9-8 SERVICING INFORMATION
ELECTRICAL
Complaint Symptom and possible causes Remedy
No sparking or poor
sparking.
1. Defective ignition coil.
2. Defective spark plug.
3. Defective generator.
4. Defective CDI unit.
5. Defective pickup coil.
Replace.
Replace.
Replace.
Replace.
Replace.
Spark plug is wet or
quickly becomes
fouled with carbon.
1. Excessively rich air/fuel mixture.
2. Excessively high idling speed.
3. Incorrect gasoline.
4. Dirty air cleaner element.
5. Incorrect spark plug (cold type).
Adjust carburetor.
Adjust carburetor.
Change.
Clean or replace.
Change to standard spark
plug.
Spark plug quickly
becomes fouled with
oil or carbon.
1. Worn piston ring.
2. Worn piston.
3. Worn cylinder.
4. Excessive valve-stem-to-valve-guide clearance.
5. Worn valve stem oil seal.
Replace.
Replace.
Replace.
Replace.
Replace.
Spark plug electrodes
overheat or burn.
1. Incorrect spark plug.
2. Overheated engine.
3. Loose spark plug.
4. Excessively lean air/fuel mixture.
Change to cold type spark
plug.
Tur n-up.
Tighten.
Adjust carburetor.
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 connect
properly.
Replace.
Replace.
Generator charges
but charging rate is
below specification.
1. Lead wires tend to get shorted, open-circuited, or
loosely connected at terminal.
2. Grounded or open-circuited stator coils or generator.
3. Defective regulator/rectifier.
Repair or tighten.
Replace.
Replace.
Generator over-
charges.
1. Internal short-circuit in the battery.
2. Damaged or 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 button does
not work.
1. Run down battery.
2. Defective switch contact.
3. Brushes do not seat properly on the commutator in the
starter motor.
4. Defective starter relay.
5. Defective neutral relay.
6. Defective emergency switch. (E-17)
7. Defective engine stop switch.
8. Defective neutral switch.
9. Defective parking brake switch.
10. Wiring connections loose or disconnected.
Recharge or replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Connect, tighten or repair.
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