Combustion Chamber Cleaning - Polaris RZR XP Turbo Service Manual

ENGINE / COOLING SYSTEM
1. Remove all carbon from valves with a soft wire wheel
or brush.
2. Check valve face for pitting or burnt spots.
3. Inspect the valve stem
pitting. To check for bent valve stems, mount valve in
a drill or use "V" blocks and a dial indicator.
4. Check the end of the valve stem
wear or damage.
5. Inspect split keeper groove for wear or flaring in the
keeper seat area.
The valves can be re-faced or end ground, if necessary.
They must be replaced if extensively worn, burnt, bent
or damaged.
6. Measure diameter of valve stem with a micrometer in
three places, then rotate 90° and measure again
(take six measurements
specifications.
MEASUREMENT
Valve Stem Diameter:
Intake: .2155 - .2161" (5.475 - 5.490 mm)
Exhaust: .2147 - .2153" (5.455 - 5.470 mm)
3.54
q
in various spots for wear or
w
for flaring, pitting,
NOTE
total). Compare
7. Measure valve guide inside diameter at the top,
middle and end of the guide using a small hole gauge
and a micrometer. Measure in two directions.
MEASUREMENT
.2165 - .2171" (5.500 - 5.515 mm)
8. Be sure to measure each guide and valve
combination individually.
The valve guides cannot be replaced.

COMBUSTION CHAMBER CLEANING

to
Wear eye protection during combustion chamber
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
Valve Guide I.D.:
NOTE
WARNING
cleaning.
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