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:

Transmission Assy Removal
Remove: Engine Sprocket (see Engine Sprocket Removal in the Final Drive chapter) Gear Position Switch (see Gear Position Switch Removal in the Electrical System chapter) Collar [A] O-ring [B] Remove: Clutch (see Clutch Removal in the Clutch chapter) Shift Shaft Assembly ...

System Components
1. FI ECU The FI ECU analyzes the motorcycle conditions based on the signals from the front/rear wheel rotation sensors and FI sensors (such as the crankshaft sensor and main throttle sensor), and controls engine power by reducing the number of ignition and retarding the ignition timing. The m ...

Seat Cover Removal
Remove: Rear Seat (see Rear Seat Removal) Remove the bolts [A]. Remove the upper seat cover backward [B] to clear the hook portions. Remove: Front Seat (see Front Seat Removal) Quick Rivets [A] Bolts [B] Seat Covers [C] ...