Operator's Manual

BeltMaintenance
ServicingtheAlternatorBelt
ServiceInterval:Aftertherst10hours
Every100hours
Checktheconditionandtensionofthebelt(Figure69)
afterevery100operatinghours.
1.Propertensionwillallow3/8inch(10mm)
deectionwhenaforceof10lbisappliedonthe
beltmidwaybetweenthepulleys.
2.Ifthedeectionisnot3/8inch(10mm),loosen
thealternatormountingbolts(Figure69).Increase
ordecreasethealternatorbelttensionandtighten
thebolts.Checkthedeectionofthebeltagainto
ensurethatthetensioniscorrect.
G01 1543
1
2
3
4
Figure69
1.Alternator
3.Compressor
2.Mountingbolt4.Idlerpulley
ServicingtheCompressorBelt
ServiceInterval:Aftertherst10hours
Every100hours
Model30446only
Checktheconditionandtensionofthebelt(Figure69)
afterevery100operatinghours.
1.Propertensionwillallow3/8inch(10mm)
deectionwhenaforceof10lbisappliedonthe
beltmidwaybetweenthepulleys.
2.Ifthedeectionisnot3/8inch(10mm),loosenthe
idlerpulleymountingbolt(Figure69).Increaseor
decreasethecompressorbelttensionandtightenthe
bolt.Checkthedeectionofthebeltagaintoensure
thatthetensioniscorrect.
Re-tensioningtheBladeDrive
Belts
ServiceInterval:Aftertherst10hours
Every50hours
Checktheconditionandtensionofthecuttingunitdrive
beltsinitiallyafter10hoursofoperationandevery50
operatinghoursthereafter.
Whenproperlytensioned,theextensionspring(hook
tohook)measurementshouldbeapproximately3.50
±.25inch(inside).Oncethecorrectspringtensionis
attained,adjustthestopbolt(carriagebolt)untilthereis
approximately.125+.060/-.000inchclearancebetween
theheadoftheboltandtheidlerarm(
Figure70).
Note:Makesurethebeltispositionedonthespring
sideofthebeltguide(Figure70).
Figure70
1.Belt4.Beltguide
2.Eyebolt5.Flangenut
3.Extensionspring
6.Stopbolt
ReplacingtheBladeDriveBelt
ServiceInterval:Every800hours
Thebladedrivebelt,tensionedbythespringloaded
idlerpulley,isverydurable.However,aftermanyhours
ofuse,thebeltwillshowsignsofwear.Signsofaworn
beltare:squealingwhenbeltisrotating,bladesslipping
whencuttinggrass,frayededges,burnmarksandcracks.
Replacethebeltifanyoftheseconditionsareevident.
1.Lowerthecuttingunittotheshopoor.Remove
thebeltcoversfromthetopofthecuttingunitand
setthecoversaside.
2.Loosentheeyeboltallowingtheremovalofthe
extensionspring(
Figure70).
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