TGB BLADE 500, Service Manual

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2. MAINTENANCE INFORMATION
2-6
Ignition System
Caution
●
C.D.I ignition system is set by manufacturer
so it cannot be adjusted.
●
Ignition timing check procedure is for
checking whether CDI function is in normal or
not.
Connect tachometer and ignition light.
Start engine.
As engine in idle speed: 1600 rpm, aim at the
mark “F” with the ignition light. Then, it is 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 is means
that the ignition advance degree is in normal.
If ignition timing is incorrect, check CDI set,
pulse 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: 9.2 ± 2 Kg/cm²
Check following items if the pressure is too low:
●
Incorrect valve clearance.
● Valve leaking.
●
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.