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:

Special Tools and Sealant
Compression Gauge, 20 kgf/cm²: 57001-221 Valve Spring Compressor Assembly: 57001-241 Valve Spring Compressor Adapter, 25: 57001-1019 Valve Seat Cutter, 45° - 27.5: 57001-1114 Valve Seat Cutter, 45° - 32: 57001-1115 Valve Seat Cutter, 32° - 28: 57001-1119 Valve Seat Cutter ...

Special Tools
Inside Circlip Pliers: 57001-143 Oil Seal & Bearing Remover: 57001-1058 Bearing Driver Set: 57001-1129 Jack: 57001-1238 Bearing Remover Head, 15 × 17: 57001-1267 Fork Oil Level Gauge: 57001-1290 Bearing Remover Shaft, 13: 57001-1377 Fork Oil Seal Driver, 43: 57001-15 ...

Idle Speed Control Valve Actuator Input Voltage Inspection
NOTE Be sure the battery is fully charged. Turn the ignition switch to OFF. Disconnect the idle speed control valve actuator connector and connect a suitable measuring leads [A] between these connectors as shown in the figure. Main Harness [B] Idle Speed Control Valve Actua ...