Kawasaki STX-15F Seat Cutter Operation Care, Marks Stamped on the Cutter, Operating Procedures

ENGINE TOP END 6-27

Valves

Seat Cutter Operation Care

1.This valve seat cutter is developed to grind the valve for repair. Therefore the cutter must not be used for other purposes than seat repair.

2.Do not drop or shock the valve seat cutter, or the dia- mond particles may fall off.

3.Do not fail to apply engine oil to the valve seat cutter before grinding the seat surface. Also wash off ground particles sticking to the cutter with washing oil.

NOTE

○Do not use a wire brush to remove the metal particles from the cutter. It will take off the diamond particles.

4.Setting the valve seat cutter holder in position, operate the cutter in one hand. Do not apply too much force to the diamond portion.

NOTE

○Prior to grinding, apply engine oil to the cutter and dur- ing the operation, wash off any ground particles sticking to the cutter with washing oil.

5.After use, wash it with washing oil and apply thin layer of engine oil before storing.

Marks Stamped on the Cutter

The marks stamped on the back of the cutter [A] represent

the following.
60°		Cutter angle [B]
37.5		Outer diameter of cutter [C]
	.......................

Operating Procedures

•Clean the seat area carefully.

•Coat the seat with machinist’s dye.

•Fit a 45° cutter into the holder and slide it into the valve guide.

•Press down lightly on the handle and turn it right or left. Grind the seating surface only until it is smooth.

CAUTION

Do not grind the seat too much. Overgrinding will reduce valve clearance by sinking the valve into the head. If the valve sinks too far into the head, it will be impossible to adjust the clearance, and the cylin- der head must be replaced.