Toro 74253 - Adjusting the Mower Belt Tension for 72 Inch Mower Decks

Figure56
1.Beltcover3.Insertslotintothetab
2.Latch
4.Loosentheidlerplateboltsholdingtheidlerplate
(Figure59).
5.Removetheidlerspring.
6.Removethebeltguideonthespringloadedidler
pulleyshowninFigure57andFigure59.
7.Removetheexistingbelt.
8.Installthenewbeltaroundthemowerpulleysand
thegearboxpulleyundertheengine(Figure57).
Figure57
1.Mowerbelt
5.Gearboxpulley
2.Mowerspindlepulley6.Idlerspring
3.Springloadedidlerpulley
7.Idlerplate
4.Beltguideata45degree
angle
9.Installthebeltguideonthespringloadedidlerata
45degreeangleasshowninFigure55andFigure59.
Torquetheboltto27to33ft-lb(37to45N-m).
10.Installtheidlerspringtothetwoposts(Figure55
andFigure59).
11.Adjustthebelttension,refertoAdjustingtheMower
BeltTension.
12.Installthebeltcoversbyslidingthecoverintothe
tab,installthebolts,andclosethelatches(Figure58).
Figure58
1.Beltcover3.Insertslotintothetab
2.Latch
AdjustingtheMowerBelt
Tensionfor72inchMower
Decks
ServiceInterval:Aftertherst8hours
Important:Toensurepropermowerbelttension,
whichwillresultinalongerbeltlife,checkthe
mowerbelttensionaftertherst8hoursofuseand
8hoursaftereachbeltchange.
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedposition,andsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Adjustthemowerdecktothe3inch(76mm)
height-of-cutposition.
4.Measurethespringlength(Figure59).Ifthespring
lengthisbetween10and10-1/4inches(25.4and
26.0cm),fromposttopost,noadjustmentisneeded.
5.Loosentheboltsholdingtheidlerplate(Figure59).
6.Insertaratchetorbreakerbarintothesquareholein
theidlerplatetoadjustthetension(Figure59).
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