2006 Arctic Cat DVX 400 Service Manual, Page 51Get this manual
Grinding Valve Seats NOTE: If the valve seat is beyond servicing, the cylinder head must be replaced
2Lubricate each valve stem with light oil; then apply small amount of valve lapping compound to the entire seating face of each valve3Attach the suction cup of valve lapping tool to the head of the valve4Rotate the valve until the valve and seat are evenly polished5Clean all compound residue from the valve and seatInstalling Valves
1Insert an exhaust valve seat pilot shaft into an exhaust valve guideSlide an exhaust valve seat grinding tool onto the pilot shaft; then using light pressure on driver handle and deep socket, grind the exhaust valve seat until within specificationsNOTE: Repeat procedure on the remaining exhaust valve
1Apply grease to the inside surface of the valve seals; then place lower spring seat and valve guide seal over each valve guide
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 pressure on driver handle and deep socket, grind the intake valve seat until within specificationsNOTE: Repeat procedure on the remaining intake valve