Compression Pressure Measurement - Yamaha XT 600 AC Service Manual

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A'NDSJP
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COMPRESSION PRESSURE MEASUREMENT _
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3-14
COMPRESSION PRESSURE
MEASUREMENT
NOTE: ________________________ __
Insufficient compression pressure will result in
performance loss.
1. Remove:
-Seat
- Side covers
-Air scoops
-Cover (fuel tank)
- Fuel tank
Refer to the "SEAT, FUEL TANK AND
COVER"section.
2. Check :
-Valve clearance
Out of specification -> Adjust.
Refer to the"VALVE CLEARANCE
ADJ U STM ENT" section.
3. Install :
- Sub tank (fuel)
4 . Start the engine and let it warm up.
Then stop the engine .
5. Remove:
-Spark plug
6. Install :
- Compression gauge
CD
-Adapter
®
Compression gauge:
P/ N.YU-33223
P/ N.90890-03081
Adapter:
PI N. YU-33223-3
Extension
P/N.90890-04082