alsothesafetyshieldoverthe
dischargeopeningpreventsmowingasclosetoobjects.
CAUTION: Nevergetonoroff
thetractorwhilethemoweris
6.Donotsteponthemowerdeckwhengettingonoroff
thetractor.Ifmountingthetractorfromtherightside,
placeyourrightfootontherightfootrest,yourright
handonsteeringwheelandlefthandontheseatback
andstepontothetractor,swingingyourleftfoot
throughbetweenthesteeringwheelandseat.
Whenmountingfromtheleftside,startwithyourleft
footontheleftfootrest,yourlefthandonsteering
wheelandrighthandonseatbackandstepontotractor
swingingyourrightfootthroughbetweensteering
wheelandseat.Dismountthetractorusingthereverse
oftheaboveprocedures.
7.Themechanicalorhydraulicliftleverisusedtoraise
themowerintotransportandtoloweritintocutting
position. A slightpullingpressureonthemechanical
leverwillpermitthereleasebuttontobemoreeasily
depressed.
Lowerthehydraulicliftuntiltheliftarmsare posi-
tionedmidwayintheliftlinkslots.Thiswillallowthe
mowerdeckandgaugewheelstofollowthecontourof
theground.Donotplacethehydraulicliftcontrol
leverinthehydraulicfloatpositionwhenmowing.
TheHeightSelectionsettingsareexplainedinthe
adjustmentssectionofthismanual.
8.Alwaysengagetractorandmowerdrivesystems
smoothly.
A
Becertainwhoeveroperatesthe
mowerhasreadandunderstands
theSafetyRulesinthefrontofthis
manual.
7
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ADJUSTMENTS
CAUTION: Disengageattachment
drivelever,stopengine and remove
keys and sparkplugwire{s)before
makingadjustments.
1. HeightSelectionLever. See Figure 4.
Themowercuttingheight is adjustablefrom V/j" to
3%" inV2" increments.
Tochangecuttingheight:
a. Raisemowerintotransportposition to relieve
weightfrom the heightselectionlever.
b.Pulloutward onthe heightselectionknob.
c.Move the lever upor down tothe desiredheight.
d. Pushknobinto the holeselected.
2. GaugeWheels. See Figure 4.
Alwaysoperate the mowerwith the gauge wheels on
theground and all weight offthe mowerliftlinks to
obtain a level and uniform cut.Be sure the gauge
wheelsclear the groundwhentransporting the mower.
GAUGEWHEEL
FIGURE 4 ADJUSTMENTS
3.DriveBeltTension. See Figure 5.
Themowerdrivebelt is propertytensionedwhen the
frontidlerspring has1/8 inch(approximately the
thickness oftwo nickels)gapsbetween its coils.
IMPORTANTCheck and adjust the tension onanew
beltafter the first 20 minutes andthe
nexthour of mowingsince itis normal
for a belt to stretchslightlyduring its
initialrun-inperiod.
Toincrease the belttension,turn the adjustingcrank in
acounterclockwisedirectionwhilefacing the front of
thetractor.
Todecrease the belttension orto install or remove the
belt,turn the adjustingcrankclockwise.
DECK DRIVE
PULLEY
1 WIND KEV CLOCKWISE
BV HAND ASFARA!
POSSIBLE AND PLACE
ATTACHMENTDRIVE IN
ENCAGEMEM POSITION
JiINSTALL BELTOVER
PULLEYS AND IDLER
PULLEYS AS SHOWN
DOUBLECHECKTHATTHE
BELT IS PROPERLYSEAT-
ED IN EACHPULLEYWITH
ONLY ONEK DECREE
I*IST BETWEENSUCCEED-
INGPULLEYS
J WIND KEV COUNTER.
CLOCKWISE UNTIL SPRING
SHOWS t.'fl INCH GAPBE
IWEEN COILSAS VIEWED
FROMTHESIDE THE1*0
IDLER PULLEYS SHOULD BE
APPRO" EVEN OB CLOSE
TO A COMMON CtNTER
LINE
* AT PERIODIC INTERVALS
RECHECK FOR\ft INCH
CLEARANCEBETWEEN
COILS AND ADJUST AS
REQUIRED
FIGURE 5
8
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4. MowerFore-AftLevelingLinks.SeeFigure6.
Cleancuttingandminimumhorsepowerconsumption
aredependentuponthemowerbeinglevelforeandaft.
Toadjust,locatethetractorandmowerona level
surfacesuchasyourgaragefloorandplacetheHeight
Selectionleverinthe272"setting.Lowerthemower
intothecuttingposition.
Toraisethefrontofthemower,firstloosentherear
nutoneachlinkandthenequallyturnthefrontnuts
rearward.
Tolowerthefrontofthemower,loosenthefrontnut
ofeachlinkandturntherearnutsforward.
Positionbladessothattheyareparalleltothetractor
frame(foreandaftline)beforemeasuringclearance.
Checkbladeheightsasclosetothefrontandrearedges
ofthemowerbladesaspossible.Besuretotighten
bothfrontandrearnutswhencheckingbladeheight.
Adjustthelevelinglinksuntilthedistancebetweenthe
bladetipsandthelevelsurfaceisthesameatboththe
frontandrearofthemower.Theforwardtipmaybe
slightlylowerthantherearwardtip.Neverpermitthe
rearwardtiptobelowerthantheforwardtip.{This
doublespowerconsumptioninmowing)!
5.MowerSidetoSideLeveling.SeeFigure6.
Mowersidetosidelevelingisadjustedatthefactory.
Shouldreadjustmentbecomenecessary,itmaybedone
bylooseningthetwocarriageboltsontherighthand
sidethatsecuresthegaugewheelcarriertothedeck.
Theholesmaybeslottedifadditionaladjustmentis
required. Afterobtaininga levelposition,retighten
thecarriagebolts.
Sidetosidelevelingshouldbedoneona levelsurface,
suchasyourgaragefloorwiththeheightselectionlever
inthe2^^" settingandthemowerloweredintothe
cuttingposition.Besurethemowerislevelforeand
aftbeforecheckingsidetosidelevel.
TWOCARRIAGEBOLTS
FIGURE6 ADJUSTMENTS
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MAINTENANCE
CAUTION: Disengageattachment
^^ drivelever,stopengineandremove
keysandsparkplugwire(s)before
^^^^H^^ makingadjustments.
1. MowerBladeBolts.SeeFigure7.
Beforeoperatingthemowerforthefirsttime,check
theboltsholdingtheblades.Theymustbetight.After
thefirst8 hoursofoperation,checkthemagain.When-
everthebladesareremoved,itisgoodpracticetoinstall
newlockwashersunderthebolts,andagaincheck
tightnessafterthenext8 hoursofoperation.
2. BentBlades.SeeFigure7.
Checkforbentbladesbeforemountingthemowerand
afterimpact.Bladetipsshouldbewithin% inchofthe
samehorizontalplane.Alignallsixbladetips,twoata
timeasshowninFigure7 todeterminethis.Mowing
withbentbladeswillcausemissedstripsanda poor
mowingjob.Bentbladesshouldbereplaced
immediately.
MOWERBLADEBOLTS
TIPSSHOULDBEWITHIN
%"OFSAMEHORIZONTAL
PLANE.
FIGURE7
3.MowerGaugeWheels.SeeFigure8.
Removethegaugewheelsaftereach10hoursofmow-
ingandlubricatethebushingsandaxleboltswith
chassisgrease.Asanalternatetogrease,thewheels
canbeoiledaftereachfourhoursofoperation.Make
suretheoilpenetratestotheinsideofthebushingsby
holdingthedeckatananglewhilelubricating.
4. Mowerdeckbeltreplacement.SeeFigure8.
Thedeckbeltisautomaticallytensionedbya spring
loadedidlerpulleyanddoesnotrequireadjustment.
Installa newbeltinthefollowingmanner:
a. Removethedeckbeltguard.
b.Relaxtheidlerpulleytensionbypivotingittowards
thefrontofthedeckwitha 9/16"boxwrench
placedonthehexnut.
c.Removetheoldbelt.
d. Placethenewbeltaroundthe3 spindlepulleysand
idler.
e.Rotatesystembyhandtocheckforfreeoperation
andidlertakeup.
f.Replacedeckbeltguard.
HEXNUT
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5.SharpeningBlades.SeeFigure9. 7.Cleaningthemowerdeck.
Withtheengineshutoffandafterthebladeshave
stoppedspinning,checkthemowerbladesperiodically
fornicksordullness.Damaged,dullorimproperly
sharpenedbladescancausea shattered,ratherthan,
cleancutandbrownareasofgrassmaydevelop.Refer
toFigure9 forthecorrectsharpeningangle.
CORRECTANGLEWRONGANGLETO
OFSHARPENEDSHARPENCUTTING
CUTTINGEDGEEDGE
FIGURE9
6.BalancingBlades.SeeFigure10.
Aftera bladeissharpened,checkitforbalanceby
insertinga dowelinthecenterholeandplacebetween
twoleveledgesasillustrated.A balancedbladewill
centeritselfsothecuttingedgesareparallelwiththe
leveledges.
FIGURE10
CAUTION: Unbalancedbladesare
A
ahazardandwillcausepremature
wearandfailureofbearingsand
spindles.Ifthebladescannotbe
balancedbyresharpening,replace
themwithnewones.
It
Withtheengineshutoffandafterthebladeshave
stoppedspinning,checkandcleanouttheinsideof
thedeckhousingperiodically.Removeanygrass
wrappingsbetweentheblademountingplatesand
spindlehousings.Grasswrappings,ifallowedtoaccum-
ulate, mayworktheirwayunderthebearingsand
damagetheseals.Excessivegrassaccumulationinthe
deckhousingwillwastehorsepowerandcauseplugging
andstreaking,aswellas,corrosion.
8.TractorandEngineMaintenance.SeeFigure11.
Completetractorandenginemaintenanceinstructions
areoutlinedinyourtractorOperator'sManual.When
mowing, giveparticularattentiontoareaswhichare
affectedbygrassaccumulation.
Checkandbrushofftheengineairintakescreenand
heatexchangerfinsdaily.Alsocheckandcleanthe
engineaircleanerelementdaily.Ifmowing,under
particularlydryordustyconditions,a precleaner
whichfitsovertheregularelementisavailablefrom
yourJ \e Dealer.Thisprecleanercanbewashed
outwithsoapandwaterasnecessaryandwillextend
thelifeofthedryelementfurnishedwiththetractor.
FIGURE11
9.TirePressure
Maintainthetiresatequalandrecommendedpressures.
RefertoyourtractorOperator'sManual.
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INSTALLATION
I.ASSEMBLY
1. Beforeassemblingthemower,layoutandcheckthe
individualcomponents.SeeFigure12.
TheJ-40Mowerisshippedwithonedrivebeltandone
setofliftlinkssinceitisintendedforuseonlow
clearance(200series)tractorsonly.
TheJ-44andJ-46Mowersareshippedwithtwodrive
beltsandtwosetsofliftlinkssincetheymaybe
mountedoneitherloworhighclearance{200,400or
600series)tractors.
2. Selecttheappropriatebeltusingapplicationcharton
page3.Thebeltpartnumberisstampedintothe
outercoveringofthebelt.Selectthetwoshortlift
linksifinstallationistobeona lowclearance(200or
600series)tractor.
Selectthetwolongliftlinksiftheinstallationistobe
ona Model444.
SelectonelongliftlinkandspeciallinkP/NC 19652
(suppliedwithtractor)iftheinstallationistobeona
Model446.
FIGURE12MODELJ-46ROTARYMOTOR- DISASSEMBLED
3.Assembletheliftlinkstothemountingbracketand
securewithcotterkeysasshowninFigure13.
ThespeciallinkP/NC 19652fortheModel446
(suppliedwithtractor)shouldbeinstalledontheright
handside.
Theslottedendofthelinkswillbeconnectedtothe
tractorlifearmswhenmounted.
NOTEDonotpreassemblethemountingbracket
tothemowerdeckasshowninFigure13.
Itiseasiertoinstallthemountingbracket
tothetractorfirstandthenattachthemower
decktoit.
12
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II. MOUNTING
1. Locatetractorona levelsurface.Checktiresforequal
andrecommendedpressuresasfoundinyourtractor
Operator'sManual.
2. Beforeattachingthemountingbracket,turnthe
adjustingcrankcounterclockwiseasfaraspossibleto
providemountingclearanceatthefrontaxle.Referto
Figure14.
ADJUSTINGCRANK
FIGURE14BELTADJUSTMENT
13
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3.Position the mountingbracketunderthefront ofthe
tractorandontotheanchorpinsasshown in Figure 15.
Raisethefront of thebracketandreleasethesnapfast
pins to lock in place.
NOTEModel644and646 - Themountingbracket
isattachedwith thetwo clevispins and
safetypinsconnected to eachfrontside of
theframe.
4. Lower the liftarmsfully.Positiontheliftlinksonthe
inside ofthe liftarms. Puta plainwasher on each
clevis pinand install inthe fronthole of theliftarm
from the inside.Secure the linkswiththesafetypins
attheoutside.Refer to Figure 15.
5.Raisetheliftarmsintothetransportposition.
SNAPFASTPIN
FIGURE 15 MOUNTINGTHEJ-46MOWERMOUNTINGBRACKET
6.Place the heightselectionlever inthe V/a"setting to
gainadditionalclearanceandslidethemowerunderthe
tractorfromtherightliandsideandalignthedeckwith
theattachingholes inthe mountingbracket.Lower
themountingbracket tothe mowerdeck.Refer to
Figure 16.
7.Install the Fore-Aftlevelinglinks tothe mounting
bracketasillustrated in Figure 16.
9.With the engineshut off,key removed, and cool to
thetouch,engage the attachmentdrivelever.Raise
thehoodandremovethesparkplugwire(s) for safety.
Insert the drivebelt in front ofthe idlerpulleys, be-
tween thefanand heatexchanger and onto the
attachmentdriveclutchpulley.Turn the adjusting
crankclockwiseuntil the belt canbe easilyplaced
around the idlerpulleys and onto the mowerdrive
pulley.
8.Connectthemountingbrackettothetabsonthemower
deckwiththeclevispinsandsafetypinsprovided.
NOTELiftingthemowerdeckupwardslightlywill
aid in aligningtheholesbetweenthemount-
ingbracketanddecktabs.
CAUTION: Shut off engine,allow
engine to coolandremovekeyand
^^^^^L sparkplugwire(s)beforereplacing
^^^^fljjjft mowerdrivebelt.
14
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r
10. Checktomakesurethebeltisproperlylocatedineach
pulley.Turntheadjustingcrankcounterclockwiseto
tensionthebeltuntiltheidlerspringcoilsopen1/8
inch(approximatelythethicknessoftwonickels.See
Figure5 and14.)Disengagetheattachmentdrivelever
andreconnectthesparkplugwire(s).
IMPORTANTBeforeoperatingthemower,reviewand
followtherecommendationsoutlined
intheadjustmentsandMaintenance-
sectionofthismanual.
TheJ I CaseCompanyreservesthe
righttomakeimprovementsin
designchangesinspecificationsat
anytimewithoutincurringany
obligationstoinstallthemonunits
previously sold.
Printed inU.S.A. 40i CMTHO
15
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