Operator's Manual

Figure39
1.Bypassvalve
2.Closethebypassvalvebeforestartingtheengine.
However,donotexceed5-8ft.-lb.(7-11N·m)
torquetoclosethevalve.
Important:Runningtheenginewiththe
bypassvalveopenwillcausethetransmission
tooverheat.
CheckingtheInterlock
Switches
Ifsafetyinterlockswitchesaredisconnected
ordamagedthemachinecouldoperate
unexpectedlycausingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
Thepurposeoftheinterlockswitchesaretoprevent
theenginefromcrankingorstartingunlessthetraction
pedalisinNeutral,theEnable/Disableswitchisin
DisableandtheLowerMow/Raisecontrolisinthe
neutralposition.Inaddition,theenginewillstopwhen
thetractionpedalisdepressedwitheithertheoperator
offtheseatortheparkingbrakeengaged.
Toverifyinterlockswitchfunction:
ServiceInterval:Beforeeachuseordaily
1.Parkmachineonalevelsurface,lowerthecutting
units,stoptheengineandengagetheparkingbrake.
2.Opencontrolpanelcover.Locatewireharnessand
loopbackconnector.Carefullyunplugloopback
connectorfromharnessconnector(Figure40).
Figure40
1.Loop-backconnector
3.ConnecttheDiagnosticACEdisplayconnector
totheharnessconnector(Figure41).Makesure
correctoverlaydecalispositionedonDiagnostic
ACEdisplay.
Figure41
1.DiagnosticACE
4.TurnthekeyswitchtotheOnposition,butdonot
startmachine.
Note:Theredtextontheoverlaydecalrefersto
inputswitchesandthegreentextreferstooutputs.
5.The“inputsdisplayed”LED,onlowerrightcolumn
oftheDiagnosticACE,shouldbeilluminated.If
“outputsdisplayed”LEDisilluminated,pressand
releasethetogglebutton,onDiagnosticACE,to
changeLEDto“inputsdisplayed”.Donothold
buttondown.
6.TheDiagnosticACEwillilluminatetheLED
associatedwitheachoftheinputswhenthatinput
switchisclosed.
Individually,changeeachoftheswitchesfrom
opentoclosed(i.e.,sitonseat,engagetraction
pedal,etc.),andnotethattheappropriateLED
onDiagnosticACEwillblinkonandoffwhen
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