Kawasaki Ninja Service Manual: Piston Ring Thickness Inspection

Kawasaki Ninja Service Manual / Crankshaft/Transmission / Pistons / Piston Ring Thickness Inspection

Use the micrometer to measure at several points around the ring.

Piston Ring Thickness Standard:

Top [A] 0.77 0.79 mm (0.0303
0.0311 in.)


Second [B] 0.78 0.79 mm
(0.0307 0.0311 in.)


Service Limit:

Top 0.70 mm (0.0276 in.)

Second 0.71 mm (0.0280 in.)

Piston Ring Thickness Inspection


If any of the measurements is less than the service limit on either of the rings, replace all the rings.

NOTE

When using new rings in a used piston, check for uneven groove wear. The rings should fit perfectly parallel to the groove sides. If not, replace the piston.

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 ...

Piston Ring End Gap Inspection
Place the piston ring [A] inside the cylinder (upper crankcase), using the piston to locate the ring squarely in place. Set it close to the bottom of the cylinder, where cylinder wear is low. ...

Other materials:

ESD Actuator Input Voltage Inspection
NOTE Be sure the battery is fully charged. Turn the ignition switch to OFF. Disconnect the ESD actuator connector and connect a suitable measuring leads [A] between these connectors as shown. Main Harness [B] ESD Actuator [C] Connect the peak voltage adapter [D] and a digital ...

Fuel Pump Relay Inspection
Refer to the Relay Circuit Inspection in the Electrical System chapter. If the fuel pump relay is normal, check the wiring to the fuel pump relay (see Fuel Pump Relay Circuit). Special Tool - Hand Tester: 57001-1394 If the wiring is good, check the ECU for its ground and power supply (se ...

Oil Pump Installation
Install the outer rotor [A] into the crankcase. Assemble: Oil (Water) Pump Shaft [B] Pin [C] Inner Rotor [D] To prevent dropping, apply grease to the pin. Install the inner rotor assembly into the crankcase. Fit the slot [E] onto the projection [F]. Replace the O-ring [A ...