1987-2004 Kawasaki Mojave KSF250 Service Manual, Page 66Get this manual
ENGINE TOP END 419 Valve Seating Pattern Seat Cutter Operating Care: 1This valve seat cutter is developed to grind the valve seat for repairTherefore the cutter must not be used for other purposes than seat repair2Do not drop or shock the valve seat cutter, or the diamond particles may fall off3Do not fail to apply engine oil to the valve seat cutter before grinding the seat surfaceAlso wash off ground particles sticking to the cutter with washing oil
Too Wide
not use wire brush to remove the metal particles from the cutterIt will take off the diamond particles
4Setting the valve seat cutter holder in position, operate the cutter in one handDo not apply too much force to the diamond portion
Too Narrow
oPrior to grinding, apply engine oil to the cutter and during the operation; wash off any ground particles sticking to the cutter with washing oil-Measure the outside diameter of the seating pattern on the valve seatIf the outside diameter of the valve seating pattern is too large or too small, repair the seat (see Valve Seat Repair)