Star EV BN72-11-AC-D, Owner'S And Service Manual

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2. Locking control when vehicle starts running, speed cannot be adjusted.
Malfunction Possible Reason
Troubleshooting
Vehicle runs at full speed
when it starts
Terminals of solenoid stick together Check or repair
Controller failure Change
Potentiometer failure Repair or change
Vehicle stops immediately
after it starts
Internal short of motor Repair or change
Motor is assembled too tight or blocked Repair or change
Controller failure Repair or change
Accelerator failure Repair or change
Normal power at low
speed, weak power at high
speed
Controller failure Check or change
Motor failure Check or change
Accelerator failure Check or change
3. Vehicle cannot change direction, only runs in one direction.
Malfunction Possible Reason
Troubleshooting
Only runs in one direction F&R switch failure Change
Controller Failure Change
4. Possible reason and troubleshooting for malfunctions of mechanic system.
System Malfunction Possible Reason
Troubleshooting
Transmission
system
Abnormal sound when
running
Clearance of rear axle decelerating
gear is too big, or the decelerating gear
is broken
Adjust, change
Transmission cross shaft is worn out Change
Gear of transmission is worn out or
damaged
Change
Flange bearing is damaged Change
Motor bearing is damaged Change
Gear liquid is deficient or empty Add gear liquid
Hard to shift gear, and/
or gear shift jumps in
different positions
Clutch cannot separate smoothly Adjust
Gear shift wire is damaged Change
Gear inside transmission case is worn
out
Change
Orientation pin is loose Change
Steering system Steering heavy
Pressure of front tire is deficient
Check the pres-
sure and inflate
Screw plug of redirector is too tight Adjust
Lack of lube in redirector
Maintain/add
lube
Toe-in is abnormal Adjust