MEASURING THE COMPRESSION
PRESSURE
Insufficient compression pressure will result in
a loss of performance.
1. Measure:
• valve clearance
Out of specification
ĺ
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
Before removing a 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. Attach:
• compression gauge
6. Measure:
• compression pressure
Out of specification
ĺ
Refer to steps (c)
and (d).
Compression pressure (at sea
level)
Minimum
1,050 kPa/1,000 r/min
(10.5kg/cm , 152.3 psi)
2
Standard
1,250 kPa/1,000 r/min
(12.5kg/cm , 181.3 psi)
2
Maximum
1,350 kPa/1,000 r/min
2
3 - 15
MEASURING THE COMPRESSION PRESSURE
CHK
ADJ
(13.5kg/cm , 195.8 psi)
TIP
რ
NOTICE
