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Cylinder Head; Compression Measurement - Kawasaki KLX110 Service Manual

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Cylinder Head

Compression Measurement

Warm up the engine thoroughly
Stop the engine.
Remove the spark plug and attach compression gauge and adapter
firmly into the spark plug hole.
Special Tools - Compression Gauge: 57001–221 [A]
Compression Gauge Adapter, M10X1.0: 57001–1317 [B]
With the throttle fully open, turn the engine over sharply with the kick
starter several times until the compression gauge stops rising; the
compression is the highest reading obtainable.
Cylinder Compression
Usable Range:
865
(8.8
The following table should be consulted if the obtainable compression reading is not within the usable range.
Problem
Cylinder compression is higher
than usable range
Cylinder compression is lower
than usable range
Remove the compression gauge, adapter and install the spark plug.
Torque -
Spark Plug: 13 N
1320 kPa
2
13.5 kgf/cm
, 125
192 psi) @5 kicks
Diagnosis
Carbon accumulation on piston and in
combustion chamber possibly due to dam-
aged valve stem oil seal and/or damaged
position oil rings (This may be indicated
by white exhaust smoke).
Incorrect cylinder head gasket, cylinder
base gasket thickness.
Gas leakage around cylinder head.
Bad condition of valve seating.
Incorrect valve clearance.
Incorrect piston/cylinder clearance.
Piston seizure.
Bad condition of piston ring and/or piston
ring grooves.
m (1.3 kgf
m, 9.6 ft
lb)
1
1
1
ENGINE TOP END 4-17
Remedy (Action)
Remove the carbon deposits and re-
place damaged parts if necessary.
Replace to gasket with a standard
part.
Replace damaged gasket and check
cylinder head warp.
Repair if necessary.
Adjust the valve clearance.
Replace the piston and/or cylinder
Inspect the cylinder (and liner) and
replace/repair the cylinder and/or pis-
ton as necessary.
Replace the piston and/or the piston
rings.

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