Kawasaki Ninja Service Manual: Cylinder Compression Measurement

Kawasaki Ninja Service Manual / Engine Top End / Cylinder Head / Cylinder Compression Measurement


Use the battery which is fully charged.

Special Tools - Compression Gauge, 20 kgf/cm²: 57001-221 Compression Gauge Adapter, M10 × 1.0: 57001-1601 L-Shape Hose [C]: 57001-1606

Cylinder Compression Measurement

Cylinder Compression Usable Range: 1 099 1 668 kPa (11.2
17.0 kgf/cm²,
159 242 psi) at 320 r/min (rpm)

The following table should be consulted if the obtainable compression reading is not within the usable range.

Problem Diagnosis Remedy (Action)
Cylinder compression is higher than usable range Carbon accumulation on piston and in combustion chamber possibly due to damaged valve stem oil seal and/or damaged piston oil rings (This may be indicated by white exhaust smoke). Remove the carbon deposits and replace damaged parts if necessary.
Incorrect cylinder head gasket thickness Replace the gasket with a standard part.
Cylinder compression is lower than usable range Gas leakage around cylinder head Replace damaged gasket and check cylinder head warp
Bad condition of valve seating Repair if necessary.
Incorrect valve clearance Adjust the valve clearance.
Incorrect piston/cylinder clearance Replace the piston and/or cylinder.
Piston seizure Inspect the cylinder and replace/repair the cylinder and/or piston as necessary.
Bad condition of piston ring and/or piston ring grooves Replace the piston and/or the piston rings.
Cylinder Head

Cylinder Head Removal
Remove: Thermostat Housing (see Thermostat Removal in the Cooling System chapter) Exhaust Pipe (see Exhaust Pipe Removal) Camshafts (see Camshaft Removal) Heat Insulation Plate [A] (see E ...

Other materials:

Radiator and Radiator Fan Removal
Remove: Upper Fairing Assembly (see Upper Fairing Assembly Removal in the Frame chapter) Coolant (Drain, see Coolant Change in the Periodic Maintenance chapter) Air Cleaner Housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter) Coolant Reserve Tank (see Coolant R ...

Upper Crankcase Assembly
When installing the breather plate, replace the gasket [A] with a new one. Apply a non-permanent locking agent to the threads of the bolts [A] and tighten them. Torque - Breather Plate Bolts: 9.8 N·m (1.0 kgf·m, 87 in·lb) Install the fitting [A] until it is bottomed ...

Drive Chain Slack Adjustment
Remove the cotter pin [A], and loosen the rear axle nut [B]. Loosen the both chain adjuster locknuts [C]. If the chain is too loose, turn out the left and right chain adjusters [D] evenly. If the chain is too tight, turn in the left and right chain adjusters evenly, and kick the wheel f ...