Compression Pressure Measurement - Yamaha ttr230 Service Manual

IGNITION PRESSURE CHECK/COMPRESSION PRESSURE
1
3-14
MEASUREMENT
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Checking steps:
Remove the cover 1
Start the engine.
Engine rotation:
1,400 rpm
CAUTION:
Under severe conditions, oil may be sprayed
while the engine is running. Therefore, take
care when carrying out this check.
Using the strobe light check if the
stationary point 2 stays within the
ignition range 3 indicated in the magnet
wheel.
Incorrect => Check the pulse coil.
NOTE:
The ignition point cannot be adjusted.
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4. Install:
Cover
5. Disconnect:
Strobe light
Tachometer
COMPRESSION PRESSURE
MEASUREMENT
NOTE:
Insufficient compression will result in
performance loss.
1. Check:
Valve clearance
Out of specification => Adjust.
See Section "VALVE CLEARANCE
ADJUSTMENT".
INSP
ADJUS