Exmark Frontrunner 720,000 & Higher Serial Nos. - Motion Control Linkage Adjustment

Maintenance
Figure12
1.Parkbrakeengaged3.Thinnylocnut
2.Yoke
4.1/8inch(3mm)gap
betweennutandyoke.
5.Ifparkbrakedoesnotfullydisengagewhenthe
leverisdisengagedcheckthebrakerodlinkage
assembly.Theassemblyshouldmeasure73/8
inch(18.7cm)fromthecenteroftheballjoint
tothecenterofthelowerendofthelinkagerod
(seeFigure13).
Figure13
1.Balljoint3.Parkbrakelinkagerod
2.Jamnut
4.73/8inch(18.7cm)
6.Ifthelinkagedoesnotmeasure73/8inch
(18.7cm)orstilldoesnotdisengageasdesired,
removetheboltthatsecurestheballjointto
thebrakeleverandloosenthejamnutnextto
theballjoint.Rotatetheballjointinhalf-turns
counterclockwiseuntildesireddisengagementis
obtained.
MotionControlLinkage
Adjustment
WARNING
Enginemustberunninganddrive
wheelsmustbeturningsomotioncontrol
adjustmentcanbeperformed.Contactwith
movingpartsorhotsurfacesmaycause
personalinjury
Keepngers,hands,andclothingclearof
rotatingcomponentsandhotsurfaces.
1.Thisadjustmentmustbemadewiththedrive
wheelsturning.Firstraisetheframeandblockup
sothatdrivewheelscanrotatefreely.
2.Removetheelectricalconnectionfromtheseat
safetyswitch,locateddirectlyinfrontoftheseat
switchassembly.
3.Temporarilyinstallajumperwireacrossthe
terminalsintheconnectorofthemainwiring
harness.
4.Starttheengine.
5.Runtheunitatleast5minuteswiththedrive
leversatfullforwardspeedtobringhydraulic
systemoiluptooperatingtemperature.
6.Toobtaintheneutralposition,adjusttheleftand
rightpumpcontrolrodlinkagesthatconnectthe
steeringcontroltothepumpcontrolarmsuntil
thewheelsstop,orcreepslightlyinreverse.
7.Toadjusteachlinkage,loosenthejamnutnext
theballjointattheupperendofthelinkage
rodassembly.Thenrotatetheassemblyusinga
wrenchtoturnthedoublenutsontheassembly
(seeFigure14).
8.Re-tightenthejamnutagainsttheballjointon
eachside.
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