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CHK
ADJ
CHECKING THE SPARK PLUG/
MEASURING THE COMPRESSION PRESSURE
10.Install:
• center cover
• seat
Refer to “INSTALLING THE SEAT AND
SIDE COVERS”.
EAS00067
MEASURING THE COMPRESSION
PRESSURE
NOTE:
_
Insufficient compression pressure will result in
a loss of performance.
1. Measure:
• valve clearance
Out of specification → Adjust
Refer to “ADJUSTING THE VALVE
CLEARANCE”.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Disconnect:
• spark plug cap
4. Remove:
• spark plug
CAUTION:
_
Before removing the spark plug, use com-
pressed air to blow away any dirt accumu-
lated in the spark plug well to prevent it
from falling into the cylinder.
5. Install:
• compression gauge 1
Compression gauge
90890-03081
1
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