18
OPM-129/F
TROUBLESHOOTING
Problem
Possible Causes
Won’t start
Low oil level
Fouled spark plug
Out of fuel
Start switch in OFF position
Fuel Valve turned off
Choke Open
Voltage too low
Engine speed is too low
Generator overloaded
Defective stator
Defective rotor (field)
Defective capacitor
Circuit breaker trips
Defective load
Defective receptacle
Excessive load
Voltage too high
Engine speed is too high
Generator overheating
Overloaded
Insufficient ventilation
No output voltage
Short in load (disconnect)
Tripped or defective circuit breaker
Broken or loose wire
Defective receptacle
No residual magnetism (in
generator)
Defective stator
Defective rotor (field)
Shorted capacitor
Shorted diodes on rotor
GFCI receptacle tripped
