Toro 74549 - Clutch and Cooling System; Electric Clutch Adjustment; Cooling System Maintenance

2.Removeonebushing,thenpullthespannerbushing
androllerbearingoutofthewheelhub(Figure61).
3.Removetheotherbushingfromthewheelhub
andcleananygreaseanddirtfromthewheelhub
(Figure61).
4.Inspecttherollerbearing,bushings,spannerbushing
andinsideofthewheelhubforwear.Replaceany
defectiveorwornparts(Figure61).
5.Toassemble,placeonebushingintothewheelhub.
Greasetherollerbearingandspannerbushingandslide
themintothewheelhub.Placethesecondbushing
intothewheelhub(Figure61).
6.Installthecasterwheelintothecasterforkandsecure
withthewheelboltandlocknut.Tightenthelocknut
untilthespannerbushingbottomsagainsttheinsideof
thecasterforks(
Figure61).
7.Greasethettingonthecasterwheel.
AdjustingtheElectricClutch
ServiceInterval:Every100hours—Checktheelectric
clutch.
Theclutchisadjustabletoensureproperengagementand
properbraking.
1.Inserta0.015–0.021inch(0.381-0.533mm)feeler
gaugethroughoneinspectionslotinthesideofthe
assembly.Makesureitisbetweenthearmatureand
therotorfrictionsurfaces.
Thegapneedstobeatleast.015inches(0.381mm)
andnotmorethan.021inches(0.533mm).
2.Ifadjustmentisneeded,usea.015inch(0.381mm)
feelergaugetoseteachofthethreeadjustmentslot
positions.Tightenthelocknutsuntilthereisslight
bindingonthefeelergaugebutitcanbemovedeasily
withintheairgap(
Figure62).
3.Repeatthisfortheremainingslots.
4.Checkeachslotagainandmakeslightadjustmentsuntil
thefeelergaugebetweentherotorandarmaturewith
veryslightcontactbetweenthem.
Figure62
1.Adjustingnut3.Feelergauge
2.Slot
CoolingSystem
Maintenance
CleaningtheAirIntakeScreen
ServiceInterval:Beforeeachuseordaily
Beforeeachuseremoveanybuild-upofgrass,dirtorother
debrisfromthecylinderandcylinderheadcoolingns,air
intakescreenonywheelend,andcarburetor-governor
leversandlinkage.Thiswillhelpinsureadequatecooling
andcorrectenginespeedandwillreducethepossibilityof
overheatingandmechanicaldamagetotheengine.
CleaningtheCoolingSystem
ServiceInterval:Every100hours—Checkandcleanengine
coolingnsandshrouds.
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Removetheairintakescreenandfanhousing
(Figure63).
4.Cleanthedebrisandgrassfromtheengineparts.
5.Installairintakescreen,recoilstarterandfanhousing
(Figure63).
2
g015409
1
Figure63
1.Guardandengineair
intakescreen
2.Fanhousing
CleaningtheHydraulicOil
Cooler(52and60inchMower
ModelsOnly)
ServiceInterval:Beforeeachuseordaily
Beforeeachuseremoveanybuild-upofgrass,dirtorother
debrisfromthehydraulicoilcoolerandfan.Thiswillhelp
insureadequatecoolingandcorrectenginespeedandwill
reducethepossibilityofoverheatingandmechanicaldamage
totheengine.
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