Toro 74939 - Cooling System Maintenance; Cleaning the Engine Screen and Engine Oil Cooler; Cleaning the Engine Cooling Fins and Shrouds

Figure71
1.Feelergauge
Figure72
1.Feelergauge
•Ifthegapislessthan0.010inch,theninstall
theshimandreferencetheTroubleshooting
(page63)section.
•Ifthegapissufcient,proceedtothesafety
checkinstepF.
F.Performthefollowingsafetycheck:
i.Sitontheseatandstarttheengine.
ii.MakesurethatthebladesDonotengage
withthePTOswitchintheoffposition
andtheclutchdisengaged.
Iftheclutchdoesnotdisengage,installthe
shimandreferencetheTroubleshooting
section.
iii.EngageanddisengagethePTOswitch
10consecutivetimestoensuretheclutch
isfunctioningproperly.Iftheclutch
doesnotengageproperly,referencethe
Troubleshootingsection.
CoolingSystem
Maintenance
CleaningtheEngineScreen
andEngineOilCooler
ServiceInterval:Beforeeachuseordaily
Removeanybuildupofgrass,dirtorotherdebrisfromthe
oilcooler(Figure73).
G008804
Figure73
Beforeeachuseremoveanybuildupofgrass,dirtor
otherdebrisfromtheenginescreen.Thiswillhelpensure
adequatecoolingandcorrectenginespeedandwillreduce
thepossibilityofoverheatingandmechanicaldamagetothe
engine(Figure74).
CleaningtheEngineCooling
FinsandShrouds
ServiceInterval:Every100hours/Yearly(whichevercomes
rst)
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Removetheairintakescreen,recoilstarterandfan
housing(Figure74).
4.Cleanthedebrisandgrassfromtheengineparts.
5.Installairintakescreen,recoilstarterandfanhousing
(
Figure74).
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