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:

Rocker Arm Installation
Install the both rocker arms [A] so that their marks [B] face left side. Replace the tie-rod nut, rear shock absorber nut and rocker arm nut with new ones. Apply grease to the inside of the oil seals. Tighten: Torque - Rocker Arm Nut: 34 N·m (3.5 kgf·m, 25 ft·lb) Tie-Rod ...

Leather, Vinyl, and Rubber
If your motorcycle has leather accessories, special care must be taken. Use a leather cleaner/treatment to clean and care for leather accessories. Washing leather parts with detergent and water will damage them, shortening their life. Vinyl parts should be washed with the rest of themo ...

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 ...