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PROPEL SYSTEM TROUBLESHOOTING
QTFSG/QTFSD 98349 05/15/03
4-16
PROBLEM. CAUSE SOLUTION
No propelling Low battery charge Charge battery.
Controller overheated Thermal switch tripped. Allow cool down period.
Loose or broken wires or
motor failure
Located, then fix or replace wire(s). Check motor for
binding. Check motor for failure.
Blown fuse (120A) Replace fuse.
Main contactor failure Replace main contactor.
Key operated on/off switch
failure
Replace on/off switch.
Chain failure Repair chain.
Machine moves without
pressing foot pedal
Throttle not set at “neutral“
position
Adjust linkage.
Full speed only Pedal linkage frozen Repair or adjust linkage.
Machine will not reach
full speed
Transmission belt slipping
or linkage needs
adjustment
Charge battery.
Forward speed only Transmission failure Inspect, repair or replace.
Reverse speed only Transmission failure Inspect, repair or replace.
Sporadic operation Transmission failure Inspect, repair or replace.