SERVICING INFORMATION
7-7
ELECTRICAL
Complaint
Symptom and possible causes
Remedy
No sparking or poor
sparking.
1. Defective ignition coil.
2. Defective spark plug.
3. Defective stator coil or pickup coil.
4. Defective CDI unit.
5. Loose connection of lead wire.
Replace.
Replace.
Replace.
Replace.
Connect or tighten.
Spark plug soon be-
comes fouled with
carbon.
1. Excessively rich air-fuel mixture.
2. High idling speed.
3. Incorrect gasoline.
4. Dirty air cleaner element.
5. Incorrect spark plug (cold type).
6. Incorrect engine oil.
Adjust carburetor.
Adjust carburetor.
Change.
Clean or replace.
Change to hot type spark
plug.
Replace.
Spark plug electrodes
overheat or burn.
1. Incorrect spark plug (hot type).
2. Overheated engine.
3. Loose spark plug.
4. Excessively lean air-fuel mixture.
5. Not enough engine oil.
Change to cold type plug.
Tune-up.
Tighten.
Adjust carburetor.
Check oil pump.
Generator does not
charge.
1. Open or short in lead wires, or loose lead connections.
2. Shorted, grounded, or open generator coil.
3. Shorted or punctured regulator/rectifier.
Repair, replace or tighten.
Replace.
Replace.
Generator charges
but charging rate is
below the specifica-
tions.
1. Lead wires tend to get shorted or open-circuited or
loosely connected at terminal.
2. Grounded or open-circuited stator coils or generator.
3. Defective regulator/rectifier.
4. Defective battery cell.
Repair or tighten.
Replace.
Replace.
Replace battery.
Generator over-
charges.
1. Internal short-circuit in the battery.
2. Defective regulator/rectifier.
Replace battery.
Replace.
Unstable charging.
1. Lead wire insulation frayed due to vibration, resulting
in intermittent shorting.
2. Internally shorted generator.
3. Defective regulator/rectifier.
Repair or replace.
Replace.
Replace.
Starter switch does
not work.
1. Run down battery.
2. Defective switch contacts.
3. Brushes do not seat properly on the commutator in the
starter motor.
4. Defective starter relay.
5. Defective starter pinion gear assembly.
6. Defective front or rear brake light switch circuit.
Recharge or replace.
Replace.
Repair or replace.
Replace.
Replace.
Repair or replace.
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