9926813 R04 - 2013-2016
RZR
570 Service Manual
© Copyright Polaris Industries Inc.
3.45
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: 0.2155" - 0.2161" (5.475 - 5.490 mm)
Exhaust: 0.2147" - 0.2153" (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.:
0.2165" - 0.2171" (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.
1.
Clean
all
accumulated
carbon
deposits
from
combustion chambers and valve seat area
q
.
NOTE
Carbon Clean Fuel Treatment (2871326) can be used
to help remove carbon deposits.
Do not use a metal scraper, a coarse wire brush or
abrasive cleaners to clean the cylinder head. Damage
may result.
2.
Visually inspect cylinder head gasket surface and
combustion chamber for cracks or damage. Pay
close attention to the areas around spark plug and
valve seats.
