Measuring The Compression Pressure - Yamaha FZS1000N Service Manual

CHECKING THE IGNITION TIMING/

MEASURING THE COMPRESSION PRESSURE

b. Check that the mark a is within the required
firing range b on the pickup coil rotor.
Incorrect firing range
system.
NOTE:
The ignition timing is not adjustable.
4. Remove:
timing light
engine tachometer
5. Install:
timing plug
EAS00065
MEASURING THE COMPRESSION PRES-
SURE
The following procedure applies to all of the cyl-
inders.
NOTE:
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
valve clearance
Out of specification
Refer to "ADJUSTING THE VALVE CLEAR-
ANCE".
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 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.
5. Install:
compression gauge 1
Compression gauge set
YU-33223
Compression gauge adapter
YU-33223-3
3-17
CHK
ADJ
Check the ignition
Adjust.