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:

Sidestand Switch Operation Inspection
Raise the rear wheel off the ground with the stand (see Rear Wheel Removal in the Wheels/Tires chapter). Inspect the sidestand switch [A] operation accordance to below table. Sidestand Switch Operation If the sidestand switch operation does not work, inspect or replace the foll ...

Crankshaft Sensor Peak Voltage Inspection
Refer to the Crankshaft Sensor Peak Voltage Inspection in the Electrical System chapter. If the reading is within the standard, remove the ECU and check the wiring for continuity between harness connectors. Special Tool - Hand Tester: 57001-1394 Disconnect the ECU and sensor connector ...

Warning Indicator Light (LED)
Light (LED) Inspection The warning indicator light (LED) [A] is used for the FI indicator, immobilizer indicator (immobilizer equipped models), water temperature warning indicator and oil pressure warning indicator. In this model, the warning indicator light (LED) (FI/immobilizer) goes ...