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3.39

9925724 R01 - 2014-2015 RZR XP 1000 / RZR XP4 1000 Service Manual

Valve Inspection

1. Remove all carbon from valves with a soft wire wheel

or brush.

2. Check valve face for runout, pitting, and burnt spots.

To check for bent valve stems, mount valve in a drill

or use “V” blocks and a dial indicator.

3. Check the end of the valve stem for flaring, pitting,

wear or damage.

4. 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.

5. Measure diameter of valve stem with a micrometer in

three places, then rotate 90° and measure again

(take six measurements total). Compare to

specifications.

Valve Stem Diameter:

Intake:0.2155 - 0.2161" (5.475 - 5.490 mm)

Exhaust: 0.2147 - 0.2153" (5.455 - 5.470 mm)

6. 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.

Valve Guide I.D.:

0.2165 - 0.2171" (5.500 - 5.515 mm)

ENGINE / COOLING SYSTEM

Polaris RZR XP4 1000 User Manual

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