4. Detach:
• timing light
• engine tachometer
5. Install:
• Shroud cap
The ignition timing is not adjustable.
CHECKING THE IGNITION TIMING/
MEASURING THE COMPRESSION
PRESSURE
Insufficient compression pressure will result in
a loss of performance.
1. Measure:
• 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. Disconnect:
• spark plug cap
4. Remove:
• spark plug
Before removing as park plug,use compressed
air to blow away any dirt accumulated in the
spark plug well to prevent it from falling into the
cylinder.
5. Attach:
• compression gauge
6. Measure:
• compression pressure
Out of specification → 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
(13.5kg/cm , 195.8 psi)
1
MEASURING THE COMPRESSION PRESSURE
CHK
ADJ
TIP
TIP
რ
NOTICE
1
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