2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 214Get this manual
Valve SeatGuide Servicing Flovv
2Insert an intake valve seat pilot shaft into one of the intake valve guidesSlide the intake valve seat grinding tool onto the pilot shaft; then using light on '!- driver handle and deep socket, gnnd the mtake valve seat until within specifications NOTE: Repeat procedure on the remaining intake valve
Purpose:
Make seating area smooth and round
Purpose:
45" Cutter
Increase outside
diameter of seat areatospeGification
Tool: Purpose:
1SCutter
Reduce outside diamelerofseal area to specification
MeasureSealWidlh
Tool: Purpose:
45 Cutter Increase width of seat area beyond specification to increase outside diameter