Kawasaki Ninja Service Manual: Cylinder (Upper Crankcase) Wear Inspection

Kawasaki Ninja Service Manual / Crankshaft/Transmission / Pistons / Cylinder (Upper Crankcase) Wear Inspection

Split the crankcase (see Crankcase Splitting).
Remove the pistons (see Piston Removal).
Assemble the cylinder (upper crankcase) [A], the cylinder head [B] and the cylinder head gasket [C].
Tighten the cylinder head bolts (see Cylinder Head Installation in the Engine Top End chapter).
Put the crankcase upside down.

Cylinder (Upper Crankcase) Wear Inspection

Since there is a difference in cylinder wear (upper crankcase) in different directions, take a side-to-side and a front-to-back measurement at each of the two locations (total of four measurements) as shown in the figure.

If any of the cylinder inside diameter measurements exceeds the service limit, replace the crankcase.

10 mm (0.39 in.) [A] 60 mm (2.36 in.) [B]

Cylinder (Upper Crankcase) Inside Diameter

Standard: 75.994 76.006 mm
(2.9919 2.9924 in.)

Service Limit: 76.09 mm (2.996 in.)

Cylinder (Upper Crankcase) Wear Inspection

Piston Installation

Apply molybdenum disulfide oil solution to the oil ring expander, and install the oil ring expander [A] in the bottom piston ring groove so the ends [B] not butt together Applymolybdenum disu ...

Piston Wear Inspection

Measure the outside diameter [A] of each piston 5 mm (0.20 in.) [B] up from the bottom of the piston at a right angle to the direction of the piston pin. If the measurement is under service ...

Other materials:

Valve Clearance
Valve and valve seat wear decreases valve clearance, upsetting valve timing. NOTICE If valve clearance is left unadjusted, wear will eventually cause the valves to remain partly open; which lowers performance, burns the valves and valve seats, and may cause serious engine damage. Valve cle ...

Intake Air Pressure Sensor #1 Removal
NOTICE Never drop the intake air pressure sensor #1 especially on a hard surface. Such a shock to the sensor can damage it. Remove: Air Cleaner Housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter) Intake Air Pressure Sensor #1 Connector [A] Remove the intake air ...

Evaporative Emission Control System (California model only)
This system routes fuel vapors from the fuel system into the running engine or stores the vapors in a canister when the engine is stopped. Although no adjustments are required, a thorough visual inspection must be made at the intervals specified by the Periodic Maintenance Chart. Inspection ...