Exmark SAR481KA30 - Adjustments; Belt and Chain Tension Adjustments

Maintenance
Adjustments
Note:Shutoffengine,waitforallmovingpartsto
stop,engageparkingbrake,andremovekeybefore
servicing,cleaning,ormakinganyadjustmentsto
theunit.
CAUTION
Raisingtheunitforserviceormaintenance
relyingsolelyonmechanicalorhydraulic
jackscouldbedangerous.Themechanicalor
hydraulicjacksmaynotbeenoughsupportor
maymalfunctionallowingtheunittofall,which
couldcauseinjury.
DoNotrelysolelyonmechanicalorhydraulic
jacksforsupport.Useadequatejackstandsor
equivalentsupport.
AuxiliaryPumpDriveBelt
Adjustment
1.Stopengine,waitforallmovingpartstostop,and
removekey.Engageparkingbrake.
2.Totightenbelt,loosenthe3/8inchnylocnuton
auxiliarypumpbeltidlerpulley.Slideboltinward
inslotandretightennylocnut.
3.Whenproperlyadjusted,thebeltshouldhave1/2
inch(1.3cm)ofdeectionwiththreepoundsof
pressureonthebeltmidwaybetweentheauxiliary
pumpandenginepulley.
TransmissionDriveBelt
TensionAdjustment
•CheckingExistingBelt:
1.Stopengine,waitforallmovingpartstostop,
andremovekey.Engageparkingbrake.
2.Measurethespringlengthfrominsidethe
idlerbrackettotheinsideoftheangednut
asshowninFigure12.
Figure12
1.Measurespringlength3.Idlerbracket
2.Flangednut
3.Adjustthenutuntilthespringlengthmeasures
25/8to23/4inches(67–70mm)maximum.
•InstallingaNewBelt:
1.Stopengine,waitforallmovingpartstostop,
andremovekey.Engageparkingbrake.
2.Installthenewbelt.
3.Measurethespringlengthfrominsidethe
idlerbrackettotheinsideoftheangednutas
shownin
Figure12.Setthespringlengthto
23/8inches(60mm).
4.Starttheengineandallowthemachinetorun
for30seconds.
5.Stopengine,waitforallmovingpartstostop,
andremovekey.
6.Checkthespringlengthandadjustthe
nutuntilthespringmeasures23/8inches
(60mm).
JackshaftDriveChain
TensionAdjustment
1.Stopengine,waitforallmovingpartstostop,and
removekey.Engageparkingbrake.
2.Lifttherearoftheunitandsupportusingjack
standsorequivalentsupport.
3.Checkthechainsonbothsidesoftheunitfor
propertension.Thechainsshouldbeableto
moveupanddown1/2-3/4inch(12-19mm).
4.Loosenthehydromountingboltsandslideto
adjustthetension.
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