No Spark At Plug; Engine Starts But Turns Poorly; Ignition System; Starting System - KYMCO SUPER 9 50 Service Manual

15
. ELECTRICAL EQUIPMENT

IGNITION SYSTEM

No spark at plug

• Faulty spark plug
• Poorly connected, broken or shorted wire
—Between A.C. generator and CDI unit
—Between CDI unit and ignition coil
—Between CDI unit and ignition switch
—Between ignition coil and spark plug
• Faulty ignition switch
• Faulty ignition coil
• Faulty CDI unit
• Faulty A.C. generator

STARTING SYSTEM

Starter motor won't turn
• Fuse burned out
• Weak battery
• Faulty ignition switch
• Faulty starter switch
• Faulty front or rear stop switch
• Faulty starter relay
• Poorly connected, broken or shorted wire
• Faulty starter motor

Engine starts but turns poorly

• Ignition primary circuit
—Faulty ignition coil
—Poorly connected wire or connector
• Ignition secondary circuit
—Faulty ignition coil
—Faulty spark plug
—Poorly insulated plug cap
• Improper ignition timing
—Battery voltage too low (6V max.)
—Faulty CDI unit
Lack of power
• Weak battery
• Loose wire or connection
• Foreign matter stuck in starter motor
or pinion
Starter motor rotates but engine does
not start
• Faulty starter pinion
• Starter motor rotates reversely
• Faulty starter clutch
• Weak battery
SUPER 9 50
15-2