(X)Measuring Of Compressive Force - ATV 250 Service Manual

(X)Measuring of compressive force

Caution
Inadequate compressive force will reduce the
engine performance.
Before measuring compressive force. Valve
clearance should be adjusted first (refer to
"Adjustment of valve clearance section).
1.Put the vehicle on the flat ground.
2.Take off spark plug.
3.The following is steps of measuring com-
pressive force:
a.Install pressure gauge and change
connector.
b.Turn the throttle lever to Max point.
Start the engine with power (battery has
charged enoughly)until no increase of read
pressure gauge.
Warning
When starting the engine, the spark plug must
be connected to ground for avoilding spark.
c.When checking the following ,the read of
pressure gauge:
Compressive force on sea level:
2
Standard value:9000Kpa(9.0kg/cm )
Min.Value:800Kpa(8.0kg/cm 2 )
2
Max.Value:1000Kpa(10.0kg/cm )
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