Measuring The Compression Pressure - Yamaha XV1600A1999 Service Manual

CHECKING THE IGNITION TIMING/

MEASURING THE COMPRESSION PRESSURE

11. Adjust:
S installed shift rod length
Refer to "ADJUSTING THE SHIFT PEDAL".
EAS00065
MEASURING THE COMPRESSION
PRESSURE
The following procedure applies to all of the cyl-
inders.
NOTE:
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
S valve clearance
Out of specification ! Adjust.
Refer to "ADJUSTING THE VALVE CLEAR-
ANCE".
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Remove:
S rider seat
S fuel tank
Refer to "SEATS AND SIDE COVERS" and
"FUEL TANK".
4. Remove:
S camshaft sprocket cover Refer to "ROCKER
ARMS, PUSH RODS AND VALVE LIFT-
ERS".
S decompression solenoid
Refer to "CAMSHAFTS".
5. Install:
S camshaft sprocket cover
Refer to "ROCKER ARMS, PUSH RODS
AND VALVE LIFTERS".
6. Disconnect:
S spark plug cap
7. Remove:
S spark plug
CAUTION:
Before removing the spark plugs, use com-
pressed air to blow away any dirt accumu-
lated in the spark plug wells to prevent it
from falling into the cylinders.
3-17
CHK
ADJ