Sym PA12B User Manual

13. Electrical System
13-4
Troubleshooting
Charging system
No battery voltage
z Battery discharged
z The cable disconnected
z The fuse is blown
z Improper operation of the main switch
Low battery voltage
z The battery is not fully charged
z Poor contact
z Poor charging system
z Poor regulator rectifier
Intermittent power supply
z Loose charging system coupler
z Poor contact of the battery cable
Poor charging system
z Burned fuse
z Poor contact, open or short circuit
z Poor regulator rectifier
z Poor ACG
Ignition system
No spark
z Poor spark plug
z The cable is poorly connected, open or
short-circuited
~between AC. Generator / C.D.I.
~between C.D.I. / ignition coil
~between C.D.I. / main switch
z Poor main switch
z Poor C.D.I.
z Poor AC. Generator
Engine does not crank smoothly
z Primary winding circuit
~Poor ignition coil
~Poor contact of cable
~Poor contact of main switch
z Secondary winding circuit
~Poor ignition coil
~Poor spark plug
~Poor ignition coil cable
~Current leakage from spark plug cap
z Incorrect ignition timing
~Poor AC. Generator
~Improper installation of pulse coil
~Poor C.D.I.
Starting system
Starter motor does not work
z The fuse is blown
z The battery is not fully charged
z Poor main switch
z Poor starter switch
z The front and rear brake switches do not
operate correctly
z Poor starter relay
z The ignition coil is poorly connected, open
or short-circuited
z Poor starter motor
Weak starter motor
z Poor charging system
z Insufficient battery voltage
z Poor contact of power cable
z The starter motor gear is stuck by foreign
material
Starter motor works but engine does not
crank
z Poor starter motor pinion
z The starter motor run in reverse direction
z Poor starter clutch
Poor battery
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Sym PA12B Specifications

General

Brand	Sym
Model	PA12B
Category	Motorcycle
Language	English