Probable cause
Possible remedy
Ignition switch turned off.
Turn on the ignition switch.
Adjust magneto breaker points (par. 116e).
Magneto breaker points out of adjustment.
Spark plugs terminals covered with oil.
Inspect, clean, adjust, and replace (par. 117).
74.
Generator Fails to Charge
Possible remedy
Probable cause
Replace fan belt (par. 130).
Fan belt broken.
Tighten fan belt (par. 180).
Fan belt loose.
Repair or replace (par. 112).
Generator defective.
Replace ammeter (par. 120).
Ammeter defective.
Replace voltage regulator (par. 113).
Voltage regulator defective.
Tighten or replace generator leads (par. 112).
Generator leads loose or broken.
75.
Ammeter Does not Register Charge
Possible remedy
Probable cause
Replace fan belt (par. 130).
Fan belt broken.
Adjust circuit breaker (par. 192). See note in paragraph
Regulator circuit breaker open.
Replace regulator (par. 113).
Regulator defective
Replace generator (par. 112).
Generator defective.
Tighten connections.
Ammeter connections loose.
With a handle of a screwdriver tap lightly against the
Ammeter band stuck.
ammeter housing; if the hand still remains stuck,
replace the ammeter (par. 120).
Replace ammeter (par. 120).
Ammeter defective.
76.
Ammeter Shows Excessive Charge
Possible remedy
Probable cause
Adjust regulator (par. 192). See note in paragraph 55.
Regulator adjusted improperly.
Inspect and charge the battery (par. 111).
Battery discharged considerably.
Replace battery (par. 111).
Battery shorted internally.
77.
Ammeter Shows Discharge With Engine
Running
Possible remedy
Probable cause
Replace fan belt (par. 130).
Fan belt broken.
Adjust fan belt (par. 130).
Fan belt slipping.
Repair or replace generator (par. 112).
Generator defective.
Adjust circuit breaker cut-in voltage (par. 192). See note
Regulator circuit cut-in voltage too high.
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