Service manual

4. Troubleshooting
4-7
4.4 Engine Troubleshooting
4.4.1 Anything abnormal is not shown, but it sometimes stops without its cause
shown
(Excluding the cases of faulty contact of starter switch and fuse broken)
4.4.2 At start-up, starter rotates slowly
※1：When starter switch is placed at the “START” position, the battery is not normal if B terminal
voltage decreases by 10V or 20V.
Disconnected
Faulty
Repair.
Normal
Replace it.
Replace it or repair
connection.
Normal
Faulty
Normal
Replace it or repair
connection.
Faulty
Re-charge and or
supply water/replace.
Faulty
Normal
※1
V
olt: more than 12V or 24V
Gravity: more than 1.26
Replace terminal or
assembly.
Faulty
Normal
Replace terminal or
assembly.
Faulty cable
connection.
Check cable connection
to emergency stop
monitor.
Malfunction of stop
solenoid.
Check if stop solenoid
functions well.
Faulty relay or cable
connection.
Check if stop solenoid
relay functions well.
Faulty controller or
cable connection.
Check if controller
functions well.
Battery specific gravity
too low or electrolyte
short.
Check battery voltage
and specific gravity.
Faulty cable.
Check battery cable.
Faulty starter motor.