Kawasaki Ninja Service Manual: Caliper Piston and Cylinder Damage

Rear Caliper Dust Boot and Friction Boot Damage

Check that the dust boot [A] and friction boot [B] are not cracked, worn, swollen, or otherwise damaged. If they show any damage, replace it. ...

Rear Caliper Holder Shaft Wear

The caliper body must slide smoothly on the caliper holder shafts [A]. If the body does not slide smoothly, one pad will wear more than the other, pad wear will increase, and constant drag on the d ...

Other materials:

Cylinder Head Warp Inspection
Clean the cylinder head. Lay a straightedge across the lower surface of the cylinder head at several positions. Use a thickness gauge [A] to measure the space between the straightedge [B] and the head. Cylinder Head Warp Standard: – – – Service Limit: 0.05 mm (0.0020 in.) ...

Piston Ring Groove Width Inspection
Measure the piston ring groove width. Use a vernier caliper at several points around the piston. Piston Ring Groove Width Standard: Top [A] 0.82 0.84 mm (0.0323 0.0331 in.) Second [B] 0.82 0.84 mm (0.0323 0.0331 in.) Service Limit: 0.92 mm (0.036 in.) Second 0.92 mm (0.036 in.) ...

Idle Speed Inspection
Start the engine and warm it up thoroughly. With the engine idling, turn the handlebar to both sides [A]. If handlebar movement changes the idle speed, the throttle cables may be improperly adjusted or incorrectly routed, or damaged. Be sure to correct any of these conditions before rid ...