2. MAINTENANCE INFORMATION
2-6
Ignition System
Caution
y Full transistor ignition system is setup by the
manufacturer so it cannot be adjusted.
y Ignition timing check procedure is for checking
whether ignition function is in normal or not.
Connect tachometer and ignition light.
Start engine.
As engine in idle speed: 1700 rpm, aim at the
mark “F” with the ignition light which means that
ignition timing is correct.
Increase engine speed to 6000 rpm to check
ignition advance degree. If indent is located within
the ignition advance degrees, it means that the
ignition advance degree is normal.
If ignition timing is incorrect, check the full
transistor ignition set, rotor and pulse generator.
Replace it if malfunction of these parts is found.
Cylinder Compression Pressure
Warm up engine.
Turn off the engine.
Remove the trunk.
Remove the central cover.
Remove spark plug cap and spark plug.
Install compression gauge.
Full open the throttle valve, and rotate the engine
by means of starter motor.
Caution
Rotate the engine until the reading in the gauge
no more increasing.
Usually, the highest-pressure reading will be
obtained in 4~7 seconds.
Compression pressure: 12 ± 2 Kg/cm²
Check following items if the pressure is too
low:
y Incorrect valve clearance.
y Valve leaking.
y Cylinder head leaking, piston, piston ring and
cylinder worn out.
If the pressure is too high, it means carbon
deposits in combustion chamber or piston head.
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