Kawasaki Ninja Service Manual: Valve Seat Inspection

Kawasaki Ninja Service Manual / Engine Top End / Valves / Valve Seat Inspection

Remove the valve (see Valve Removal).
Check the valve seating surface [A] between the valve [B] and valve seat [C].

Measure the outside diameter [D] of the seating pattern on the valve seat.

If the outside diameter is too large or too small, repair the seat (see Valve Seat Repair).

Valve Seating Surface Outside Diameter Standard:

Exhaust 23.9 24.1 mm (0.941
0.949 in.)

Intake 30.4 30.6 mm (1.197
1.205 in.)

Valve Seat Inspection

Measure the seat width [E] of the portion where there is no build-up carbon (white portion) of the valve seat with a vernier caliper.

Good [F]

If the width is too wide [G], too narrow [H] or uneven [J], repair the seat (see Valve Seat Repair).

Valve Seating Surface Width Standard:

Exhaust 0.8 1.2 mm (0.03
0.05 in.)

Intake 0.5 1.0 mm (0.02
0.04 in.)

Valve-to-Guide Clearance Measurement (Wobble Method)

If a small bore gauge is not available, inspect the valve guide wear by measuring the valve to valve guide clearance with the wobble method as indicated below. Insert a new valve [A] into the gu ...

Valve Seat Repair

Repair the valve seat with the valve seat cutters [A]. Special Tools - Valve Seat Cutter Holder Bar [B]: 57001 -1128 Valve Seat Cutter Holder, 4.5 [C]: 57001 -1330 [For Exhaust Valve Seat] V ...

Other materials:

Intake Air Pressure Sensor #1 Output Voltage Inspection
Measure the output voltage at the intake air pressure sensor #1 in the same way as input voltage inspection, note the following. Disconnect the intake air pressure sensor #1 connector and connect the measuring adapter [A] between these connectors. [B] Main Harness [C] Intake Air Pressu ...

Front Wheel Rotation Sensor Wiring Inspection (Service Code b 43)
Disconnect the front wheel rotation sensor lead connector [A] (see Front Wheel Rotation Sensor Removal in the Brakes chapter). Disconnect the KIBS hydraulic unit lead connector (see KIBS Hydraulic Unit Removal in the Brakes chapter). Check the wiring continuity of the W lead and ...

Exploded View
5. Other than US, CA, and CAL Models 6. The big diameter side of the dampers faces upward. G: Apply grease. L: Apply a non-permanent locking agent. R: Replacement Parts S: Follow the specified tightening sequence. SS: Apply silicone sealant. 11. Immobilizer Ampli ...