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SERVICING INFORMATION 7-6
ELECTRICAL
Complaint
Symptom and possible causes
Remedy
No sparking or poor
1 _ Defective ignition coil.
Replace.
sparking.
2. Defective spark plugs.
Replace.
3. Defective generator or COl unit.
Replace.
Spark plug soon
1. Mixture too rich.
Adjust carburetor.
become fouled with
2. Idling speed set too high.
Adjust carburetor.
carbon.
3. Incorrect gasoline.
Change.
4. Dirty element in air cleaner.
Clean.
5. Too cold spark plugs.
Replace with hot type
plugs.
Spark plugs become
1. Worn piston rings.
Replace.
fouled too soon.
2. Worn piston or cylinder.
Replace.
3. Excessive clearance of valve stems in valve
Replace.
guides.
4. Worn stem oil seal.
Replace.
Spark plug electrod-
1. Too hot spark plugs.
Replace with cold type
es overheat or burn.
plugs.
2. Overheated the engine.
Tune up.
3. Loose spark plugs.
Retighten.
4. Too lean mixture.
Adjust carburetor.
Generator does not
1. Open or short lead wires, or loose lead
Repair or replace or
charge.
connections.
retighten.
2. Shorted, grounded or open generator coils.
Replace.
3. Shorted or panctured regulator/rectifier.
Replace.
Generator does
1. Lead wires tend to get shorted or open-circuited
Repair or retighten.
charge, but charging
or loosely connected at terminals.
rate is below the
2. Grounded or open-circuited stator coils or
Replace.
specification.
generator.
3. Defective regulator/rectifier.
Replace.
4. Defective cell plates in the battery.
Replace the battery.
Generator
1. Internal short-circuit in the battery.
Replace the battery.
overcharges.
2. Damaged or defective regulator/rectifier.
Replace.
3. Poorly grounded regulator/rectifier.
Clean and tighten
ground connection.
Unstable charging.
1. Lead wire insulation frayed due to vibration,
Repair or replace.
resulting in intermittent shorting.
2. Internally shorted generator.
Replace.
3. Defective regulator/rectifier.
Replace.
Starter button is not
1 . Run down battery.
Repair or replace.
effective.
2. Defective switch contacts.
Replace.
3. Not seating properly brushes on commutator in
Repair or replace.
starter motor.
4. Defective starter relay/starter interlock switch.
Replace.
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