Toro 74143 - Adjusting the Electric Clutch; Cooling System Maintenance; Cleaning the Engine Screen; Cleaning the Engine Cooling Fins and Shrouds

AdjustingtheElectricClutch
ServiceInterval:Every500hours—Checktheelectric
clutch.
Theclutchisadjustabletoensureproperengagementand
properbraking.
1.Inserta0.38to0.53mm(0.015–0.02inch)feelergauge
throughoneinspectionslotinthesideoftheassembly.
Note:Makesureitisbetweenthearmatureandthe
rotor-frictionsurfaces.
Note:Thegapneedstobeatleast0.38mm(0.015
inch),andnotmorethan0.53mm(0.02inch).
2.Ifadjustmentisneeded,thensetat0.38mm(0.015
inch)foreachofthethreeadjustmentslotpositions.
3.Tightenthelocknutsuntilthereisaslightbindingon
thefeelergauge,butitcanbemovedeasilywithinthe
airgap(Figure54).
4.Repeatthisfortheremainingslots.
5.Checkeachslotagainandmakeslightadjustmentsuntil
thefeelergaugebetweentherotorandarmaturewith
veryslightcontactbetweenthem.
Figure54
1.Adjustingnut3.Feelergauge
2.Slot
CoolingSystem
Maintenance
CleaningtheEngineScreen
ServiceInterval:Beforeeachuseordaily
Beforeeachuseremoveanybuild-upofgrass,dirtor
otherdebrisfromtheenginescreen.Thiswillhelpinsure
adequatecoolingandcorrectenginespeedandwillreduce
thepossibilityofoverheatingandmechanicaldamagetothe
engine(Figure55).
CleaningtheEngineCooling
FinsandShrouds
ServiceInterval:Every100hours/Yearly(whichevercomes
rst)
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Removetheairintakescreen,recoilstarterandfan
housing(Figure55).
4.Cleanthedebrisandgrassfromtheengineparts.
5.Installairintakescreen,recoilstarterandfanhousing
(Figure55).
Figure55
1.Engineguard4.Fanhousing
2.Engineairintakescreen
5.Screw
3.Bolt
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