Polaris xp 2013 eps User Manual

3.40
ENGINE / COOLING
9924096 - 2013 RANGER RZR XP 900 / RZR XP 4 900 Service Manual
© Copyright 2012 Polaris Sales Inc.
Renewing Valve Seats
1. Install pilot into valve guide.
2. Apply cutting oil to valve seat and cutter.
3. Place 46° cutter on the pilot and make a light cut.
4. Inspect the cut area of the seat:
* If the contact area is less than 75% of the circumference
of the seat, rotate the pilot 180
° and make another light cut.
* If the cutter now contacts the uncut portion of the seat,
check the pilot. Look for burrs, nicks, or runout. If the pilot
is bent it must be replaced.
* If the contact area of the cutter is in the same place, the
valve guide is distorted from improper installation.
* If the contact area of the initial cut is greater than 75%,
continue to cut the seat until all pits are removed and a new
seat surface is evident.
NOTE: Remove only the amount of material
necessary to repair the seat surface.
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 (A).
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 (B) 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 (A).
Intake Seat Cutter Diameter: 1.567 in. (39.80 mm)
A
B
A
Proper Seat Contact
on Valve Face
INTAKE
Seat Width
.039” (1.00 mm)
60°
45°
30°

Polaris xp 2013 eps Specifications

General

Brand	Polaris
Model	xp 2013 eps
Category	Utility Vehicle
Language	English