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MEASURING THE COMPRESSION PRESSURE
EAS00067
MEASURING THE COMPRESSION PRES-
SURE
TIP
Insufficient compression pressure will result in
a loss of performance.
1. Measure:
8valve clearance
Out of specification J Adjust
Refer to “ADJUSTING THE VALVE
CLEARANCE”.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Remove:
8battery box cover
8front cover
Refer to “COVER AND PANEL”.
4. Disconnect:
8spark plug cap
WARNING
Remove the spark plug cap, the engine is
extremely hot.
5. Remove:
8spark plug
NOTICE
Before removing the spark plug, use
compressed air to blow away any dirt
accumulated in the spark plug well to
prevent it from falling into the cylinder.
6. Install:
8compression gauge 1
Compression gauge
90890-03081 (YU-33223)
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