Toro 30605 - Replacing the Blade-Drive Belt

Figure70
1.Belt4.Beltguide
2.Eyebolt5.Flangenut
3.Extensionspring
6.Stopbolt
ReplacingtheBlade-DriveBelt
ServiceInterval:Every800hours
Theblade-drivebelt,tensionedbythespring-loadedidler
pulley,isverydurable.However,aftermanyhoursofuse,
thebeltwillshowsignsofwear.Signsofawornbeltare:
squealingwhenthebeltisrotating,bladesslippingwhen
cuttinggrass,frayededges,burnmarks,andcracks.Replace
thebeltifanyoftheseconditionsareevident.
1.Lowerthemowerdecktotheshopoor,removethe
beltcoversfromthetopofthemowerdeck,andset
thecoversaside.
2.Loosentheeyeboltallowingtheremovalofthe
extensionspring(Figure70).
3.Loosentheangenutsecuringthestopbolttothe
mountingtabandmovetheidlerpulleyawayfromthe
belttoreleasethebelttension(Figure70).
Note:Loosenthenutenoughtoallowtheidlerarm
topassthestopbolt.
Note:Ifthestopboltiseverremovedfromthe
mountingtab,makesurethatitisinstalledagaininthe
holethatalignsthestop-boltheadwiththeidlerarm.
4.Removetheboltssecuringthehydraulicmotortothe
mowerdeck(Figure71).
Figure71
1.Hydraulicmotor2.Mountingbolts
5.Liftthemotoroffthemowerdeckandlayitontop
ofthemowerdeck.
6.Removetheoldbeltfromaroundthespindlepulleys
andidlerpulley.
7.Routethenewbeltaroundthespindlepulleysand
idler-pulleyassembly.
8.Positionthehydraulicmotoronthemowerdeckafter
routingthebeltaroundthepulleys.Mountthemotor
tothemowerdeckwiththeboltspreviouslyremoved.
Note:Ensurethatthebeltispositionedonthespring
sideofthebeltguide(Figure70).
9.Connecttheextensionspring(Figure70)totheeye
boltandtensionthebeltasfollows:
•Whenproperlytensioned,theinsidemeasurement
oftheextensionspring(hooktohook)should
beapproximately8.3to9.5cm(3-1/4to3-3/4
inches).
•Whenyouattainthecorrectspringtension,
adjustthestopbolt(carriagebolt)untilthereis
approximately2to5mm(0.065to0.185inches)
clearancebetweentheheadoftheboltandthe
idlerarm.
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