3
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
3.111
Bottom View:
• In both photos, callouts
q
show accumulated carbon / oil residue deposited on the components as the assembly is
removed from the cylinder. Callouts
w
show normal deposits that will not affect guillotine travel.
• Some technicians may find more or less deposits, but the net result is that these deposits have no effect on E-VES
operation. After removing the E-VES assembly from the cylinder, use a clean shop towel to simply wipe these
deposits away from the components, verify the cylinder slots are clean and that no foreign material has entered the
combustion chambers.
IMPORTANT
Never use harsh abrasives, wire brushes, or files to clean any type of Polaris exhaust valve. Doing so may scratch
the valve surfaces and create friction between the components.
ENGINE / COOLING / EXHAUST
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