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9924880 Rev 2- 1/10/2014 - 2013 / 2014 RANGER XP 900 - 2014 RANGER XP 900 / CREW 900 Service Manual
© Copyright Polaris Sales Inc.
5. To check contact area of the seat on the valve face,
apply a thin coating of Prussian Blue paste to the
valve seat. If using an interference angle (46°) apply
black permanent marker to the entire valve face
q
.
6. Insert valve into guide and tap valve lightly into place
a few times.
7. Remove valve and check where the Prussian Blue
indicates seat contact on the valve face. The valve
seat should contact the middle of the valve face or
slightly above, and must be the proper width.
* If the indicated seat contact is at the top edge of the
valve face and contacts the margin area
e
it is too
high on the valve face. Use the 30° cutter to lower
the valve seat.
* If too low, use the 60° cutter to raise the seat. When
contact area is centered on the valve face, measure
seat width.
* If the seat is too wide or uneven, use both top and
bottom cutters to narrow the seat.
* If the seat is too narrow, widen using the 45° 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 a normal
condition. Look for an even and continuous contact
point all the way around the valve face
w
.
ENGINE
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