AdjustingthePrimaryV-Belts
1.ToadjustthebelttensiononprimaryV-belts,rst
checktheadjustmentofthetractioncontrol.Refer
toAdjustingtheTractionControl.Ifunabletoattain
the3to5lb(1.5to2.3kg)forcerequiredinadjusting
thetractioncontrol,proceedtonextstep.
2.LoosentheretainersecuringtheV-beltcoverand
pivotthecoveropen(Figure29).
Figure29
1.V-beltcover2.Retainer
3.Toincreasebelttension,loosentheenginemounting
boltsandmoveenginebackwardsintheslots.
Important:Donotovertensionthebelt.
4.Tightenthemountingbolts.
Note:Thedistancebetweenthecentersofthe
driverandthedrivenpulleysshouldbeapproximately
5.18inches(13.15cm)afternewV-beltsareinstalled.
5.AftertensioningtheprimaryV-belts,checkthe
alignmentoftheengineoutputshaftpulleyandthe
countershaftpulleywithastraightedge.
6.Ifthepulleysaremisaligned,loosenthescrews
securingtheenginemountingbasetothemower
frameandslidetheenginefromsidetosideuntilthe
pulleysarealignedwithin0.030inch(0.07cm).
Figure30
1.PrimaryV-belts3.Idlerpulley
2.Beltguide
7.Tightenthemountingscrewsandcheckthe
alignment.
8.Topushorpullthemachineeasierwithoutstarting
theengine,adjustthebeltguide(Figure30,inset)
asfollows:
A.Engagetheclutch.
B.Loosentheboltsecuringtheidlerpulleyandbelt
guidetotheidlerarm.
C.Rotatethebeltguideclockwiseuntilagapof
approximately0.06inch(0.15cm)isobtained
betweentheguidengerandthebacksideofthe
drivebelts.
D.Tightentheboltandlocknutsecuringtheidler
pulleyandbeltguidetotheidlerarm.
9.Closethecoverandsecuretheretainer.
ReplacingtheDifferentialBelt
1.Removetheboltssecuringthetractiondriveandreel
drivebeltcoverstotherightsideplateandremove
thebeltcovers.
2.Loosentheidlerpulleymountingnut,oneachidler
pulley,andpivoteachidlerpulleycounterclockwise
awayfromthebacksideofeachbelttoreleasebelt
tension.
3.Removethebelts.
4.Removetheboltssecuringthefrontandrearsections
ofthedifferentialcovertothedifferentialhousing
andslidethecoversectionsawaytoexposethebelt
(Figure31).
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