Toro 74282 - Adjusting the Mower Belt Tension

AdjustingtheMowerBelt
Tension
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedposition,andsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Raisethemowertothetransportposition.
Important:Checktheamountoftwistinthe
beltbetweenthepulleys.Makesureitisonly
whatisspeciedinFigure49.
Important:Checkandmakesurethebeltis
installedintoboththefrontandrearbeltguides
(Figure51).
4.Checkthebelttension.Thespringloadedidler
centerboltneedstobenearthetopalignmenthole
inleftsupportplate(Figure51).
Figure51
1.Centerbolt3.Leftsupportplate
2.Alignmenthole
4.Springloadedidler
5.Ifadjustmentisrequired,loosenthemoweridler
plateandadjustit(Figure52).
6.Insertaratchetorbreakerbarintothesquare
holeinthemoweridlerplatetoadjustthetension
(Figure52).
7.Toincreasebelttension,rotatethemoweridlerplate
untilresistanceisfeltandrotationstops.Donotgo
pastwhenitstops(Figure52).
8.Tightentheidlerplatebolts(Figure52).
Figure52
1.Moweridlerplate3.Ratchetorbreakerbar
2.Squarehole
4.Idlerplatebolt
9.Checkthedistancefromtherubberstopandthe
armofthespringloadedidlerpulleywhentheidler
plateistightened.Itneedstobe0to1/4inch(0to
6mm)fromtherubberstop(Figure53).
Figure53
1.Springloadedidlerpulley
4.Idlerpulleyarm
2.Topalignmenthole5.Belt
3.0to1/4inchgap(0to6
mm)
6.Rubberbumper
10.Adjustthebelttensionandtheidlerplate,if
necessary,andtightenallhardwaresecurely
(Figure52).
11.Ifthemoweridlerplatecontactstheendofthe
adjustmentslotandmorebelttensionisrequired,a
smallchangetotherightsidexedidlercancreate
morebelttensionadjustment(Figure54).
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