2004 Polaris Sportsman 600/700 Service Manual, Page 72Get this manual
VALVE SEAT RECONDITIONING CONT'D If the contact area of the cutter is in the same place, the valve guide is distorted from improper installationIf the contact area of the initial cut is grealerthan 75, continue to cut the seat unlil all pits are removed and new seal surface is evidentNOTE: Remove only the amount of material If the seat is too narrow, widen using the cutter and re-check contact point on the valve face and seat width after each cut
NOTE: When using an interference angle, the seat contact point on the valve will be very narrow, and is normal conditionLook for an even and continuous contact point all the way around the valve face (B)
necessary to repair the seat surface5To check the contact area of the seat on the valve
face, apply thin coating of Prussian Bluepaste to the valve seatIf using an interference angle
(46") apply black permanent marker to the entire
valve face (AI