Kawasaki Ninja Service Manual: Piston Wear Inspection

Kawasaki Ninja Service Manual / Crankshaft/Transmission / Pistons / Piston Wear Inspection

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 Temperature Sensor Resistance Inspection
Remove the intake air temperature sensor (see Intake Air Temperature Sensor Removal). Suspend the sensor [A] in a container of machine oil so that the heat-sensitive portion is submerged. Suspend a thermometer [B] with the heat-sensitive portion [C] located in almost the same depth with ...

General Lubrication
Lubricate the points shown below, with either motor oil or regular grease, in accordance with the Periodic Maintenance Chart or whenever the vehicle has been operated under wet or rainy conditions. Before lubricating each part, clean off any rusty spots with rust remover and wipe off any g ...

Air Switching Valve
Air Switching Valve Operation Test Refer to the Air Suction System Damage Inspection in the Periodic Maintenance chapter. Air Switching Valve Unit Test Remove the air switching valve (see Air Switching Valve Removal in the Engine Top End chapter). Set the hand tester [A] to the × 1 ...