Electrical - Suzuki LT-Z90 Manual

7-10 SERVICING INFORMATION

ELECTRICAL

NO SPARKING OR POOR SPARKING
Symptom, possible causes and remedy
• Defective CDI unit.
• Defective ignition coil.
• Defective spark plug.
• Defective generator coil.
• Loose connection of lead wire.
• Open-circuited wiring connections.
SPARK PLUG SOON BECOMES FOULED WITH CARBON
Symptom, possible causes and remedy
• Mixture too rich.
• Incorrect gasoline.
• Dirty air cleaner element.
• Incorrect spark plug.
SPARK PLUG BECOMES FOULED TOO SOON
Symptom, possible causes and remedy
• Worn piston rings.
• Worn piston or cylinder.
• Excessive clearance of valve stems in valve
guides.
• Worn stem oil seal.
SPARK PLUG ELECTRODES OVERHEAT OR BURN
Symptom, possible causes and remedy
• Too hot spark plug.
• Overheated the engine.
• Loose spark plug.
• Too lean mixture.
GENERATOR DOES NOT CHARGE
Symptom, possible causes and remedy
• Open- or short-circuited lead wires, or loose lead
connections.
• Short-circuited, grounded or open generator coil.
• Short-circuited or punctured regulator/rectifier.
GENERATOR DOES CHARGE, BUT CHARGING RATE IS BELOW THE SPECIFICATION
Symptom, possible causes and remedy
• Lead wires tend to get short- or open-circuited or
loosely connected at terminals.
• Grounded or open-circuited generator coil.
• Defective regulator/rectifier.
• Defective cell plates in the battery.
GENERATOR OVERCHARGES
Symptom, possible causes and remedy
• Internal short-circuit in the battery.
• Damaged or defective regulator/rectifier.
• Poorly grounded regulator/rectifier.
Replace.
Replace.
Replace.
Replace.
Connect or tighten.
Check and repair.
Adjust carburetor.
Change.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace with cold type plug.
Tune up.
Retighten.
Adjust carburetor.
Repair or replace or retighten.
Replace.
Replace.
Repair or retighten.
Replace.
Replace.
Replace the battery.
Replace the battery.
Replace.
Clean and tighten ground connection.