Toro 74920 - Belt Inspection and Replacement; Inspecting the Belts; Replacing the Mower Belt

thentightenthefourlevelingadjustlockingnuts
(Figure72).
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2
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Figure72
1.Deckliftarm4.Slotindeckhanger
2.Deckhanger
5.Slotinreardeckhanger
bracket
3.Levelingadjustlockingnut6.Reardeckhangerbracket
5.Recheckthatblockstjustsnuglyunderthedeck
skirt.Makesureallattachmentboltsaretight
6.Verifythedeckislevelbycheckingtheside-to-side
levelandfront-to-rearbladeslope;repeatdeck
levelingprocedureifnecessary.
InspectingtheBelts
ServiceInterval:Every50hours
Checkthebeltsforsquealingwhenthebeltisrotating,
bladesslippingwhencuttinggrass,frayedbeltedges,
burnmarksandcracksaresignsofawornmowerbelt.
Replacethemowerbeltifanyoftheseconditionsare
evident.
ReplacingtheMowerBelt
Squealingwhenthebeltisrotating,bladesslippingwhen
cuttinggrass,frayedbeltedges,burnmarksandcracks
aresignsofawornmowerbelt.Replacethemowerbelt
ifanyoftheseconditionsareevident.
1.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockedposition
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Lowerthemowertothe3inch(76mm)height-of-cut
position.
4.Foreachofthebeltcovers,loosenthetwoboltsbut
donotremovethem.Slidethecoveruntilitisclear
oftheboltsandliftitupandouttoremoveit.
5.Removetheoorpantoaccesstheidlerpulley;
refertotheRemovingtheFloorPanprocedurein
Premaintenance.
6.Usingaspringremovaltool,(Toropartno.92-5771),
removetheidlerspringfromthedeckposttoremove
tensionontheidlerpulley(Figure73).
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Figure73
1.Springremovaltool(T oro
partno.92-5771)
4.Idlerarm
2.Idlerspring5.Mowerbelt
3.Deckpost
7.Lowerthemowertothelowestheight-of-cut.Place
theheight-of-cutpininthelockpositionforlowest
height-of-cut.
8.Removethebeltfromthemowerdeckpulleysand
removetheexistingbelt.
9.Installthenewbeltaroundthemowerpulleysand
theclutchpulleyundertheengine(Figure73).
WARNING
Thespringisundertensionwheninstalledand
cancausepersonalinjury.
Becarefulwhenremovingthebelt.
10.Usingaspringremovaltool,(Toropartno.92-5771),
installtheidlerspringoverthedeckpostand
placingtensionontheidlerpulleyandmowerbelt
(
Figure73).
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