Section 5 • Troubleshooting
Part No. 218567 AL4 • AL4000 5 - 5
August 2016
TROUBLESHOOTING
Possible Cause SolutionProblem
Generator will not hold voltage
(loss of residual magnetism)
Machine has been unused for
signifi cant length of time
Flash the rotor
Rotor shorting out when unit gets
hot
Inspect rotor windings for broken
and/or burned wires
Pinched leads Inspect and repair as needed
Faulty capacitor Replace
Faulty diode Replace
Faulty surge suppressor Replace
Generator voltage low Loss of residual magnetism Flash the rotor
Low engine speed Adjust idle. See Repair Section.
Faulty diode Replace
Generator voltage spikes Incorrect engine adjustment, fuel
line or faulty fuel
Change fuel fi lter and check
engine speed
Loose connection Inspect all connections and repair
as needed
Faulty ground connection Inspect all ground connections
and repair as needed
Load induced Filter load
Faulty capacitor Replace
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