Toro 4573 - Testing the Safety Interlock System

Ifyouneedtousetheblades(PTO)whilebacking
up,turnofftheinterlockfeatureusingtheKeyChoice
switchlocatedneartheseatbracket(Figure13).
Figure13
1.KeyChoiceswitch
Youcouldbackoverachildorbystander
whilethemowerbladesorotherattachmentis
engagedandcauseseriousinjuryordeath.
•Donotmowinreverseunlessitisabsolutely
necessary.
•DonotinserttheKeyChoicekeyunlessitis
absolutelynecessary.
•Alwayslookbackwardanddownbefore
backingupthemachine.
•UsetheKeyChoiceswitchonlyifyouare
certainthatnochildrenorotherbystanders
willenterthemowingarea.
•Beveryobservantafterdeactivatingthe
interlockbecausethesoundoftheengine
maypreventyoufromnoticingthatachild
orbystanderhasenteredtheworkarea.
•Alwaysremoveboththeignitionand
KeyChoicekeysandputtheminasafe
placeoutofthereachofchildrenor
unauthorizeduserswhenyouleavethe
machineunattended.
1.Engagetheblades(PTO).
2.InserttheKeyChoicekeyintotheswitch(Figure13).
3.TurntheKeyChoicekey.
Aredlightonthefrontconsole(Figure14)turns
on,indicatingthattheinterlockisdisabled.
Figure14
1.Operating-in-reverselight
4.Operatethemachineinreverseandcompleteyour
task.
5.Disengagetheblades(PTO)toactivatethe
interlock.
6.RemovetheKeyChoicekeyandputitinasafeplace
outofthereachofchildren.
TestingtheSafetyInterlock
System
Ifthesafetyinterlockswitchesaredisconnected
ordamaged,themachinecouldoperate
unexpectedly,causingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
Testthesafetyinterlocksystembeforeyouusethe
machineeachtime.Ifthesafetyinterlocksystemdoes
notoperateasdescribedbelow,haveanAuthorized
ServiceDealerrepairthesafetyinterlocksystem
immediately.Whilesittingintheseat,performthe
followingchecks:
1.Settheparkingbrake,shiftthebladecontrol(PTO)
knobtotheEngageposition,andturntheignition
keytoStart:Theengineshouldnotcrank.
2.Shiftthebladecontrol(PTO)knobtotheDisengage
position,releasetheparkingbrake,andturnthe
ignitionkeytoStart:Theengineshouldnotcrank.
3.Settheparkingbrake,shiftthebladecontrol(PTO)
knobtoDisengage,andstarttheengine.Whilethe
engineisrunning,releasetheparkingbrakeandrise
slightlyfromtheseat:Theengineshouldstop.
4.Shiftthebladecontrol(PTO)knobintothe
Disengageposition,putthetractioncontrolpedal
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