Electrical - Suzuki LT-Z250 Service Manual

9-8 SERVICING INFORMATION

ELECTRICAL

Complaint
No sparking or poor
sparking.
Spark plug is wet or
quickly becomes
fouled with carbon.
Spark plug quickly
becomes fouled with
oil or carbon.
Spark plug electrodes
overheat or burn.
Generator does not
charge.
Generator charges
but charging rate is
below specification.
Generator over-
charges.
Unstable charging.
Starter button does
not work.
Symptom and possible causes
1. Defective ignition coil.
2. Defective spark plug.
3. Defective generator.
4. Defective CDI unit.
5. Defective pickup coil.
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).
1. Worn piston ring.
2. Worn piston.
3. Worn cylinder.
4. Excessive valve-stem-to-valve-guide clearance.
5. Worn valve stem oil seal.
1. Incorrect spark plug.
2. Overheated engine.
3. Loose spark plug.
4. Excessively lean air/fuel mixture.
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, open-circuited, or
loosely connected at terminal.
2. Grounded or open-circuited stator coils or generator.
3. Defective regulator/rectifier.
1. Internal short-circuit in the battery.
2. Damaged or 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 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.
Remedy
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust carburetor.
Adjust carburetor.
Change.
Clean or replace.
Change to standard spark
plug.
Replace.
Replace.
Replace.
Replace.
Replace.
Change to cold type spark
plug.
Turn-up.
Tighten.
Adjust carburetor.
Repair, replace or connect
properly.
Replace.
Replace.
Repair or tighten.
Replace.
Replace.
Replace battery.
Replace.
Repair or replace.
Replace.
Replace.
Recharge or replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Connect, tighten or repair.