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1. GENERAL INFORMATION GRAND DINK 125/150
POOR CHARGING (BATTERY OVER DISCHARGING OR OVERCHARGING)
Undercharging
Inspection/Adjustment Symptom Probable Cause
Start engine and test
limit voltage of battery
terminals
Voltage does not Faulty AC generator
Normal voltage increase Faulty regulator/rectifier
Faulty battery
Measure resistance
between AC generator
coil terminals
Normal Resistance too low Shorted AC generator coil
Open circuit between AC
generator 3 yellow wires
Test output voltage of
regulator/rectifier
coupler red wire
Faulty regulator/rectifier
Faulty AC generator
Normal voltage No voltage Loose regulator/rectifier
coupler
Limit voltage too high
Overcharging
Inspection/Adjustment Symptom Probable Cause
Measure battery limit
voltage with an electric
tester
Faulty battery
Normal Abnormal Faulty regulator/rectifier
Broken or poorly connected
regulator/rectifier black wire
Check resistance
between regulator/
rectifier terminals
Normal Abnormal Limit voltage too high
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