Service manual

MEASURING THE COMPRESSION PRESSURE
CHK
ADJ
<&
EAS00067
MEASURING THE COMPRESSION PRES-
SURE
NOTE:
Insufficient compression pressure will result in
a loss of performance.
1. Measure:
8 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. Remove:
8 panel
Refer to”FOOTREST BOARD AND IN-
NER FENDER”.
4. Disconnect:
8 spark plug cap
w
Remove the spark plug cap, the engine is
extremely hot.
5. Remove:
8spark plug
cC
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
7. Measure:
8 compression pressure
Out of specification -» Refer to steps (c)
and (d).
Compression pressure (at sea level)
Minimum
1262kPa(12.62kg/cm
2
, 179.7psi)
Standard
1450kPa(14.5kg/cm
2
, 206.5psi)
Maximum
1624kPa(16.24kg/cm
2
, 231.3psi)
3-22