Toro 74969 - Using the Safety-Interlock System

UsingtheSafety-Interlock
System
WARNING
Ifthesafety-interlockswitchesare
disconnectedordamaged,themachinecould
operateunexpectedly,causingpersonal
injury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
Understandingthe
Safety-InterlockSystem
Thesafety-interlocksystemisdesignedtopreventthe
enginefromstartingunless:
•Theparkingbrakeisengaged.
•Theblade-controlswitch(PTO)isdisengaged.
•Themotion-controlleversareintheNEUTRAL-LOCK
position.
Thesafety-interlocksystemalsoisdesignedtoshut
offtheenginewhenthemotion-controlleversare
movedfromtheNEUTRAL-LOCKpositionwiththe
parkingbrakeengagedorifyourisefromtheseat
whenthePTOisengaged.
TheHorizonDisplayMonitorhassymbolstonotify
theuserwhentheinterlockcomponentisinthe
correctposition.Whenthecomponentisinthecorrect
position,thecorrespondingsymboldisplaysonthe
monitor.
g230650
Figure9
1.Symbolsdisplayonthemonitorwhentheinterlock
componentsareinthecorrectposition.
TestingtheSafety-Interlock
System
ServiceInterval:Beforeeachuseordaily
Testthesafety-interlocksystembeforeyouusethe
machineeachtime.Ifthesafetysystemdoesnot
operateasdescribedbelow,haveanAuthorized
ServiceDealerrepairthesafetysystemimmediately.
1.Sitontheseat,engagetheparkingbrake,and
movetheblade-controlswitch(PTO)totheON
position.Trystartingtheengine;theengine
shouldnotstart.
2.Sitontheseat,engagetheparkingbrake,and
movetheblade-controlswitch(PTO)totheOFF
position.Moveeithermotion-controlleverout
oftheNEUTRAL-LOCKposition.Trystartingthe
engine;theengineshouldnotstart.Repeatfor
theothercontrollever.
3.Sitontheseat,engagetheparkingbrake,
movetheblade-controlswitch(PTO)totheOFF
position,andmovethemotion-controllevers
totheNEUTRAL-LOCKposition.Nowstartthe
engine.Whiletheengineisrunning,disengage
theparkingbrake,engagetheblade-control
switch(PTO),andriseslightlyfromtheseat;the
engineshouldshutoff.
4.Sitontheseat,engagetheparkingbrake,
movetheblade-controlswitch(PTO)totheOFF
position,andmovethemotion-controllevers
totheNEUTRAL-LOCKposition.Nowstartthe
engine.Whiletheengineisrunning,center
eithermotioncontrolandmove(forwardor
reverse);theengineshouldshutoff.Repeatfor
othermotioncontrol.
5.Sitontheseat,disengagetheparkingbrake,
movetheblade-controlswitch(PTO)totheOFF
position,andmovethemotion-controllevers
totheNEUTRAL-LOCKposition.Trystartingthe
engine;theengineshouldnotstart.
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