ADLY MOTO
2-7
CHECK AND ADJUST
IGNITION TIMING
z
Using the timing light to check the ignition
timing.
z
Keep the engine speed about 4000 rpm, if 2
mark-lines on flywheel aim at center of
inspection hole then the ignition timing is
correct.
CYLINDER PRESSURE
z
Remove the spark plug cap and spark plug.
z
Install the pressure gauge.
z
Rotate the throttle and press the electric
start button.
The normal cylinder pressure is 12~14 kg/cm
2.
If the cylinder pressure is too low then check the
following items
Κ
- Valve leakage?
- Valve gap is too tie?
- Cylinder head gasket is damage?
- Piston ring wear-out?
- Piston, cylinder wear-out?
If the cylinder pressure is too high then check the
combustion chamber and the top face of piston
whether with too much carbon residue.
