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3.54

9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual

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

in various spots for wear or

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

for flaring, pitting,

wear or damage.

5. Inspect split keeper groove for wear or flaring in the

keeper seat area.

NOTE

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 total). Compare to

specifications.

MEASUREMENT

Valve Stem Diameter:

Intake: .2155 - .2161" (5.475 - 5.490 mm)

Exhaust: .2147 - .2153" (5.455 - 5.470 mm)

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

Valve Guide I.D.:

.2165 - .2171" (5.500 - 5.515 mm)

8. Be sure to measure each guide and valve

combination individually.

NOTE

The valve guides cannot be replaced.

COMBUSTION CHAMBER CLEANING

WARNING

Wear eye protection during combustion chamber

cleaning.

ENGINE / COOLING SYSTEM

Polaris RZR XP Turbo User Manual

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