Compression Pressure Measurement - Linhai 2004 ATV 260 Service Manual

CHAPTER 3A ENGINE
Spark plug gap :
0.6-0.7 mm
6. Install:
Spark plug
NOTE:
Before installing a spark plug, clean the
Gasket surface and plug surface.
3.2.4COMPRESSION PRESSURE
MEASUREMENT
NOTE :
Insufficient compression pressure will result in
performance loss.
1. Check:
Valve clearance
Out of specification
Refer to "CALCE CLEARANCE ADJUSTMENT"
section.
2. Start the engine and let it warm up for several
minutes.
3. Turn off the engine.
4. Remove:
Spark plug
Before removing the spark plug, use com
pressed 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
If it exceeds the maximum pressure allowed→
Inspect the cylinder head, valve surfaces and
piston crown for carbon deposits.
260/ 300 / 400 cc
Adjust.
ATV SERVICE MANUAL09.0
CHAPTER 3 ENGINE PAGE. 3A- 12