Operator's Manual

BeltMaintenance
CheckingtheAlternatorBelt
ServiceInterval:Every100hours
Checktheconditionandtensionofthebelts(Figure54)after
every100operatinghours.
1.Propertensionwillallow10mm(3/8inch)deection
whenaforceof44N(10lb.)isappliedonthebelt
midwaybetweenthepulleys.
2.Ifthedeectionisnot10mm(3/8inch),loosenthe
alternatormountingbolts(
Figure54).Increaseor
decreasethealternatorbelttensionandtightenthe
bolts.Checkthedeectionofthebeltagaintoensure
thatthetensioniscorrect.
Figure54
1.Mountingbolt2.Alternator
ReplacingtheBladeDrive
Belts
ServiceInterval:Every50hours
Thebladedrivebelts,tensionedbythespringloadedidler
pulleys,areverydurable.However,aftermanyhoursofuse,
thebeltswillshowsignsofwear.Signsofawornbeltare:
squealingwhenbeltisrotating,bladesslippingwhencutting
grass,frayededges,burnmarksandcracks.Replacethebelts
ifanyoftheseconditionsareevident.
1.Lowerthecuttingunittothe1inchheight-of-cut
setting,movethethrottlelevertotheSlowposition,
stoptheengine,settheparkingbrake,andremovethe
ignitionkey.
2.Removethebeltcoversfromthetopofthecuttingunit
andsetthecoversaside.
3.Usingabreakerbarorsimilartool,movetheidler
pulleyforthetopbelt(Figure55)awayfromthetop
drivebelttoreleasethebelttensionandallowthebelt
tobeslippedoffthepulleys.
Figure55
1.Topbelt3.Bottombelt
2.Top-idlerpulley4.Bottom-idlerpulley
4.Usingabreakerbarorsimilartool,movetheidler
pulleyforthebottombelt(Figure55)awayfromthe
bottomdrivebelttoreleasethebelttensionandallow
thebelttobeslippedoffthepulleys.
5.Routeanewbeltaroundthegearboxpulley,bottom
spindlepulleys,andidlerpulleyassemblyasshownin
Figure55.
6.Routeanewbeltaroundthetopspindlepulleysand
idlerpulleyassemblyasshowninFigure55.
7.Installthebeltcovers.
49