Toro 74901 - Cooling System Maintenance; Cleaning the Engine Screen and Engine Oil Cooler; Cleaning the Engine Cooling Fins and Shrouds

•Ifthegapislessthan0.010inch,thenreinstall
theshimandreferencetheTroubleshooting
section.
•Ifthegapissufcient,proceedtothesafety
checkinstep
F.
F.Performthefollowingsafetycheck:
a.Sitontheseatandstarttheengine.
b.MakesurethebladesDoNotengagewiththe
PTOswitch“off”andtheclutchdisengaged.
Iftheclutchdoesnotdisengage,reinstallthe
shimandreferencetheTroubleshooting
section.
c.EngageanddisengagethePTOswitch
tenconsecutivetimestoensuretheclutch
isfunctioningproperly.Iftheclutch
doesnotengageproperly,referencethe
Troubleshootingsection.
CoolingSystem
Maintenance
CleaningtheEngineScreen
andEngineOilCooler
ServiceInterval:Beforeeachuseordaily
Removeanybuild-upofgrass,dirtorotherdebrisfrom
theoilcooler(Figure71).
G008804
Figure71
Beforeeachuseremoveanybuild-upofgrass,dirtor
otherdebrisfromtheenginescreen.Thiswillhelp
insureadequatecoolingandcorrectenginespeedand
willreducethepossibilityofoverheatingandmechanical
damagetotheengine(
Figure72).
CleaningtheEngineCooling
FinsandShrouds
ServiceInterval:Every100hours/Yearly(whichever
comesrst)
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removetheairintakescreen,recoilstarterandfan
housing(Figure72).
4.Cleanthedebrisandgrassfromtheengineparts.
5.Installairintakescreen,recoilstarterandfanhousing
(
Figure72).
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