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Toro 74024 Service Manual

Toro 74024
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PTOSwitchTest(continued)
g349741
Figure85
3.Usingadigitalmulti-metersettotheOHMorContinuitysetting,verifythe
following:
Pin2and4shouldhavecontinuity(closed)
Pin6and8shouldhavecontinuity(closed)
Pin2and1shouldNOThavecontinuity(open)
Pin6and5shouldNOThavecontinuity(open)
4.WiththeswitchintheOFFposition(buttonpushedIN):
Pin2and1shouldhavecontinuity(closed)
Pin6and5shouldhavecontinuity(closed)
ElectricPTOClutchReplacement
ThePTOclutchelectronicallycontrolstheengagementanddisengagement
ofthePTOpulley(deckbelt).
ThePTOclutchiscomposedofthreemajorcomponents:
Field
ClutchPlate
FrictionPlate
Theclutchplatealwaysturnswiththeengine(crankshaft).Theeldisacoilof
wireonanironcorewhichbecomesanelectromagnetwhenpowerisapplied.
Thefrictionplateistheonlypiecethatmovesverticallyonthecrankshaft.Itis
normallyspringloadedsothatitisnotincontactwiththeclutchplateandis
pressedagainstthebrakematerialoppositetheclutchplate.Whenpoweris
applied,thefrictionplateispulledtowardtheclutchplateandthetworotateas
one.Whentheclutchplateandthefrictionplaterotateasdifferentspeedsit
isknownasclutchslipping.
ElectricPTOClutchRemoval
1.ParkthemachineonalevelsurfaceanddisengagethePTO.Stopthe
engine,waitforallmovingpartstostopandremovethekey.Engagethe
parkingbrake.
2.Disconnectthebatterybyremovingthenegativecablerst,thenthepositive
cablefromthebattery.
4000SeriesZMASTER®ServiceManual
Page8–9
Electrical:ServiceandRepairs
3442-427RevA

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Toro 74024 Specifications

General IconGeneral
BrandToro
Model74024
CategoryLawn Mower
LanguageEnglish

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