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NICALMANUAL
BERTIRED,
TANDARD,
ITH
KET.
ONSANDPARTSCATALOG
UARY1944
Publ
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ManualandParts
"SI",published
y,isfurnishedforthe
ofallconcerned.
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tW-145AEng.514
705780
706837
706848
706860
706868
706871
706873
706876
709562
709568
709581-582
709590
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tW-1088Eng.2159
tW-1088Eng.2163
tW-1088Eng.2461
o4714397Incl.
tW-1088Eng.2632
dup
tW-11-032Eng.(MSP)-8
dup
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S
CE
ANCES
VICEDATAfl
ONS
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ceInstructions
Tractor
stment99
dle105
ent26,87
y90
erInstalling90
bly87
8
the58
ingSystem17
61
ions20
actor63
8
,58
8,19
65
e69
39
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Tractor
Front91 108
g614
Magneto6179
ceMiddleRing87104
rFreeOperation4673
873
44
245
2
102
embly7492
mentof1226
mentof1125
391
5
paratorytoDriving5275
80
974
362
rting3262
2955
98
g4271
gScrew4171
g4372
of6883
ectingRodsandPistons,Detailsof.1842
sembly2449
ve,Details2550
chroscope5475
ng6078
5978
ingNut5877
Plate 5576
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ame
ine
ringPosition,
chroscope
uiredtoService
ontact
f
ng
ting
tailsof
ff
earOff
oving
acing
ReverseIdlerGear
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NSS.MyRule.
rneTractorwhichyouareoperatingwasde-
ecificjobforyourArmy.Theprimaryconsideration
ddependabilitywitha minimumofweight.
nyyears,builtareputationfor dependableand
ntheAgriculturalfieldandforHighwayandIndustry
esall thesefeatureswhichhavemadepossiblelong,
therwithlatestengineeringknowledgeanddesign.
htenoughin weighttobehandledeasilyby
able,valve-in-headCasebuiltengineassuresapower
hrough.Thetransmissionisthesametime-proven
aldriveforbestperformance.
chdayof operationbecausetheModel'SI'is
jobandeasierto operateonceitisin use.Routine
onhasbeensimplified.Thereareonly afewpoints
egun. Thepacklesswaterpumpwithsealedball
lcare.Batteryismountedoverthe clutchhousing
ssible.
someansmoreworkdone.Gaugesandcontrols
tobservationandoperation.Clutchandbrakepedals
eofthelatesttype,operatingindividuallyorlocked
entdamageto thetractor,thefollowingsafety
tall times:
athighspeed.Usebrakesfor turningonlyat
onwhentravelingonhillsidesor overroughground.
actorwhileit isinmotion.
duallywhenstartingthe tractorsothattheload will
Thisis particularlytruewhenthetractorisgoing up
tofabogor ditchorhitchedtoa heavyload.When
tions,theoperatormustbepreparedto disen-
yifthefront wheelsraiseofftheground.
ouldneverbeoperatedwithoutproperguards.
dtelescopingshieldstocovertherevolvingshaft
venmachinemustbesecurelymountedinplace.
mentismountedonthefrontof thetractor,whenit
theengine,this mustbedonethroughthefirst
tside ofthetractor.
nualcarefully.
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with HoodRemoved
okeEnd6.
d
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NSSpecifications
ONSANDSERVICEDATA
CTORS
.7 Imp.gal.,53liters
al.,3.5I mp.gal.,15.2liters
,1.12Imp.gal.,4.64liters
al9gal.,7.5Imp.gal.,34.1liters.
nch
-1
26lbs.(1550R.P.M.)
.M.
M.
nchwhenwarm
J7)No.18 Venturi.
11inchdiameter.
nforwardandreverse.Mountedondifferential
er.
h12.00-24tires)
?T>TUT
P.M.
R.P.M.
peed)541R.P.M.
Spline)1}4inch
Kinch
actor.
toronlywithoutadaptingequipment)
nch
%inch
wheel-56%inch
74inch
Kinch
h
bs.(tractoronly)(Completewithwater,oil
062lbs.(Tractorlesswater,oil andgasoline).
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orwithHoodRemoved
Cap11.
eControlRod14.
Wire
g
g
able
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NSPreparingNewTractor
TORFORUSE
stedandthoroughlyinspectedbeforebeingshipped
gly recommendedthattheoperatormakeacareful
einbeforeputtingthetractorin service.
rusingtheLubricationChartFig.8 asaguide.
enginecrankcasebyremovingtheoilplugsNo.13
de ofengine.Theoillevelshouldbe betweenthe
is notrunning.
ircleanercuptoseethat itisfilled tothelevel
e baffle.Fig.9.
ransmissionanddifferentialcaseandbesureit is
evelplugonthe reartransmissioncover.
ne,removethesparkplugs andpourasmall
chcylinder.Replacethesparkplugsandcrankthe
stodistributeoiloverthe cylinderwalls.Thisassures
stonsandcylindersimmediatelyaftertheengine
cessaryonlyfora newengine,oranenginethat has
monthormore).
velswiththeenginerunning.
dfromthefactorywithoutoilin thecrankcase.Beforea
quartsof agoodgradeofoil havingaviscosityof
put inthecrankcase.Inadditiontothis, forthe
t oflightoilto eachfivegallonsoffuel.Afterthe
unin, discontinuetheuseoflightoil inthefuel,but
nkcaseincoldweather.
eshouldneverbestartedtofacilitateunloadingor runeven
crankcaseisfilled totheproperlevelwitha good
ecoolingsystemisfilledto capacity.Thispractice
eengineandmustbe prohibited.
edtostandfora considerablelengthoftime,oil
ts,causingthemto sweatandrust.Theymayseize
beforethe engineobtainssufficientlubrication.This
weather.
gsystemis4 gallons.
helowerradiatorpipelocatedon theleftsideof
softwater.When thetractorisoperatedin
F.or0 Cent,orlower),anti-freezesolutionsmustbe
ctorisgravityflow.
14U.S.gallons.
underthefueltank andfilltankwithgaso-
w,add apintoflight oiltoeachfivegallonsof fuel.
operateongasolinehavingaminimumratingof65
mperformance,ahighgradeoffuelshouldbeused.
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.
erCap15.
ent inthefueltankcap iskeptopenatall times
fuel.
eltankwhennearan openflameorwhenthetractorengine
9 atbottomofthecarburetorandturn onthe
solinetorunthroughtoclean outthefuellineand
ethedraincock.
ONCABLES
he toolbox.Checksparkpluggaps.They
essary,adjustthe sparkplugpointsbybendingthe
empttobendthecenterelectrode.Alwaysusethe
heninstallingorremovingsparkplugs.Makecertain
sare inplacetoforma gas-tightseal.
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NSSurringEngine
ineis1-3-4-2.No.1sparkplug isnearthefront
ctthecablefromtheNo.1 outletofthemagnetodis-
houldbeattachedtoNo.2 cylinder,etc.
edtoassurerigid blockinginshipment.
or,eventounload,deflatetires
allowedtodropbelowtheserecommendations.
gularlyonceaweekwithan accuratelowpressure
e andscrewedtighttopreventmud,graveland
amagingthevalvecore,alsoto preventthelossofair.
lconnectionsareproperlymade.
batteryareproperlycoveredwithliquid.Ifnot,
rain water.Fig.6.
eachcellin thebattery.Thefullchargegravity
5at80 degreesF.Inservice,thegravityshouldbe be-
argegravity.Withnormal use,thegeneratorshould
e1.250.
gearshiftleverin theneutralposition.Fig.5.
eedlevalveNo.2 Fig.92turns counter-clockwise
ataboutmid-position.Pullingbackopensthe
ginetooperateat higherspeed.
nition,bypullingout switchhandle,crankthe
ndmakesurethat theimpulseisworkingfreely.
to^of itsfulltravel,whenstartinga colden-
up,push thechokeingradually.Nospecificpoint
thiswillvaryslightly.Do notchoketheenginetoo
"flood".Ifthe engineiswarm,itis besttotrystart-
eat all.Floodingisusuallydueto excessivechoking
turningoffignitionswitchwiththethrottlefully open.
hetractor Fig.73toprotecttheoperator.
starts,checkoilpressuregaugeNo.11Fig.5 to
essure.Ifitis not,stoptheengineandinspectthe oil
of thisfailure.
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attery
eryto StartingMotor
atterytoGround
ngVibration
atterytoTransmissionCase
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NS
epresstheclutchpedal andshiftintotheroad
nsforthedifferentspeedsare showninFig.7.When
upthe enginewiththefootacceleratorandengagethe
releasingthepressureonthe clutchpedal.Donot
ythusallowingthetractorto jerkintotheload.
ependsentirelyonthe loadandgroundconditions.
lstopwiththeteethoppositeeachother andthereby
ouldthisoccur,partlyengagetheclutchandallow
Theteeth willthenmeshreadily.Thiscondition
henthetractorisnew.
perhourforthis tractorequippedwith12.00-24
operatingat1550R.P.M. isasfollows:
tractorwithyourfoot restingontheclutchpedal.This
heclutchfacingsand throwoutbearings.
essingdownfirmlyonthe clutchpedalandmove
tralposition.Itisrecommendedthattheenginebe
ngagingtheclutchandthenapplyingthebrakesto
tractor.If thetractoristoremain standingfora
bletolockthefootbrake.
etelybypushingthethrottlelever forward,thus
,thenturnoffignition switch.
fueltankshut-offvalveifthe tractoristoremain
.
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R'SINSTRUCTIONS
hdifferentialor turningbrakesNo.14and15,
ndependentlytoassistinturning,lockedtogetheras
ckedasa parkingbrake.
y,operatorshouldnotattempttosteerthe tractor
yareto onlyassistinturning.It istherefore,neces-
,to turnthesteeringwheelin thedesireddirection
s applied.
edsor withloadsonhighways,thebrakepedals
.Thisisdone byengagingtheBrakePedalLockPin
brakepedalNo.15 Fig.5inthe holeintheleft-hand
andlocking.Whenstoppingaheavyrollingload
ottle theenginedownbeforeapplyingthebrakes.
onoftheenginewillslowdowntheload andreduce
kesandbrakelinings.
nglockNo.13 Fig.5,thebrakescanbe locked
ke.
tooperationby pushingthepowertake-offshif-
mentpanelwiththeclutchdisengaged.Thepower
rtedbymeansof themaintractorclutch.
A.S.A. E.standard1?4inchsplineand operates
enginespeedof 1550R.P.M.Thespeedof the
rectproportionto thespeedoftheengine,regardless
actorisoperated.
.
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NSLubrication
ingSystem
gsystembuiltintothis engineassurespositive
arts.Agear typeoilpumpcirculatesoilthrough
ntheengineblocktoallmain,connectingrodandcam-
erarmsandgovernor.Allotherpartsoperatein an
odbearings.Valveliftersareflood lubricated.
ndthrowout collararealsopressurelubricatedfrom
ontheoil pumpscreenshouldberemovedand
willmakecertainthattheoil deliveredtothebearings
throughthescreen.Finelyfinishedbearingsurfaces
nthe oilandremovethethreecapscrewsFig. 3.
enbe withdrawnasaunit.Usecareto protectthe
ofgasolinetoremoveall dirt,waterandother
horoughly.
heengine,inspecttheinteriorof thecrankcase
r dirtthatmayhavecollected.
htencapscrewssecurely.FillthecrankcaseFig.4
thefirsthour orsoofoperationobservecarefully
arepresent.
withanon-adjustablereliefvalve.Thisvalveis
dspressureonthe oilgaugewhentheoil andthebear-
.
ngine,the pressuremaygraduallydecreasedue
einthebearings.Thepressureshould neverbeallowed
normalenginespeedwithoutinvestigatingcauseand
ytoproperlysupplythe enginemayfailbecauseof
ncrankcaseandfreezingaround.thescreenwhen
e.
overFig.4 shouldberemovedandinspected
tanydirt thatmayhaveaccumulatedinthepipe.A
snecessarytoobtaintheproperbreathingaction.
kcaseis5 quarts(U.S.Measure).After128
ethecrankcasedrainplugandclutchhousingdrain
whentheengineis hotanddrainoutall oil.Fill
o.11Fig.4.
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eModel"SI"AirBorneTractor
LocatedonPlateonInstrumentPanel
eGrade
versal
pose
poseNo.2
56
rCaseModel'SI' AirBorneTractor
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NS
bricantstobeUsed
perature
ationandServiceInstructionsonIndividual
elubricantgun.
ilcupandremovebaffle.Cleanthoroughlyandre-
E.Under dustyconditions,cleanandrefillmore
stight.Seepages23and 47forfurtherinfor-
eandcleanthoroughly.
fill tolevelofupperlevel plug.Every128hours
seandclutchhousing,whenengineishot,then
eetable.Caution:Whenrunningengine,be
atesoilis circulating.
e,cleanandreplace.Seepage17 forfullinstructions.
tial
evelwithtractoron levelgroundandaddlubricant
g,drainimmediatelyafteroperation.
e,washingasolineand addOE.
ndrepackbearings.
singwhen completelydrainingcrankcase.
eclutchandbrakelinkage,throttleand governor
ation
utchreleasebearing,steeringgear,governor,power
rodballandsocket,enginevalverockerarms.
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STRUCTIONS
dbe maintainedtothelevelofthe topplug,nc
ediftheengineis operatedwiththelevelslightlybe-
ocircumstancesshoulditbeoperatediftheoil level
DATIONS
yofOil
perature.
ERENTIAL
ndbearingsinthe transmissionanddifferential
edinoil.Thecasei scompletelysealed,andtheonly
cantis throughcarelessfilling.Theoilusedis ofsuch
itmayremainsuspendedduetothe continuoussurg-
earsand chains.Thisgrittyoilwill causerapidwear
parts.
OMMENDATIONS
9gallonsU.S.Measure
y
missioncaseshouldbe drained,flushedandrefilled.
er
missioncasetopcovershould beremovedandin-
Rinseitout ingasoline,thendipin engineoil.
ON
repackedwithgreaseat thefactoryand,under
uirenoattentionforthe first256hoursofoperation.
beremoved,cleanedthoroughlyandrepackedwitha
Thisshould berepeatedevery256hoursthereafter.
sareprovidedwhereverautomaticlubrication
dgradeofsemi-fluidpressuregun lubricantshouldbe
warmweather.Incoldweathera lightergradeoflubri-
proper lubricationofthebearingsurfaces.Wipethe
oreusingthegreasegun.
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NScburtor
CE
dlubricatingthe tractoraspreviouslyindicated,
esitwillbenecessaryfortheoperatorto makeminor
irs.Alltheadjustmentsdiscussedinthe remainder
onsectioncanbemadebythe operatorwiththe
.It issuggestedthatotherservicingbe lefttofield
hetractorreturnedtoabase forcompleteoverhaul.
stractoris easilyadjustedandonceproperlyset,
nlythreeadjustmentsareprovided IdlingSpeed
in Jet.Allcarburetorsaresensitive,souse carein
andidlemixturecan bestbemadetogetherand
ginewarm.The throttleleverontheseat mounting
ayforwardbeforemakingthe adjustment.Theidling
houldbeadjustedsothatthe enginewillidlefast
.Thenturnthe idlingjetadjustingscrewNo.1
gineruns smoothly.
hisadjustmentisonefull turnfromtheidling
ethecorrectsettingisusuallybetweenYJ, and1'4turns
madewhentheengineis warmandworkingun-
he greatestinfluenceunderthoseconditions.Turn-
wardprovidesaleaner mixture,whileturningout-
xture.
the enginestartstomissor powerfallsoff.
operoperationis secured about]/&ofaturn isusual-
llassuremaximumfueleconomywithverynearly
ththeoriginal setting,makeanapproximate
mainjet valveinwarduntiltheneedlejust seats.
ethepointagainsttheseatas thismayruintheseat.
dtwofull turns.Thissettingissufficientlycloseso
rateduntil finaladjustmentismade.
hroughthe carburetorindicatesthemixtureis
evidentwhenthe engineisacceleratedbypulling
Anoverlyrichmixtureisindicatedbysluggish action
ppearanceofblacksmokeattheexhaust.Thefinal
aspossibleandstill havesatisfactoryengineoperation
assemblyandRepairofCarburetorisdiscussed
ctionsonpage39.
urbthe functioningofthecarburetoronthis
thefuel.
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ShowingDetailsofAirCleanerandCarburetor
w
t
s
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NSAirde.
nkshouldbeinspectedandcleanedatleast once
ek)underordinaryconditions.Shutoff thefuelsupply
ringclip andunscrewtheglasssedimentbowl.Clean
eringtothe filterdisksbyunscrewingthefilter ele-
angasoline.Cleanthebowlandreassemble.Incold
oricethatmaycollectin thebowl.
preventtroubledue tocloggingofthefilter.
allytroublesomebecauseitmaynotbecompletelyre-
ionallyopenthedrainvalveNo.3 Fig.9inthe bot-
sothat anywaterandforeignmaterialwilldrainout.
ingoftheoil-bathair cleanerisimperativewhen
onditions.Inextremelydustyconditions,morefre-
ry.
leanerFig.9,it isnecessarytoloosenthebail
totheaircleanerbodyand removethecup,in-
baffle(7) mustberemovedfromthecupin orderto
t accumulateinthecup.Cleanallforeignmatter
ebaffleclean.Replacethebaffleandfill thecupwith
engineoiltothelevelindicatedonthe insideofthe
ainthat thegasketissmoothwithinthelower flange
upandbaffleas aunit.Lockthemintoplaceby
ndinwarduntilit snapsintoplace.Seepage47.
ECTIONS
g.9,shouldbekept air-tight.Otherwise,
anerwillbedefeated.Besurehosebetweentheair
roperlyinstalledandhoseclamps(5) Fig.9kept
earwillresultifthere areleaksbetweentheaircleaner
emanifold.
istractorareofthe 14m.m.threadsize,AC
quivalent.Shanklengthshouldbe^iinch.Agap of
inedbetweentheelectrodes.Ifthegap betweenthe
to inpropersettingorburning,thespark mayjump
sultinginmisfiring.Therefore,iti sveryimportant
edproperly.
ssingtheprobablecauseisfailureof theignition
asyoucranktheengineslowly,noticethe compres-
lt.Sometimesavalvesticksopen,whichalwayscauses
compressionissatisfactory,replacethesparkplug
malivecylinder.If thecylinderthenfires,thetrouble
arkplug.
enced,examineallwiresleadingto theplugsand
condition.Whenremovingorinstallingsparkplugs,
nchfurnishedwiththetools,rather thanpliers,open
blewrench,topreventdamagetothe porcelain.A
essitatereplacementoftheplug.
areofmagneto,starter,generator,batteryand
enanceInstructionspage65.
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ump.ArrowsIndicateDirectionofFlowofWater
ley
gsystemis4 U.S.gallons.Animpellertypepump
ecrankshaftforcesthecoolingsolutionthroughthe
enginehead.Athermostat,openingat160F.auto-
.
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NS
onthefanhub. Fig.10.Totighten,turnthe
hedirectioninwhichthe bladesturn.Thetension
akeupanyloosenessorslackin thebelt.Havingthe
pid beltwear,excessiveloadonthebearingsanddoes
adjustedbeltcan easilybedepressedaninchwith-
hebelt,tightenhexagonnuts.
emadeby looseningthegeneratorandswinging
tensionisobtained.
beinstalledbylooseningtheadjustablepulley
ndslipping onthenewbelt.It isnecessarytoremove
provideclearancebetweenthegeneratorpulleyandthe
ningtheCoolingSystemis giveninthesec-
onsonpage58.
ssedinthe Operator'sInstructionsunderCold
e32.
dwaterintoahotenginein whichthewaterhasbeenal-
.Todoso mayresultincrackingthecylinder
isnecessarytopourwarmwaterinto acolden-
,add thewaterslowly.Toorapidpouringmay
ctorisaspringloaded,dry disk,singleplate,foot
e verylittleattentionexceptforoccasionaladjust-
ormalwearofthefacings.Whenslippageis noted,as
pwithoutpickingup theload,immediateadjustment
damageto clutchfacings.
ee
al
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chpedalmustbemaintainedandcan beadjusted
kplugwirestoavoidany possibilityoftheen-
gontheclutch.
ClutchPedalshownas1'
m
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NSClutchinJB,,ke.
,thefootpedal shouldhaveoneinchfreemovement
e rearaxlehousing.Fig.12.
9mustnot beincontactwithclutchfinger.This
ingtheleft-handclutchhandholeplate.
nnectionsoas toprovide}& inchclearancebetween
ngshownasl/%"in Fig.69.Thisisaccomplished
sattheclutchleverand unscrewingittogivethe
ure locknutbehindclevisisturneddownse-
ect,thefootpedalcanbe depressedaboutan
ngcontactsthefingers.Bydepressingpedal
adilybe felt.
hefingersgetcloser tothrowoutbearingandclear-
edup.Thelength ofthefootpedalconnection
oreclearanceisentirelyusedup.
assembledbeforeitwas putintothetractor.It is
rto theextentofy&inchwear allowanceonthe
chplate.Aftertheclutchplate hasworn},iof
ced.Whenthisamountofwearhastakenplace,
facingstoclutchplatehavecomeincontactwith
d thepressureplateonthe other.
ovingClutchAssemblyandInstallingClutch
risincludedinMaintenanceInstructions
keis tostopthefirst reductionshaftfromrevolv-
gagedfor shiftinggears.Correctadjustmentmakes
djusted,inspecttheclutchbrakeshoe Fig.73to
theclutchbrakesleevewhen theclutchisdisengaged.
dmakesurethat thebrakeshoedoesnotcontact
heproperclearancewhentheclutchisengagedis y&
bymeansof theadjustingscrewFig.73.Turningthe
sthe clearance.Aftertheproperadjustmentisse-
crewbytighteningthelocknut.
hdisk typebrakesmountedonthesidegears of
propercareandreasonableusage,theywill givevery
e,footbrakeswillrequireadjustmenttocompensate
rm onthebrakeactuatingleverstrikesstop3 Fig.
stthebrakes.Thisadjustmentmaybeeasilymade,
ebrake,byfollowingthesesteps:
.
akehousingarethreecapscrews(1), Fig.13.Loosen
ralturns.
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(2) clockwise,therebyscrewingadjustingnng
dforcingthe powerplateinward.Thisaction
ard,anddecreasesclearanceatthebrake
headjustingpinion (2)untilthebrakepedal
about1>"to 2".Thisshouldleaveadequate
ebrakewillnot dragwhenreleased.
tissecured,depressbrakepedaland lockit.Then
ws(1)to locktheinternalbrakepartsin place.
adjustingpinion(2)asthe adjustingringwith
preventedfromturningwhenthe capscrewsare
brakeon theoppositesideofthe tractor.The
alizedonbothsides,so thateachpedalwillbe depress-
brakeapplication.
havebeenmade,itmaybecomenecessarytore-
se,replaceentiremiddle brakeringcompletewith
dis notadvisable.Seepage105.
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NSRubberTire.
tractorsleavethefactory,all tiresareinflatedto
0pounds.Thisis donetopreventbouncingofthe
kalltireinflationsandsee thatthefrontwheels
eand therearwheels12pounds.If heavyequipment
ofthetractor,the airpressuremustalsobe increased
RESFORCASE'SI'AIRBORNETRACTOR
nds
ds
8pounds
nds
nds
2pounds
theywillbeusedfor drawbarwork,suchaspulling
.Ifequipmentsuchas loadersordiggersaremounted
t apply.
les:
essuresspecifiedinthe precedingtable.
valvestems.
si nthecasingpromptlytopreventdamagefrom
abric.
reartiresis12 lbs.,exceptwhenweightisadded.
bs. pressure(only2lbs.undernormal,but actually
emay bucklewhensubjectedtoheavydrawbarloads.
hecasing,requiringanexcessivereplacementexpense.
ressureswillnot materiallyincreasetraction,and
eencasingandrimonheavydrawbarloads,resulting
m.
nflationpressuresspecifiedintheprecedingtable.
naccurategaugeeveryotherweekunlessyoufind
dualoperatingconditionsthepressurewill bemain-
nflationpressuresdecreasewhenthetractoris idleas
g,sobesuretorecheckthepressuresafter thetractor
etime.
operatetractorswithunderinflatedtiresthanit is
torvehiclewithtire pressurestoolow.
importantfunctioninmaintainingproperin-
vetwomainpurposes:
gainstentranceofdirt, whichwillbeforcedinto
nnertubewhenthetire isinflatedthenexttime.
rpastthe valve.Thisleakageisaccentuatedby
whichmayaccumulateonthevalveseatbe-
evalvecap.
ngthevalvecapson allvalvestemsatall times
essuresorinflating).Thesecapssealthedirtout and
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NS
s cutsandbreaksshouldberepairedpromptly
riorationofthecordstructure,whichmayresultin
siverepairs.Smallcutsinthe sidewallortreadrubber,
dbewashedoutwithgasolineand filledwithtreadcut
ntmoistureand dirtworkingintothefabric.If the
enailorsimilarobject,a regularrubberplugmaybe
the timethetubeis repaired.
gsontherim,the tiresshouldbeinflatedto about
eating ofthetirebead.Thenthe pressureshouldbe
valuefornormaloperation.
ION
ppagewillbeexperiencedwhenusingrubber-tired
s.Whenthereis evidenceofslippagebythereartires,
rofthetractorshouldbe filledorpartlyfilled withdirt,
materialto getthenecessarytraction.
elfull,holdsapproximately6cubicfeet.Filled
ghtwillvaryfrom 540to810pounds,withearth 450
d450to720 pounds.Theaddedweightwillvarywith
ebox,andthisshould bekeptinmindin loadingthe
ransported,thedooronthe bottomoftheweight
ndthe loosematerialdumped.Besurethatthebottom
eforethebox isagainfilled.
ingWeightBox
calConnectiontoTailLight
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NS
tothe tractorbymeansoffourpinsFigs. 14and
cotterkeys.Beforeremovingtheweightbox,make
Fig.14is disconnectedatthebracketontheseat.
ofsleeveonthe bracket.
singthe procedure.
xAttachment
ghtBox4.
htWire
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ERATOR'SINSTRUCTIONS
RMALCONDITIONS
ionoftheCaseModel'SI' AirBorneTractor
nablynormaloperationinthetemperatezone.Opera-
tions,suchasextremecold(belowfreezing),indust
rtainprecautionsbetaken.
ON
edin coldweather(airtemperaturesbelowfreez-
ustreceivespecialcare,andthetractormust becare-
roilsand greases.
gradeofanti-freezeintheradiator.While
ezearetobe preferred,alcoholoralcohol-basesolu-
owever,topreventlossofalcoholby evaporation,
stnotbeallowedto riseabove160F.
gsystemandinspectradiator hosesandconnec-
eezeintheradiator inordertopreventloss ofsolution.
houldacompoundof(unknowncompositionbe
fulto thecoolingsystem.Nosolutionsofcalcium
ormagnesiumchlorideshouldbeused.Theelectrolytic
ydamagingtometalparts.Likewise,nosubstances
osene,honeyorsugarsolutions,sodiumsilicateor
xtrafirehazard,destructionofthe radiatorhosesand
eriorsurfacesofthe coolingsystemmayresultfrom
ls asrecommendedinlubricationchartFig.8.
eritisveryimportantto changeoilmoreoftenthanin
tionofwaterintheenginecrankcaseismuchgreater
antityof waterisallowedtocollect,itmayfreeze
tsorburnedout bearings.Toavoidthisdanger,loosen
y,afterthetractorhas stoodforacoupleofhours.If
kcaseitwilldrainoutwhen thedrainplugis backedout
dsareholding.Itis notnecessarytocompletelyre-
e oilinthe aircleanerremainsfluidsothat itcan
mtothefilterscreens.If theoilcongeals,itcanbe thin-
LYDUSTYCONDITIONS
nditionscareshouldbeusedtomakesure thatdust
eltankin fillingorbearingswhilelubricating.The
edregularly.
uretorpassesthroughanoil-bathaircleanerwhich
ematerialandkeepsit fromenteringtheengine.In
heaircleanermust beservicedregularly.Thismust
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NSStorageandShipment
ntervals,underbaddustconditions4hour intervals.
recontainedonpage23.In addition,thehosecon-
ertothe carburetormustbekepttightatall timesso
ntaminatedinpassingtothecarburetor.
ustsealedat allotherpointsbymeansof gaskets
hecrankshafthasaleatheroilsealat thetiminggear
ersin thetransmissionaresealedtopreventloss
Rearaxlesarelikewisecarefullysealed.
DYCONDITIONS
whichfit intoaretainer.Theretaineris heldto
chinescrewsandshouldbekepttightat alltimes.The
eakingout ofthebearingsorwaterfrom entering.The
ngthebearingsandalsokeepsout dustandmud.
missionretainlubricantand prevententranceof
GEORSHIPMENT
fromoneshifttoanother,overnightor periods
ig.5.
g.5.
tankNo.2Fig.4.
Weekup toaMonthUndertheseconditions:
ig.5.
g.5.
eltank,fuellines andcarburetorbyopeningdrain
rburetor.RemovefuelstrainerbowlNo.3 Fig.4.
perationis doneinfreezingweatherunlessthe
dwithanti-freeze.
regiventractoranddate preparedforstorage.
Month
slonger,the tractormustreceiveadditionalcare
dothis,stop theengineandremovethetwo
ig.3in theintakemanifold.Attachcupsor
canbemadewitha y&inchelbowanda short
starttheengine,setthethrottle athalfspeed;
nerorpipe approximately]4.cupfulory^pintof
whenexcessivebluesmokeappearsattheex-
or thispurposeiscommerciallyknownas
No.10engineoilwillbesatisfactory).This
othe engineputsaprotectiveoilfilm onpistons,
sandotherengineparts, protectingthemfrom
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RATOR'SINSTRUCTIONS
rust.Afterthe operationiscompleted,thepipe
vedandthepipe plugsputbackintothe intake
tensecurely.
, andcarburetorbyopeningdrainvalveNo.3
emovefuelstrainerbowlNo.3Fig.4.
teryandmakeprovisiontocharge everymonthor
alstokeepthe gravityabove1.240.
if operationisdoneinfreezingweather,unlessthe
dwithanti-freezesolution.
mpletelyfollowinglubricationchartpage 18.
tractorindryplace andplacingblocksunderaxles
andpreventtheirtouchingtheground.Protect
puttingback intoservice,besureair pressure
sforfronttires and12poundsforrear tires.
re giventractoranddatepreparedforstorage.
rsoronflat cars:
utlinedon page33.
andcarburetorbyopeningdrainvalveNo.3 Fig.
elstrainerbowlNo. 3Fig.4.
shipmentismadeinfreezingweather,unlessthe
dwithanti-freezesolution.
removingfromtractor orcoveringsecurely.
oundspressure topreventbouncingandchafingin
ntoservice,reducepressuresto28 poundsfor
forreartires.
tractor tocarfloorto prevent-shiftinganddamage
r equippedwithHoughLoaderwhenpacked
relypackedin acrateofthe followingdimensions:
0
as,oil andwaterusedinthis tractoris126pounds
f 4208pounds.
ntooperationthefollowingparts,whicharealso
Rods
Shaft
be surethatfronttirehas 28poundsofair
12poundsofair pressure.
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NSTolerancesandClearances
orequippedwithLaPlantChoateHydraulic
ExportShipmentissecurelypackedinacrate ofthe
s,oilandwater usedinthistractoris 126pounds
f 3408pounds.
tooperationthe followingparts,whicharealso
stalled:
Shaft
besurethat fronttirehas28 poundsofairpres-
oundsofair pressure.
ingonthedestination.Ifgoing intocombat,
dandfilledwith oil,fuelandcoolingsolution.If
maybe drainedasdesired.
dwithaHoughLoaderweighsapproximately
thgas,oil andwaterreadyforoperation.Withgas,
eighsapproximately4082pounds.
LaPlantChoateHydrauliccontrolsweighs3408
s,oil andwater,readyforoperation;withgas,oil
ghsapproximately3282pounds.
temmust bepreparedfortheminimumairtem-
nteredeitherinflight orontheground.Anti-freeze
reezing temperaturesmightbeencountered.Com-
onpage32 underColdWeatherOperation.
elylashedin theplanetopreventshiftingin flight.
ERATOR
tiesdonotterminatewithmerelydrivingthe
eltankfilled.It ishisresponsibilitytosee thatthe
mechanicalandoperatingconditionaswell asto
rance.Serviceandmaintenancesectionsmustdepend
onthegeneralperformanceofthetractor.It is,there-
vantagetobecomethoroughlyfamiliarwiththefunc-
ofthe tractor.Weurgethestudyofthe information
ntainedinthis book.
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NDCLEARANCES
n.+or/^in.
aiseorlower1 in.
henengagedyiin.
enfingersandthrowout
eoffirstringingroove.003-.0045in.
ncesecondandthird
in.
encompressedto3.5in..010-.020in.
requiredtoclosejoint11 to14lbs.
dplay
nningclearance
tallength
s,torquetotighten
eaboveblock
etotighten
eats
pening
learance
ce
ghten
ve
oclosej oint
sedto3.5i n.
s,checkwith
shinginrod
ton
ablerunout
lve
uide
compressed
ed)
compressed
n)
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NS
rrespectiveheadingsaresomeofthe
difficulty.Ifyouarehaving anydifficulty
welltocheckyourenginewiththis list.
13
plugs.......13,69
.65
........11,21
.......12
..23
....21,46
y.........56
adjusted.......55
.......56
65
23
........23
3
ng.........56
.......56
6
......56
ed........55
58
...58
25
....46
artiallyclosed......46
......65
.....50
8
......18,19
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TOR'SINSTRUCTIONS
56
st 23,47
ngs60
. 61,62
5
24
EXHAUST
pentoofar.. .)Black21
Smoke21
/Smoke18
18
PE
65
n.57
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ONS
ONSFORTHECASEMODEL
esmuchoftheservicerequiredontheenginein this
tremovingtheenginefromthe tractor.Manyas-
oved,servicedquickly,putbackinplaceandthe trac-
minimumofdelay.
dontheCaseModel'SI' Tractorisextremely
roperlyadjusted,it willrequireattentionveryrarely.
eprovided.Fig.9.
eterminestheminimumspeedof theengine
ndernoload.
hemixturesuppliedwhenidling.
marilythe mixturesuppliedatthehigherspeeds
power,fueleconomyandsmoothnessofopera-
ntsshouldbemadecarefully.Oncesettingsaremade,
dexceptundernewtemperatureconditionsorwhen
is reason,thegradeoffuelshouldbe maintainedas
r
isassembledonlyatmainbases.While itisa
tisa precisionmechanism.Disassemblyshouldnever
thecarburetormustbetakenapart,replaceitwith
sendthe carburetortakenoffthetractortoa main
th161 seriescarburetorswesuggestthefollow-
screw(6Figure19) andspring.
obowlassemblyscrewswithascrewdriver. (There
andlockwashers.)
ightly andloosenthegasketfromthebowlas-
gasketclearofthebowlassembly,being'careful
t.
gure19).
singa screwdrivertopushtheaxle fromtheslotted
fingers toremoveittherest oftheway.
blyandthefuelvalve needle.
ytobowlgasket.
eatandgasketusing ZenithC161-85ServiceTool.
ing asmallscrewdriver(&"blade).
throttleplateREADNOTEAfollowingsection
enproceedtoremovethethrottleplate screws,
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. C.
ression^^
none
ssembled
wardthe
rrelthe
ve.0I0to
007to
op
ondand
.0il
Select
e.
ed
ca-
am
ha-
nor
arancebetween
.010',hot.
e
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ne
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ankshaft,ConnectingRodsandPistons
Barrel13.
n14.
OrderingReplacementParts.
ap
g
erpinusing asmallpunchanda hammer.
aftpackingretainersandpackingsusinga screw
ersto liftouttheretainers.
dentificationdiscwhichisrivetedto thebowlcover(see
8),thethrottlestoppin,the floathingebracket,or
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ONS
enith
4Figure19) usingasmallscrewdriver(jV blade).
gejet(3)andgasketusing ZenithC161-25Service
tmentassemblyandgasketusingaX" open-end
dgasketusing C161-1ServiceTool(orasuitable
ertaperpin usingsuitablepunchandlighthammer.
er.
ewsandlockwashersto
teandshaft.
ftpoleplug (CR137-19)usingasuitablepunchand
entchannelbushing(10,Fig. 20),airshutterstoppin, air
n,ordripplug.
ottlebody castingingasolineorothersolventand
elwithcompressedairtomakesurethat allchan-
Partsto beReplaced"forlistofparts whichwe
enoverhaulingthistypeofcarburetor.(See
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or
tA
sFollows
positionand
screwsandlockwashers.Besureairshuttervalve
owninFigure19andthat theairshutterplateis
ighteningthescrewssecurely.
assemblyasfollows:
wide-openposition.
shaftandagainstthestop pininthedirection
T63-2taperpin.)
kesuretheair shutteropensandclosesfully.
holeplug(CR137-19)usingalight hammer.
newgasketusingZenithServiceToolC161-1.
entandnewgasketusingaX"open-endwrench.
ejet(3)andnew gasketusingZenithServiceTool
nga smallscrewdriver(nogasketrequired).
packinginnewpackingretainerring and
rring(withpackingin) inrighthandshaft boss
tinposition and
e noteA).Thethrottleplateshouldbe properly
gthescrewsandlockwasherssecurely.
blyon thethrottleshaft.
ateisstraight upanddowninthe barrel(wideopen)the
stthe stoppin,then
verassemblyandshaftusing aNo.45drill and
ng asmallscrewdriver(nogasketrequired).
tandnewgasketusingZenith ServiceToolC161-85.
ytobowlgasketin position.
einpositionfollowedby thefloatassemblyand
thehandleendofa screwdrivertostriketheend of
slottedendof thebracket.Thefloatshould
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TIONS
o obtaincorrectfuellevel,asshownin Figure21.
l^i" plusorminus%".(Movethe gasketto
measurement.)
'positioninthe throttlebody.
asa locatingbossthatfitsinto agrooveinthethrottle body.
yinposition onthethrottlebodybeingcareful to
sandlockwashers.Besureto tightenthescrews
crew(6). andspring.
ustment,setthe idlingadjustment(6)andthemainjet
open andadjustthethrottlestop screwtohold
n.
series carburetorwerecommendthefollowing
fromZenithCarburetorDivision,696HartAve.,
tWrench.
Wrench.
ServiceTools
gparts shouldbereplacedwhenoverhaulingthis
kets,C181-66gasketkitcontainsthem;C81-17Fuel
(sizeNo.35); MainJetC52-6No.30;C55-6No.16
t C66-46No.50;C52-2No.28Well Vent;C85-28
oatAxle;C23-258ThrottleShaft;AirShutterShaft
eShaftHolePlug;C131-4-2PackingCap(2required);
required);CT62-1Cotter;CT63-2TaperPin;
uired);T41-5PlateScrewLockwasher(4required).
1-88.
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NSTRUCTIONS
epriminghole pluginrelationto thethrottleplate
uniformidlingandpart throttleoperation.Tomain-
weenthepriminghole plugandthethrottleplate,our
ottleshaftandplatein thethrottlebodybeforedrilling
oleplug,locatingtheholein adefiniterelationtothe
It isreadilyapparentfromtheabovethat throttle
annotbeinterchangedindiscriminately.Whenit
placethethrottleshaftorthrottleplate,we suggestthe
pscrewtopermit completeclosingofthethrottle
losedpositionandmarktheinsideof thethrottle
ate withasteelscriber.
saguide,replacethethrottle shaftorplate.Ifnew
blevariationfromoldone,select anothernew
eryclosetothescribed linewheninstalled.
ereplaced,werecommendobtainingacomplete
ludingshaft,plate,primingholeplug,etc.,built
happearsonthe identificationdisconthebowl
midentificationdiscrivetedtothecarburetorbowl
blyoutlinenumbertowhichthecarburetorwasorigi-
specialpartssuchas throttlebodies,throttlelever
etc.,besureto specifyoutlinenumberofthecarbure-
ectingpartsrequired.
THROTTLESHAFTBEARINGSisanopera-
emptedunlesstheshopisproperlyequippedfor such
hrottlebodyassemblywitha newonebuiltto
ontheidentificationdisc.
andidlemixturecan bestbemadetogetherand
ginewarm.The throttleleverontheseat mounting
ayforwardbeforemakingthe adjustment.Theidling
beadjusted sothattheenginewill idlefastenoughto
theidling jetadjustingscrewFig.9in oroutuntil
hisadjustmentisonefull turnfromtheidling
ethecorrectsettingisusuallybetween$4 and\%turns
madewhentheengineis warmandworkingun-
he greatestinfluenceunderthoseconditions.Turning
videsa leanermixture,whileturningoutwardpro-
the enginestartstomissor powerfallsoff.
operoperationis securedaboutyiofaturnis usual-
llassuremaximumfueleconomywithverynearly
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ONS
ththeoriginal setting,makeanapproximate
mainjet valveinwarduntiltheneedlejust seats.
ethepointagainsttheseatas thismayruintheseat.
dtwofull turns.Thissettingissufficientlycloseso
rateduntil finaladjustmentismade.
hroughthe carburetorindicatesthemixtureis
evidentwhenthe engineisacceleratedbypulling
Anoverlyrichmixtureisindicatedbysluggish action
ppearanceofblacksmokeattheexhaust.Thefinal
aspossibleandstill havesatisfactoryengineoperation
neris topreventdirtandabrasivematerialfrom
erservicingcannotbetoostronglyurgedbecausedirt
inewiththe
rmful.They
onpistonsand
es,wearon
ycausethe
orholdopen
rn.
ingofthe
rativewhen
onditions.
ons,more
ssary.
cleaner
oosenthebail
theaircleaner
ncludingthe
emovedfrom
hecup.Never
up.Clean
ecupand
acethebaffle
free-flowing,
elindicated
Makecer-
oothwithin
y.Then re-
unit.Lock
gbaildown-
apsintoplace.
AirCleaner
leaner
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STRUCTIONS
blymoreoften,dependingentirelyondust con-
shouldberemovedfromthe engineandcleaned.Un-
dthemetallicwoolandretainerbe removedfromthe
gnparticlesoffthelowerside ofmetallicwool.Then
apailofcleankerosene.
theair cleanercapandcleantheinsideof the
aircleaner.Aswab,madeofpieceofflexiblewire with
d, isaneffectivetoolforthis purpose.Theairintake
of excessivedirt,asablockedintakewillreducethe
carburetor.Tooricha mixturewillresult,inturn,
er.
replacethemetallicwoolin thebodyofthe
uldbe replaced.Ifthewoolisnot properlyinstalled
unitwillnotoperate,properly.
ECTIONS
shouldbekeptair-tight.Otherwise,thepurpose
efeated.Besurehosebetweentheair cleanerand
stalledandhoseclampskepttight.Excessiveengine
eleaksbetweentheaircleanerand thecarburetoror
han efficientflyballtypegovernordrivendirect-
factorytogivea no-loadenginespeedof1680R.
speedof1550R.P.M. Todeterminetheengine
meter(speedindicator)andtakethe speedsfromthe
orcranking.No.20 Fig.4.Theno-loadspeedof
175R.P.M.EngineR.P. M.canbecalculatedby
shaftR.P.M.by 1.44.
theenginespeedmust bechangedtobringit to
adjustmentcanbemadebylengtheningorshorterning
ottleleveron theseatmountingbracketwiththe
t handsideoftheengine.No.4 Fig.4.Shortening
heenginespeed,whilelengtheningdecreasesthespeed.
nthasbeenmade,besure thatthelocknutsarefas-
adjustlength ofthrottlerodatthe end
ysdoitat thepointnearthebattery boxNo.
sanddisconnectgroundingwireNo.12 Fig.4at
reabout^iinchfrom engineblock.Turnmotor
No.1 cylinder
1Fig.24frommagnetobracketNo.1 Fig.24.
nchcapscrewsholdingmagnetobrackettocylinder
mblyout.
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ONS
netoAssembly
eitherend ofpinsforgovernorweights,whichare
eout.Careshouldbetakennot todamage
g.25 cannowberemovedfromtheendof shaft
osefitandshould slidefreely.Removesnap
dpull offbearing,whichisnota tightfit.
arNo.4 Fig.25fromshaft,takeoffsnapr ingthat
an bepulledwithanysuitablepuller available.
romgearendofshaftNo. 3Fig.25,andpull shaft
obracketNo.1 Fig.25.
o.3Fig.25has excessiveplayinthemagnetobracket
sshouldbereplaced.Drivebushingsoutand
Shaftshouldturn freelywhenreplaced.
hegovernorsleeveshouldbereplacedifit shows
ylightpress fit.
payingparticularattentiontogovernorweights.
singcarein forcinggovernorpinsinplaceand
sare properlysecured.
camshaftgearandgovernorgeararemarked
ut cannotbeseenunlessradiatorandtiming gear
ecialCareshouldbetakenwhengovernorassemblyis
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randMagnetoDrive
ng
nger
eforGovernor
norSpring
overnorArm
enOrderingReplacementParts.
placedthecompleteassemblyisagainbuiltup.
tilthe drivingslotinthe magnetocouplingNo.
yondthehorizontalpositionofgovernorhousing.
place andputinthe threeHcapscrewsand
positionand holdsparkplugwireleadingfrom
butor abouty&inchfromaluminumframeof
impulsecouplingina clockwisedirectionwith
meuntilasparkjumps betweenthecableandthe
wrenchfirmlysotheimpulsewillnot move
rips andthesparkoccurs.
ulseofmagnetowillbe25 degreesbeyondthehori-
etoFig.35,and shouldmatchthemagnetodriv-
ng.Attachthemagnetotothemagnetobracket
dtighten securely.
ckto seethatimpulsetripsfreely,so magnetowill
wlywith thehandcrankuntilthe impulsecoupling
^ inchholeNo.1Fig.34 intheflywheelrim
dertheinspectionholeinthe right-handsideof
secouplingreleasesatsomeother point,itwill
twoscrewsholdingthe magnetotothegovernor
gnetoslightlyuntilthe impulsereleasesatthe
opof themagnetotowardtheengineretards
romthe engineadvancesthespark.When
unningspark isautomaticallysetatthecorrect
ivethe bestpoweroverthewholerangeof en-
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ONS
earsat FrontofEngine
tGearsCorrectly
aftGearsCor-
erhasCoiled
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ONSoaPump
ventypeoperatingthroughspiralbevelgears
latesoilthroughpassagesin theengineblocktoall
camshaftbearingsaswellasvalverockerarmsand
floodlubricated.Allotherenginepartsoperatein
ectingrodbearings.Thesamepumpprovidespres-
chshaftpilot bearingandtheclutchthrow-outcollar.
requiredisto removeandcleanthoroughlythe
hoursof operation.Thisprocedureisdescribedon
ereliefvalveislocatedinthe sideofthepump
-passestheoili ncaseswhereoilpassagesareplugged
thin.Theseconditionswillbe indicatedontheoil
eisset toregister25to 30poundsontheoil pressure
andbearingsareingoodcondition.Thepressure will
heengineis used,butitshouldnever beallowedto
ormal enginespeedwithoutinvestigatingthecause
ytoproperlylubricatetheengine willfailifthese
orrectasoutlinedonpage 17.
ncrankcaseandfreezingaroundthescreenwhen
correctasoutlinedonpage32.
velpage11.
ychecklubricationchartforrecommendedgrade
usuallyoccurringafterlongservice.Correctionin-
blingtheOilPump
benotedthattheoil pumpismountedonthe
ck.To removeoilpump,theoilpumpscreenmust
edonpage17.Theoil panmustbetakenoffthe en-
1. Theoilpumpcanthenbe removedasaunitby
p,referto Fig.27anddriveoutpin (2)fromoil
ear(1).
3)andslideout drivegear(11)togetherwith
ovedrivengear (10).
ide outspring(6)andrelief plunger(5).
ywornpartsintheoil pump,theyshouldbere-
sembledbyreversingtheprocedureindicatedun-
toseethat thereliefnut(7) issecurelytightened.No
ntheoilpump cover(13)andthebodyof (4)sothe
mountedandthemachinescrewsecurelytightened.
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carefullyinstalledtoprotectdrivegearand camshaft
mbledandbeforeitisinstalledin theengine,the
freely.Ifpressuredoes notshowontheoil pressure
started,stopthe engineatonceandchecktomakesure
the crankcaseandtheoilpumpproperlyassembled.
earance
hRod2. JamNut3..010InchFeeler Gauge
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ONS
erHeadbyLiftingStraightUp
MS
escanbe tracedtotheoperationandadjustment
,enginemissing,engineoverheating,lackofpower
ustpipeare afewofthesedifficulties.
ANCE
alvecovermust beremovedandallsparkplugs
stvalveclearance.
erarmsandendsofvalvestemsshouldbekept
aranceshouldbe.010inchwhenthevalveis fully
m.
valveclearance,therimoftheflywheelis marked
ylinder.Removetheplugfrominspectionholeon
Fig.34 andcranktheengineuntilmark''D" onfly-
ththehole.Thisis topdeadcenterofNo.1 andNo.
nstrokecanbe detectedbynotingtheactionof
compressionbothvalvesandpushrodsarestationary.
mentofbothvalvesforthiscylindercanbe made.
dturn adjustingscrewsuntil.010inchclearanceis
ssecurelyafteradjustmentismade.Recheckafter
ineis1-3-4-2.
wlyuntila distinct"click"isheardfromthe
g.Whentheclicksounds,stopthecrankimmediately
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STRUCTIONS
No.3cylinder.Proceedinthesamemannerfor
TS
ackof powerislackofcompressioninone or
.withpoorcompressionisinefficientandshouldnot
stedfor compressionleaks.Beforemakingthe
un untilitis warmeduptoworkingtemperatureand
properlyoiled. Donottryto testcompressionona
eading.Whenawarmengineishandcranked,there
ceaseachpistonis oncompressionstroke.Ifcom-
ablybecauseofcompressionleakspastthevalves,orif
tedforseveralmonths,there maybecompressionleaks
will requirereplacementofringsorpistons.
removethevalvecoverand squirtkeroseneon
rarmsto removeanygummyoilaccumulation;then
esthiscarewillcausevalvesto seattight.
armedifthey hearaslightamountofcompression
ats.Valvesseldomremainabsolutelytightinservice
ticeablebecausetheexhaustpipe isclosetotheman
enginehasgoodpower,it isbestto leavethe
oughtoreconditionvalveseatswhentheyareknown
power.
SEATS
elackspowerduetoleakingpastthe valves,
edorpitted, andwhenthisoccurs,meregrindingwill
estoretheconditionsthatare necessaryforsatisfactory
reconditionedasfollows:
olingsystemandremovesparkplugs.
d.
r.
arburetorasaunitby looseningaircleanerhoseand
sattachingmanifoldtocylinderhead.
ldingbearingbracketsthathold rockerarmas-
mshaftandassemblycanbe removed.
eabove4mentionednuts,awireshouldbe placedlength-
d sametogether.Thiswillfacilitatereassemblyof
ecylinderheadstuds. Disconnectthecapscrews
t holdwaterflange.
elifted off.Fig.29.
blefromOwatonnaToolCo.,Owatonna,Minn.,
iesthe removalofvalves.
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ONS
sUsingOwatonnaToolCompany'sValveLifterNo.
lswilldoas well.
tsarehard alloysteelinsertsandcannotberecon-
semodernvalveinsertgrinding equipmentfor
Theintakeseatsmayberefacedwithhandtools.
.
inderheadonenginesee thatthegasketisnot dam-
dgeandthatthe waterpassagesinthegasket
assagesin thecylinderblock.Attimeofmajor
ce,itis desirabletoinstallanew cylinderhead
rheadstudnutsevenly.Beginat centerstuds
routwards.Tightento60 ft.-lb.Afterengine
andiswarmedup,retightenstuds andresetvalve
ussedinAdjustingValveClearancepage55.
eckedwhileheadisremovedandshould meet
x.
heightof1%inches (valveopen)61to69lbs.
heightofl^ inches(valveclosed)25to28lbs.
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ANCEINSTRUCTIONS
edbymeansofan impellertypepumpthrough
andenginehead.Thepumpis drivenbya'Vbelt
lationisautomaticallycontrolledbyathermostat
ureof160 F.
gsystemis4 U.S.gallons.
dwaterintoahotenginein whichthewaterhasbeenal-
.Todoso mayresultincrackingthecylinder
isnecessarytopourwarmwaterinto acold
ed,addthe waterslowly.Toorapidpouring
em
ularlyin thespringafterdrainingtheanti-freeze,
begivena treatmentwithwashingsodasolutiontore-
mentthatis accumulated.Theeasiestwayistodrain
2gallonsoffreshwater.Then bringtoaboil an
addall thecommonwashingsodathatwilldissolve.
to thecoolingsystem.Runtheengineasusual for
horoughly,andrefill withcleanwater.
commendedtopreservetheinteriorsurfaceof
stight.Removeanyweedsordirt fromthecore
verheating.
onthefanhub. Fig.10.Totighten,turnthe
hedirectioninwhichthe bladesturn.Thetension
akeupanyloosenessorslackin thebelt.Havingthe
pid beltwear,excessiveloadonthebearingsanddoes
adjustedbeltcan easilybedepressedaninchwith-
hebelt,tightenhexagonnuts.
emadebylooseningthegeneratorand swinging
e thatV-beltdoesnotpulldownto thebottomofthe
beinstalledbylooseningtheadjustablepulley
ndslipping onthenewbelt.It maybenecessaryto
derto provideclearancebetweenthegeneratorpulley
Operation
coldweather,useagoodgradeof anti-freezeinthe
rsimilaranti-freezeareto bepreferred,alcoholor
besatisfactory.However,topreventlossofalcohol
temperaturemustnotbeallowedtorise above160 F.
rhosesandconnectionsbeforeputtinganti-freeze
reventlossof solution.
houldacompoundofunknowncompositionbe
fulto thecoolingsystem.Nosolutionsofcalcium
ormagnesiumchlorideshouldbeused.Theelectrolytic
ydamagingtometalparts.Likewise,nosubstances
osene,honeyorsugarsolutions,sodiumsilicateor
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ONS
xtrafirehazard,destructionofthe radiatorhosesand
eriorsurfacesofthe coolingsystemmayresultfrom
p
No.10 Fig.31bytakingoutfour capscrewsthat
Fig.31tohub No.9Fig.31on waterpumpshaft.
ooseningthegeneratorandswingingittowardthe
eand2wireclips.
ewswhichattachthewaterpump tothewatercon-
hefrontoftheengine.Removethewaterpump
10.
Pump
1Fig.31 onwaterpumphousingbytakingout six
UsecaresothatgasketNo.2 Fig.31isnot damag-
d Fan
lf
alf
enOrderingReplacementParts.
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RodsMAINTENANCEINSTRUCTIONS
ig.31 byusingsuitablepuller.Donot driveoff
impeller.
Fig.31onthefan bladeendofbearinganddrive
sembly.Thisshouldbedriven awayfromthe
an endofpump.
eenleaking,indicatedbywaterdrippingfromthe
ybethat thewaterpumpsealis worn.Inthat
ouldbereplaced.
ngsNo.6Fig.31are worn,acompletenewwater
houldbeinstalledbypressinginto placeandrein-
5Fig.31.
ent
atedbyInspectionarereplaced,the waterpump
einstalledontheengine.The fanbeltshouldbead-
e.25-
ordevelopsseriousleaks,itmustbe removed
gwiresto avoidanypossibilityoftheenginestart-
gsystembyremovinghexagoncapat bottompipe
eradiator.
d.
perradiatorhose.
erradiatorhose.
oldradiatoron radiatorbracket.
ersectionsofradiatorshroud.
tor,placelowersectionofradiatorshroudinposi-
t,putradiator intoshroudandinstallbolts mentioned
and bracket.Fromthispointreverseaboveprocedure.
stractorare accuratelymachinedtothefollow-
8^inches
2.375inches
nchesminus.003inches
e.0015to.0035inches
1inches
vablefromtopofblock
essureindicatesthatbearings areloose.
aps,notetheirpositionsandkeepthemseparated
eassembling..Numberedsideofcapsand rodsare
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ONSputon..ndRing,
gsonthecrankendare precisiontype,heavysteel-
hellsareinterchangeableandquicklyreplaced.They
enttheir rotatingonthecrankshaft.
bestraight,freeof twistandparalleltothe pis-
assembledwithtwoheat-treatedcapscrewswhich
with4rings,allabovethe pistonpin,including3
eventilatedoilring.
eyIron
.005inch
piston4
srequiredperpiston3
er piston1
240-.1235inch
860inch
hencompressedto3.5inches.010-.020inch
pressedto3.5inches.007-.017inch
ompressionring.003-.0045inch
ndandthirdcompressionrings.002-.0035inch
g.0015-.003inch
ointon compressionrings11to14lbs.
ointon oilring8to 11lbs.
AN
rviceconnectingrodormainbearingsorremove
ns,itisnecessaryto removetheengineoilpan.The
omplete.
oilby removingoildrainplugNo.15 Fig.4.
enNo.9Fig.3by removingthreecapscrews.Use
tgasket.
E. boltswithlockwashersandnutsthat attach
gefront end.Thegasketisonepieceusecare
ewsfrombottomofoilpan.
oved.
ocedureoutlined.
nnectingRods
removedtheconnectingrodbearingcapscanbe
dremovedFig.29,thepistonandconnectingrodcan
ghthecylinderbarrel.
e careinfittingnewonesto grooves.Compres-
ed withdotupwardortowardthetop ofthepiston.
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ONS
onslistedabove.Wheninstallingringsonpistons,be
hering grooveonpiston.Dipthepiston inoilbefore
eringgapsaround thepiston.
typeretainedinthe pistonsoneachendbysnap
esinthepiston.
hes
92minus.0003 inch
chsmaller thanpistonhole.
chsmaller thanbushinginrod.
goutthe snapringsandpushingoutpin.
edwithreplaceablewet-typecylinderbarrels.
removedFig.29 andtheconnectingrodsand
ullingthesleeve.
oCylinder
ng.Thisisa
aToolCo.Tools
oas well.
tiallyPullec
o .003InchHigher
WhenCylinder
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ONSCylinderBirreU
barrel isillustratedinFig.32 and33.Inthis
ghtheOwatonnaToolCompany,Owatonna,Minn,
oolsetswill doaswell.
d therubberringremoved,thelowergroovein
ecleaned.Theshouldersonthe newbarrelandin
ecleaned.
tha newoneandfitit intothelowergrooveof
asearoundtherubberring beforeitisput inplace
sidethelowerend ofbarrel,beforeputtingitin place.
otewhenthe endenterstherubbergasket.Push
thatthetopshoulderseatsin thecorresponding
nceisencounteredinreplacingthe barrel,ablock
ofthebarreland ahammerwillserve.Thefinalposi-
.003inch higherthanthetopsurfacesofthe block,
ut onandtightened.
sareselectfits inmanufacture.Therefore,both
e sametime.
edandinstalledas indicatedbefore.
gasketwithanewone.Replacethecylinderhead
nuts.Theseshouldbe tightenedevenlyandfirmly.
wnup first,workingfromthecenteroutward.Tighten
stem.
ockerarmassemblyand settheclearanceto.010
warmedup,the headstudnutsshouldbetightened
ceagainadjusted.
carburetorandconnectuptheaircleaner.
tions,installgasolinelines,controls,etc.,and
emptingtostartengine.
vehadnewcylinderbarrelsandpistonassembliesinstalled
onsiderationthatis givenanewtractor.Pistons
achinedandhonedtoa veryfinefinishandshould
hefirstfiftyhours, runathalfloador lessbe-
erblockor crankshaftistobereplacedinthe
removedaccordingtotheinstructionsoutlinedhere.
bedonpage60.Thenproceedasfollows:
ventdamaging.
kshaftpulley.
pull fandrivepulleyoffthecrankshaft.Donot
ley.
dfanassemblyasa unitbytaking'outthree
s,whichsecurethelowerwaterpumpbodyto
underthe tractor.
ecrankcaseandfromtheclutchhousingatthe
oncase.
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NSTRUCTIONS
eleft-handside oftheoilpan bytakingout3cap
pump.Pages53and61.
sforsplittingthetractor,as shownonpage87.
arburetoratgovernorlever.
carburetorassemblyasaunit,byremovingnuts and
dsinthecylinderhead.
drear endsofcrankcase.(Usetackleandchainif
gtheradiator brackettothecylinderblockand
xleassembly.
alongtheleft sideofthetractor.Caution:These
hto supporttheengine.
xIS18-^"splittingpinsmentionedonpage89.
eonits leftside.
emovedasrecommendedonpage63, anditbe-
vethecrankshaft,proceedasfollows:
omthecrankshaftbytakingoffthejam nutsand
heelbolts.
coverfromthecylinderblock.Becarefulnot to
ealinthe cover.(Setsmallcamshaftthrustplun-
oidmisplacement.)No.6Fig.26.
romthe crankshaft.
grodandpistonassembliesthroughthebottomof
bearingcaps.
.
nkshaft,cleanallpartsthoroughly.
eelywheninsertedinplace.
moothlyin theirgrooves.Theringgapsshouldnot
d.
nnectingrodsand capsshouldfaceawayfromthe
e.
makecertainthatthethree gearsatthefrontof
asshownin Fig.26.Thetoothonthe crankshaft
kmustbe between.thetwoteethhavingpunch
ar,whenthetoothon thecamshaftgearhaving
tweenthetwoteethbearingpunchmarksonthe
matchedthiswayvalveand magnetodrive
minggearcover,becarefulnot todamagetheoilseal.
erationswheninstallingthecrankshaft.
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ONS
istractorconsistsofa high-tensionmagnetofor
,electricgenerator,batteryandelectricheadandtail
locatedontherightsideof theengineisa
ontainedunitwhichshouldnotbetakenapartin the
ntheparagraphsunder FieldServicing.Manymag-
heyaretamperedwithby inexperiencedoperators,un-
orat placeswhereproperservicetoolsarenotavail-
TO
rviceoperationsinvolvingthetimingof theen-
entiremagnetounit.
owill seldomrequiretimingunlessithas beenre-
servicing.Themagnetohasbeenproperlytimed and
theposition ofthecrankshaftinrelationtothe oc-
notchangeappreciablyinuse.
eto
ntheengine overslowlywiththehandcrankun-
eases.Atthis pointthe%inchhole intheflywheel
leinthecenterof theinspectionholeintheright hand
dTimingMarkson Flywheel
elforignitiontiming
outtoshowFlywheel
ctionHole,IndicatesTopDeadCenteronNo.1 or4Piston
tionHole,IndicatesPointofExhaustValveClosing
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ONS
Thishole islocatedafractionofan inchfromthe
mand canreadilybeseen,or,if preferred,feltwith
asesat someotherpoint,itwillbe necessaryto
nthe mountingflangeofthemagnetoandrotatethe
mpulsereleasesat thedesiredpoint.Movingthetop
engineretardsthe spark;movingitawayfromthe
k.
ethesparkfromthatestablishedabove,especiallyifthe
ked.Thereisdangerofkickbackdueto the
etopdeadcenterposition ofthecrankshaft.
omtheEngine
resfromthemagnetotosparkplugs.Disconnect
utthetwo capscrewsattachingtheflangeofthe
rive.Themagnetocanthenbe liftedoff.
ledon thetractor,itmustberetimed.Follow
Positionfor InstallingonEngine
netoGroundWire3.MagnetoImpulse
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ONS
resand Nos.2,3and4 sparkplugsfromhead.
inderremainsinplaceFig.35.
isina neutralposition.
etiming inspectionholeontherightside ofthe
ston comesupstronglyagainstcompression.
g.
owly.Watchthroughthetiming inspectionhole
mmediatelywhena%inchholeinthe flywheel
nin thecenteroftheinspectionhole.Thisis
ngthe magneto.
an uprightposition,asshowninFig.36. Connect
stotheNumber1 terminalofthemagnetocap.
nd istheupper-righthandterminal.Holdthe
wireabout^inchfrom theframeofthemagneto
th thewrenchoneclickatatime,Fig. 36,un-
thewireandtheframe.Usecareto holdthe
ysoimpulsewillnotmovebeyondthe point
koccurs.Thepositionatwhichthespark occurs
esettingofthemagnetoforfiringposition ofNo.
ettingsof theengineormagnetoasestablished
oontheengine.Install thecapscrewsholding
gin thisposition.
gPositionof Magneto
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edtoServiceCase4JMAMagnetoListedon Page69
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ONSM.(net.smceTJ,
wireandinstallthe sparkplugwires.Connectthe
n thedistributorcapwiththeNo.1 sparkplug,
2sparkplug,etc.
umeconomyismadebyrotatingthe magnetoto
thesparkasdescribedunder"CheckingTiming
TO
tousedonthis tractorisequippedwithsealed
gnatedbushingswhichreqi irenolubricationexcept
.
NTS
rpointssometimesrequireadjustingFig.47.This
donpage73 underServicingatBase.
BASE
yH.G.Makelim,1583HowardSt.,SanFrancisco,
yH.G. Makelim,1583HowardSt.,SanFrancisco,
eEisemannMagnetoCo.,Brooklyn,N.Y.or
as builtbytheC. W.LeinenMfg.Co.,Racine,
acapacityoverthetableof11 inches.
heldinthe ramofthearborpress bythepressure
tinthe shanksofthetools.Theinstallationof this
dingtothe sketchFig.38.
%inchholeinthe ramforthisball.The hole
butmusthaveaflangeto keeptheballfrombeing
olebythespring.
renecessarytoproperlyservicethe CaseJMA
ngpaste.
ufacturedbytheUniversalLubricatingCo.,Cleve-
.
uller.
wdrivers.
pluggap gauges.
polepieces.
orequivalent.
r.
lbearingson shaft.
ressbearingon toshaft.
ulsecouplingunit.
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D
MethodofAdaptingRamofArborPressto
s
rush.
rtingstand.
ressshaftout ofbearing.
DISASSEMBLINGMAGNETO
ps.
bracketorinabenchvise whereitcanbeturned
romthedistributorcapterminalsshouldbe attach-
kgapswhicharesetat ^inchsparkjumpgaps.
Set
ithThree-
InchJumps
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ONS
Nuts
Cap
ngor
nd inthesamedirectionasit revolvesontheen-
ientsparktojump the}'&inchgapat all4termi-
newhetherornot theimpulselatchesand
gneto.Thelatterischeckedbyfeelingonly,and
omhimselftoknowhowacorrectlyoperatingim-
whentrippedbyhand,continuewithtestsheaded
ap".IfitsparksO.K., referto"SparkCutting
6.
p
andthetwospecialnuts holdingthedistributor
capfrommagneto.Becarefulnotto pulldistribu-
spullinggearsoutof meshatthesametime.The
inthedistributorcap isassembledslightlyback
henthedistributorcapisr emoved,itisnecessary
slightlyclockwisetomovegroundingspringfrom
isk.
eelgearon therotorshaftbeproperlymeshedwith
rshaft.Whenthegearsarein anyway.incor-
oronthedistributordiskis awayfromthebrushes
spark occurs.Thiswouldcausethemagneto
adlyburnthedistributordisk face
geardirectlyunder onetoothmustmeshbetween
stributorgear.Fig. 43.Thebevelonthe
asebakelite)distributorgear mustbeontheside
distributordisk.If thebevelontheteethis on
ributordisk, thegearison theshaftwrongand
ymeshed,removethedistributordiskforfurther
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ngorPro-Fig.44. RunningMagnetoonSynchro-
GearscopetoTest Spark
o
usethesparkisi ncorrectlyjumpingagapinthe
sedby
yleadtoo shortorburnedoffand notmakingcon-
nthedistributorcap.Thedistancefromthe
heendofthespring shouldbe1%inches.
indistributor cap.
distributordisk.
rs.Seeparagraph"CheckingGearDrive"page71.
distributorshaftbackwards.Seeparagraph"Check-
cope
disk.Fig.43.
e synchroscope.Fig.44.
ontheframeorbearingplate ofthemagnetoso
thespringon thesecondaryleadwirefromthe
speedandsparkshouldjumpfromspring toground-
etoisdead,referto"BreakerArmandContact
sweak(onlyjumpingfrom\\&inch to]/?,inch.)
e fieldofthechargingcoil.Fig.45.
ntheframe.Fig.45.
on thesynchroscopeasindicatedin"Running
ove.
gnetosparkisO.K.
diskwitha newone.Fig.43.
backintoplace.Fig.42.
edin "Testwith3-PointSparkGaps"page70.
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ONSBreakerAnn.ndPoint,
etin
Armfor
sparagraphsshowsthemagnetotobedead,
capwitha newone.Fig.42.
edin paragraph"Testwith3-PointSparkGaps"
Points
erarm tobesurethat itisfree andoperateseasily.
andmakecertaintheyareclean.Fig.46.
mopensthe breakerarmbetween.015inchand
tpointopeninggauge.Fig.47.
free,
m.Fig.48.
ughly.
ebreakerarm.
ct
rArm
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ctPoints
gneto
oCondenser
s.
ueor blacksurface,itmustberemoved.
whetstoneandNOTAFILE.Usea very
tas nearlysquareonthestoneas possible.
deflat.It isessentialtoleavea very
nt.Fig.49.
be suretheyarecleanandfree ofoil.
degreasingfluid.
ad,runit atthesamespeedas itrunsonthe tractor
oints.Innormalrunningthere shouldbesome
ntactpoints.Fig.50.
econtactpoints,thereis agroundinthe primary
horted,thus groundingit.
dwirefromthe condenserleavingitconnectedto
ing screw.Fig.50.Ifexcessivearcingatthe
ndicatesthatthecondenserwasat fault.This
excessivemissingatthe sparkgapsorperhaps
oto jumpyiinchgap.
hnewone.
e.
sthewireleadingfromthe coiltothebreakerarm
hroughthe contactpointsbacktothebearingplate
wireto thecoil.Ifit isgroundedorshortcir-
ntactpoints,itwillbenecessarytochecktosee ifthe
leadwireorthewire istouchingthebearingplateor
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ONS
arting
ad,removethecoil.
o.5Fig.37,slip thehooksonthepuller jaws
coil.Fig.51.
er thepullerjawsagainstthemagnetoframe.
aceandbyturning withawrenchpullthecoil
positionastheoneremovedwith connecting
plate.
ecoilwiththosein theframeanddrivedown
hCompositionMalletNo.4 Fig.37.
aceUsing
on
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earfrom
PlatePoints
agnetoframesupportingstandon thetableof
okefordrivingcoilonpole piecesNo.9
borpress. Pressthecoilfirmlybackinto
stas outlinedin"TheCondenser"page74.
peed
whenturnedbyhand,"Testwith3-PointSpark
atfullspeedon thesynchroscope.Ifthesparkcuts
testhatthebreakerarmis sluggishonthefulcrumpin.
anberemediedbycleaningasin "BreakerArmand
K. whenturnedbyhand,"Testwith3-Point
still sparksO.K.whenrunat fullspeed,"Spark
.
etomustthenbecheckedonthesynchroscope.
dtrip thenumberofdegreesatwhichthe arrow
s.Thisislocatedbackoftheimpulse.Fig.55.
mingshouldonlybe testedwhilethemagnetois
veryslowlyon thesynchroscope.
o,itisfoundthat thecamiswornso thatinorder
etothecontactpointswouldopen toofar,itis
ver)the cam,thuscreatingthesameconditionas
elgearontherotor shaft.Fig.56.Pryoffthe
camandreinstallthe steelgear.Atthispoint
ght amountwhenthesparkoccursattheright
rk maybechangedbyadjustingthecontact
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uplingFig.60.CheckingImpulseCoupling
gneto
ortingstandNo.17,impulselugwrenchNo.16,
allin Fig.37asoutlinedin "ImpulseCoupling"page77.
uttwoscrewsandtwonuts andremovedistributor
vetheDistributorCap"page71. Fig.42.
overup.
ssemblyforwardoutof thebearing.Fig.43.
offsteel gearwithtwoscrewdrivers.Fig.56.
rewandpulloffbreakerbar.Fig.48.
akeoffbearingplate.Fig.61..
ememberthatthemomentthis isdone,the
tmustbechargedup againafterinsertingrotorinthe
vedand replaced.
ethegearandball bearingpullerNo.3Fig.37 as
bearing driverNo.18Fig.37in theramofthe
dpressthe shaftoutofthebearing.
cethetoolforassemblingbearingsonthe shafton
ss.Placethesocketforassemblingballbearings
ess.Placetheball bearingsontheshaftandpress
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nser
tPoint
ceitin frameasinFig.52 startinginterlacing
.Pressto placeasshowninFig.53.For com-
eCoil"page75.
kecertainbothscrewsaretightonlockwashers.
rotorshaftas outlinedin"ReplacingBearings"
me.Besurebothrotorandframeare clean.
hand;bearingsshouldnotbetight.
ce.Makesuregroundingwireis fastenedunder
dthe breakerbarspringsupportisassembledon
1.
t
ockingplateheldby twoscrews.Fig.66.
ce.Itshould require11to15 ouncesonrubbing
ts.
makingsure theWoodruffkeywhichholdsit
aft followingthecam.
eshaftmakingsure theWoodruffkeywhich
acewiththe reddotisawayfromthe magnet.
tobesureit isnotbroken.Besureprimarywire
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CTIONSA.embling
e tightonthecondenserterminal;thenput top
ghtheframe,placethe framebetweenthe
hargingcoilpoleswith thekeywayonthedriving
ndthat thekeywayisontheNorthPole side
ame.Placearrowtonumberwhichwillgivethe
tractor25.Thenscrew downtight.Fig.55.
eshell.Makesure thatthespringis securely
helloftheimpulse.Fig.60.
wayonrotorshaftand assembleontherotor
o pushkeyoutofkeywayinshaft.This can
erimpulsecouplingisinplace.
sherandnutonshaft.Besure togetkeyonspacer
Tightennutsecurely.
scope
scopeandtestasoutlined in"TimingofImpulse"
sitionwhereimpulsetrips byturningmagneto
isalwaysa laginthetime betweenwherethe
whenthesparkoccurswhenthemagnetois in
nts
dcorrectlythere shouldbe.015inchto .020inch
hentherubbingblockis onhighpointofcam.
lse"page76Fig.47.
hwhereit rubsthebrushesinthe distributorcap.
mbly
g caretomatchmarkedgearteeth.Toothover
ldbeplacedbetweenthetwobeveledteeth onthe
ldbeonsideof gearnexttodistributordisk.
"page71Fig.43.
pgasketis notbroken.
free.
notworndownbelowbrass retainer.Ifitis to
dbrush.Assemblenewone inplaceanddrive
olfor centerbrushNo.15Fig.37 andcom-
7 asusedinFig. 67.
butordiskFig.43 anddistributorcapFig.42,check
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ark
agneto
minal
oundout
e
ew,
p.Bend
.67
ring
d.
shIntoPlace
ngandstartingsystemthatneedlubricationare
motor.Afewdrops ofoilshouldbe putintheoilers
ofoperation.Theoiler openingsintheendsof both
losedwithsmallsheet metalcovers,whichshouldbe
eaningthe surroundingsurfacestopreventdirtgetting
)Twolubricationfittingsareprovidedon thegener-
one onthestarter.Donot over-oilthestarter.Three
cient.
inpositionbymeansofa heavysetscrewand
sscrewmustbetightto preventrockingofthe
g.