Toro Groundsmaster 4100-D 30411 - Checking the Interlock Switches

2.Movethethrottlecontroltothemid-idleposition.
3.TurntheignitionkeytotheRunposition.Theglow
indicatorwilllight.
4.Whentheglowindicatordims,turntheignitionkey
totheStartposition.Releasethekeyimmediately
whentheenginestartsandallowittoreturntothe
Runposition.Allowenginetowarmupatmid
speed(withoutload),thenmovethethrottlecontrol
tothedesiredposition.
Important:Donotrunthestartermotor
morethan15secondsatatimeorpremature
starterfailuremayresult.Iftheenginefailsto
startafter15seconds,turnthekeytotheOff
position,recheckthecontrolsandprocedures,
wait15additionalseconds,andrepeatthe
startingprocedure.
Whenthetemperatureislessthan20°F(-75C),
preheatglowplugstwicepriortoinitialcranking
attempt.Thestartermotorcanberunfor30
secondsonthen60secondsofffor2attempts.
5.Whentheengineisstartedforthersttime,or
afteranoverhauloftheengine,transmission,or
axle,operatethemachineinforwardandreversefor
oneortwominutes.Alsooperatetheliftleverand
PTOlevertoensureproperoperationofallparts.
Turnthesteeringwheeltotheleftandrightto
checksteeringresponse.Thenshuttheengineoff
andcheckforoilleaks,looseparts,andanyother
noticeabledifculties.
Shuttheengineoffandwaitforallmoving
partstostopbeforecheckingforoilleaks,loose
parts,andothermalfunctions.
6.Tostoptheengine,movethethrottlecontrol
backwardtotheSlowposition,movethePTOlever
totheOffposition,settheparkingbrake,androtate
theignitionkeytoOff.Removethekeyfromthe
switchtopreventaccidentalstarting.
Important:Allowenginetoidlefor5minutes
beforeshuttingitoffafterafullloadoperation.
Failuretodosomayleadtoturbo-chargertrouble.
CheckingtheInterlock
Switches
Ifsafetyinterlockswitchesaredisconnected
ordamagedthemachinecouldoperate
unexpectedlycausingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
Themachinehasinterlockswitchesintheelectrical
system.Theseswitchesaredesignedtostoptheengine
whenoperatorgetsoffoftheseatwhenthetraction
pedalisdepressed.However,theoperatormaygetoff
oftheseatwhiletheengineisrunningandthetraction
pedalisinneutral.Althoughtheenginewillcontinue
torunifthePTOleverisdisengagedandthetraction
pedalisreleased,itisstronglyrecommendedthatthe
enginebestoppedbeforerisingfromtheseat.
Tochecktheoperationoftheinterlockswitches,
performthefollowingprocedure:
1.Drivethemachineslowlytoalarge,relativelyopen
area.Lowerthecuttingunit,stoptheengine,and
applytheparkingbrake.
2.Sitontheseatanddepressthetractionpedal.Try
tostarttheengine.Theengineshouldnotcrank.
Iftheenginecranks,thereisamalfunctioninthe
interlocksystemthatshouldbecorrectedbefore
beginningoperation.
3.Sitontheseatandstarttheengine.Risefromthe
seatandmovethePTOlevertoOn.ThePTO
shouldnotengage.IfthePTOengages,thereisa
malfunctionintheinterlocksystemthatshouldbe
correctedbeforebeginningoperation.
4.Sitontheseat,engagetheparkingbrakeandstart
theengine.Movethetractionpedaloutofthe
neutralposition.Theengineshouldkill.Ifthe
enginedoesnotkill,thereisamalfunctioninthe
interlocksystemthatshouldbecorrectedbefore
beginningoperation.
5.Sitontheseat,starttheengineandsetspeedrange
tolow.MovePTOswitchforwardtoengagecutting
units.
Important:Thecenterliftlevermust
momentarilybepushedtothelowerpositionto
enablePTOcircuitactuationbyPTOswitch.
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