Kawasaki Ninja Service Manual: Piston Wear Inspection

Kawasaki Ninja Service Manual / Crankshaft/Transmission / Pistons / 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 limit, replace the piston.

Piston Wear Inspection

Piston Diameter

Standard: 75.959 75.974 mm
(2.9905 2.9911 in.)
Service Limit: 75.81 mm (2.985 in.)

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]. ...

Piston Ring, Piston Ring Groove Wear Inspection

Check for uneven groove wear by inspecting the ring seating. The rings should fit perfectly parallel to groove surfaces. If not, replace the piston and all the piston rings. With the pist ...

Other materials:

Intake Air Pressure Sensor #2 Installation
NOTE The intake air pressure sensor #2 is the same part as the intake air pressure sensor #1. Installation is basically the reverse of removal. Position the intake air pressure sensor #2 [A] between the projections [B] on the rubber damper. Install the rubber damper [A] on the brac ...

Crankcase Halves Assembly
Install: Crankshaft (see Crankshaft Installation) Connecting Rods (see Connecting Rod Installation) Using a cleaning fluid, clean off any oil or dirt on the mating surface of the crankcase halves. Apply liquid gasket to the mating surface of the lower crankcase half as shown in the fi ...

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 Engine Removal in the Engine Removal/Installation chapter) Place a container under the coolant dr ...