Combustion Chamber Cleaning - Polaris RZR 900 2015 Service Manual

5. 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)
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.
MEASUREMENT
Valve Guide I.D.:
.2165 - .2171" (5.500 - 5.515 mm)
7. Be sure to measure each guide and valve
combination individually.
NOTE
The valve guides cannot be replaced.
9926814 R08 -
Manual
© Copyright Polaris Industries Inc.

COMBUSTION CHAMBER CLEANING

total). Compare to
1. Clean
Carbon Clean Fuel Treatment (2871326) can be used
abrasive cleaners to clean the cylinder head. Damage
2. Visually inspect cylinder head gasket surface and
2015-2016 RZR 900
ENGINE / COOLING SYSTEM
WARNING
Wear eye protection during combustion chamber
cleaning.
all accumulated carbon
combustion chambers and valve seat area
NOTE
to help remove carbon deposits.
Do not use a metal scraper, a coarse wire brush or
may result.
combustion chamber for cracks or damage. Pay
close attention to areas around spark plug and valve
seats.
2016 RZR S 1000 Service
deposits from
q
.
3
3.101