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9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
4. Remove the cylinder head
e
.
5. Remove and discard the cylinder head o-rings.
Always use new o-rings during assembly.
6. Inspect the cylinder head / combustion domes for any
damage. Measure cylinder head flatness. Replace
cylinder head if required.
CYLINDER HEAD INSPECTION
The engine cylinder head must be flat to properly seal.
Use a precision straight edge and a feeler gauge to
inspect cylinder head for warping.
MEASUREMENT
Cylinder Head Warp Limit:
0.006 in (.015 mm)
Replace cylinder head if warping exceeds specification.
ENGINE / COOLING / EXHAUST
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