Suzuki LT-Z400 2003 - ELECTRICAL

H SERVICING INFORMATION
ELECTRICAL
Complaint
Symptom and possible causes
Remedy
No sparking or poor
1. Defective ignition coil.
Replace.
sparking.
2. Defective spark plug.
Replace.
3. Defective generator.
Replace.
4. Defective COl unit.
Replace.
S.
Defective pickup coil.
Replace.
Spark plug Is wet or 1.
Excessively rich air/fuel mixture.
Adjust carburetor.
quickly becomes 2.
Excessively high idling speed.
Adjust carburetor.
fouled with carbon. 3.
Incorrect gasoline. Change.
4. Dirty air cleaner element.
Clean or replace.
S. Incorrect spark plug (cold type ).
Change to standard spark
plug.
Spark plug quickly
{
Worn piston ring.
Replace.
becomes fouled with 2. Worn piston.
R eplace.
oil or carbon. 3. Worn cy linder.
Replace.
4. Excessive valve-stem-to-valve-guide clearance.
Replace.
S. Worn valve stem oil seal. Replace.
Spark plug electrodes 1. Incorrect spark plug.
Change to cold type spark
overheat
or burn.
plug.
2. Overheated engine.
Turn-up.
3. loose spark plug.
Tighten.
4.
Excessively lean ai r/fuel mixture. Adjust carburetor.
Generator
does not 1. Open or short in lead wires, or loose lead connections. Repair, replace or connect
charge. properly.
2. Shorted, grounded or open generator coil. Replace.
3.
Shorted or punctured regulator/rectifier. Replace.
Generator charges
1. lead
wires tend to get shorted, open-circuited, or Repair or tighten.
but charging rate is loosely connected at terminal.
below specification . 2. Grounded or open-circuited stator coils or generator. Replace.
3. Defective regulator/rectifier. Replace.
Generator over·
1.
Internal short-circuit in the battery.
Replace battery.
charges.
2. Damaged or defective regulator/rectifier. Replace.
Unstable
charging . 1. Lead wire insulation frayed due to vibration, resulting in Repair or replace.
intermittent shorting.
2. Internally shorted generator. Replace.
3. Defective regulator/rectifier. Replace.
Starter button does 1.
Run down battery. Recharge or replace.
not work.
2.
Defective switch contact. Replace.
3.
Brushes do not seat properly on the commutator in the Repair or replace.
starter motor.
4. Defective starter relay. Replace.
s.
Defective neutral relay.
Replace.
6. Defective engine SlOp switch. Replace.
7. Defective neutral switch. Replace.
8. Defective clutch lever position switch. Replace.
9. Wiring connections loose or disconnected. Connect, tighten or repair.