Operator's Manual

Eachrow(across)inthelogicchartbelowidentiesinputandoutputrequirementsforeachspecicproduct
function.Productfunctionsarelistedintheleftcolumn.Symbolsidentifyspeciccircuitcondition,including
energizedtovoltage,closedtoground,andopentoground.
Inputs
Outputs
FunctionPower
ON
In
NEUTRAL
StartON
Brake
ON
PTOONInSeat
HiTempBacklap
Start
ETR
PTO
Start
——
+
OO
—
OO
++
O
Run(Off
Unit)
——
OOOOOOO
+
O
Run(On
Unit)
—
OO
—
O
—
OOO
+
O
Mow
—
OO
———
OOO
++
Backlap
——
OO
—
OO
—
O
++
HiTemp
—
O
—
OOO
•(–)Indicatesacircuitclosedtoground—LEDOn
•(O)Indicatesacircuitopentogroundor
de-energized—LEDOff
•(+)Indicatesanenergizedcircuit(clutchcoil,
solenoid,orstartinput)—LEDOn
•Ablankindicatesacircuitthatisnotinvolvedwith
thelogicchart.
Totroubleshoot,turnonthekeywithoutstartingtheengine.Identifythespecicfunctionthatdoesnotworkand
workacrossthelogicchart.InspecttheconditionofeachinputLEDtoensurethatitmatchesthelogicchart.
IftheinputLEDsarecorrect,checktheoutputLED.IftheoutputLEDilluminatesbutthedeviceisnotenergized,
measuretheavailablevoltageattheoutputdevice,thecontinuityofthedisconnecteddevice,andthepotential
voltageonthegroundcircuit(oatingground).
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