Sym PA12B Service Manual page 22

2.
Starting Motor rotates slowly or spins without engagement with crankshaft
Check and adjustment
Check the battery circuit by
activating turning signal
Flashing normally
Connect the starting
motor to the battery
Starting Motor Still
rotating slowly
Kick the kick starter
Works smoothly
3.
Starter motor won't stop rotating
Turn the main switch off
Motor keeps running
F. Abnormal Engine Noise
Fault condition
Rocker arm noise
Piston slapping
Cam chain noise
To this chapter contents
Fault condition
Not flashing or dimmed
Rotates Normally
Jammed
Motor stops
Possible causes
1. Excessive valve clearance
2. Worn rocker arm
3. Worn camshaft
1. Worn piston and cylinder
2. Carbon deposit in the combustion chamber
3. Worn piston pin or connecting rod lower end
1. Worn camshaft bearings.
2. Worn cam sprocket.
3. Loose or worn cam chain.
1. General Information
Possible causes
1. Insufficient Battery capacity
1. Loose coupler or terminals
2. Starting Relay bad contact
1. Engine Seized.
1. Starting Motor shorted or damaged
1. Starting switch shorted/ stuck
1. Starting relay shorted
1-17