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:

Shift Fork Guide Pin/Drum Groove Wear Inspection
Measure the diameter of each shift fork guide pin [A], and measure the width [B] of each shift drum groove. If the guide pin on any shift fork is less than the service limit, the fork must be replaced. Shift Fork Guide Pin Diameter Standard: 6.9 7.0 mm (0.272 0.276 in.) Service Limit: ...

KIBS Hydraulic Unit Installation
NOTICE Brake fluid quickly ruins painted plastic surfaces; any spilled fluid should be completely washed away immediately. Install the KIBS hydraulic unit together with the bracket. Before installing the brake pipe, check to see that there is no damage on the threads of the brake pipe joi ...

Specifications
Whenever you see the symbols shown below, heed their instructions! Always follow safe operating and maintenance practices. DANGER DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNINGWARNING indicates a hazardous situation whi ...