Kawasaki Ninja Service Manual: Piston Ring, Piston Ring Groove Wear Inspection

Kawasaki Ninja Service Manual / Crankshaft/Transmission / Pistons / 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 piston rings in their grooves, make several measurements with a thickness gauge [A] to determine piston ring/groove clearance.

Piston Ring, Piston Ring Groove Wear Inspection

Piston Ring/Groove Clearance Standard:

Top 0.03 0.07 mm (0.0012
0.0028 in.)

Second 0.03 0.06 mm (0.0012
0.0024 in.)

Service Limit:

Top 0.17 mm (0.0067 in.)

Second 0.16 mm (0.0063 in.)

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 ...

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] 0.8 ...

Other materials:

Idle Speed Control Valve Actuator Removal
NOTICE Never drop the idle speed control valve actuator especially on a hard surface. Such a shock to the actuator can damage it. Remove: Throttle Body Assy (see Throttle Body Assy Removal in the Fuel System (DFI) chapter) Idle Speed Control Valve Actuator Retainer Screws [A] Idle Spe ...

Air Intake Duct Assembly (Other than US, CA and CAL Models)
Install the seals [A] as shown in the figure. Fit the projections [A] of the air intake valve to the hole [B] of the air intake ducts. Tighten: Torque - Air Intake Duct Assembly Screws: 1.5 N·m (0.15 kgf·m, 13 in·lb) Hang the shaft [A] to the air intake valve securely ...

Fuel Injector Audible Inspection
NOTE Be sure the battery is fully charged. The secondary fuel injectors are operating with following conditions. 1. The engine speed is more than 6 000 r/min (rpm). 2. The throttle opening is more than 12°. Remove: Fuel Tank (see Fuel Tank Removal) Primary Fuel Hose (see Fuel ...