Toro 74274 - Belt Maintenance; Adjusting the Mower Belt Tension

Figure55
1.Mowerbelt
5.Gearboxpulley
2.Mowerspindlepulley6.Idlerspring
3.Springloadedidlerpulley
7.Idlerplate
4.Beltguideata45degree
angle
9.Installthebeltguideonthespringloadedidlerata
45degreeangleasshowninFigure55andFigure57.
Torquetheboltto27to33ft-lb(37to45N-m).
10.Installtheidlerspringtothetwoposts(Figure55and
Figure57).
11.Adjustthebelttension,refertoAdjustingtheMower
BeltTension.
12.Installthebeltcoversbyslidingthecoverintothe
tab,installthebolts,andclosethelatches(Figure56).
Figure56
1.Beltcover3.Insertslotintothetab
2.Latch
AdjustingtheMowerBelt
Tension
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(Figure57).Ifthespring
lengthisbetween10and10-1/4inches(25.4and
26.0cm),fromposttopost,noadjustmentisneeded.
5.Loosentheboltsholdingtheidlerplate(Figure57).
6.Insertaratchetorbreakerbarintothesquareholein
theidlerplatetoadjustthetension(Figure57).
7.Rotatetheratchetorbreakerbartomovetheidler
plateuntiltheidlerspringisbetween10and10-1/4
inches(25.4and26.0cm)fromposttopostas
showninFigure57.
8.Whileholdingthebelttensionandspringlength,
tightentheidlerplateboltsthatsecuretheidlerplate
(Figure57).
Figure57
1.Beltguideinstallata45
degreeangle
4.Ratchetorbreakerbar
2.Idlerspringlength
(between10and10-1/4
inches(25.4and26.0cm))
5.Idlerplatebolt
3.Idlerplate
44