Electrical - Suzuki UF50 Service Manual

ELECTRICAL

Complaint
No sparking or poor
sparking.
Spark plug soon be-
comes fouled with
carbon.
Spark plug electrodes
overheat or burn.
Generator does not
charge.
Generator charges
but charging rate is
below the specifica-
tions.
Generator over-
charges.
Unstable charging.
Starter switch does
not work.
Symptom and possible causes
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.
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.
1. Incorrect spark plug (hot type).
2. Overheated engine.
3. Loose spark plug.
4. Excessively lean air-fuel mixture.
5. Not enough engine oil.
1. Open or short in lead wires, or loose lead connections.
2. Shorted, grounded, or open generator coil.
3. Shorted or punctured regulator/rectifier.
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.
1. Internal short-circuit in the battery.
2. Defective regulator/rectifier.
1. Lead wire insulation frayed due to vibration, resulting
in intermittent shorting.
2. Internally shorted generator.
3. Defective regulator/rectifier.
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.
SERVICING INFORMATION
Remedy
Replace.
Replace.
Replace.
Replace.
Connect or tighten.
Adjust carburetor.
Adjust carburetor.
Change.
Clean or replace.
Change to hot type spark
plug.
Replace.
Change to cold type plug.
Tune-up.
Tighten.
Adjust carburetor.
Check oil pump.
Repair, replace or tighten.
Replace.
Replace.
Repair or tighten.
Replace.
Replace.
Replace battery.
Replace battery.
Replace.
Repair or replace.
Replace.
Replace.
Recharge or replace.
Replace.
Repair or replace.
Replace.
Replace.
Repair or replace.
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