Polaris RANGER 1000 2020, Service Manual, Page: 201 / 610

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9850045 R01 - 2020-2021 RANGER 1000 Service Manual
© Copyright Polaris Inc.
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CYLINDER HEAD INSPECTION
Thoroughly clean cylinder head surface to remove all
traces of gasket material and carbon.
CAUTION
Use care not to damage gasket sealing surface. All
gasket surfaces must be clean, dry and free of any oil
or grease upon assembly. Clean sealing surfaces with
rubbing alcohol or electrical contact cleaner. Do not
touch sealing surfaces of the new head gasket.
Lay a straight edge across the surface of the cylinder
head at several different points and measure warp by
inserting a feeler gauge between the straight edge and
the cylinder head surface. If warp exceeds the service
limit, replace the cylinder head.
MEASUREMENT
Cylinder Head Warp Limit:
0.0039″ (0.1 mm)
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
.
NOTICE
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 areas around spark plug and valve
seats.
ENGINE / COOLING / EXHAUST