Polaris RZR XP Turbo Service Manual page 148

ENGINE / COOLING SYSTEM
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
Valves with 100 hours or more will have noticeable
markings on the valve face. This is normal and should
not cause valve leakage. Both valves shown are
acceptable and would not require replacement.
6. Insert valve into guide and tap valve lightly into place
a few times.
3.56
NOTE
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
q
. slightly above, and must be the proper width.
Intake Seat Cutter Diameter: 1.457" (37.00 mm)
Exhaust Seat Cutter Diameter: 1.260" (32.00 mm)
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
© Copyright Polaris Industries Inc.