Toro 74990 - Belt Maintenance; Inspecting the Belts; Replacing the Mower Belt

BeltMaintenance
InspectingtheBelts
ServiceInterval:Every50hours
Checkthebeltsforsquealingwhenthebeltisrotating,
bladesslippingwhencuttinggrass,frayedbeltedges,
burnmarks,andcracks.Thesearesignsofaworn
mowerbelt;replacethemowerbeltifanyofthese
conditionsareevident.
ReplacingtheMowerBelt
Squealingwhenthebeltisrotating,bladesslipping
whencuttinggrass,frayedbeltedges,burnmarks,
andcracksaresignsofawornmowerbelt.Replace
themowerbeltifanyoftheseconditionsareevident.
1.DisengagethePTO,movethemotion-control
leverstotheneutral-lockedposition,andsetthe
parkingbrake.
2.Stoptheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Lowerthemowertothe76mm(3inch)height
ofcut.
4.Removethebeltcovers(Figure78).
g027729
Figure78
1.Pushtabdown2.Removebeltcover
5.Usearatchetinthesquareholeintheidlerarm
toremovetensionontheidlerspring(Figure79).
6.Removethebeltfromthemowerdeckpulleys.
7.Removethebeltguideonthespring-loaded
idlerarmshowninFigure79.
8.Removetheexistingbelt.
9.Installthenewbeltaroundthemowerpulleys
andtheclutchpulleyundertheengine(Figure
79).
g009038
Figure79
1.Clutchpulley5.Squareholeintheidler
armfortheratchet
2.Mowerbelt
6.Idlergreasetting
3.Spring-loadedidlerpulley
7.Beltguide
4.Ratchet
10.Installthebeltguideontheidlerarmshownin
Figure79.
11.Usingtheratchetinthesquarehole,installthe
idlerspring(Figure79).
Makesurethatthespringendsareseatedin
theanchorgrooves.
12.Installthebeltcovers(Figure80).
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