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9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
3.
Inspect the valve for debris. Blow gently through the
valve to check for clogging. Replace a damaged or
clogged valve.
NOTE:
In-line breather filter service life is
extended when the foam air box pre-filter is in
place and maintained properly. Never operate the
engine without the pre-filter.
4.
Check the hoses for cracks, deterioration, abrasion,
or leaks. Replace as needed.
CAUTION
Make sure lines are not kinked or pinched.
5.
Reinstall the valve and hose clamps.
CAUTION
Operation of your vehicle without a breather valve can
cause engine damage. Always reinstall the breather
valve after removing it for service.
6.
Install the left side panel
Crankcase Separation
NOTE: Before the crankcase can be separated, be
sure the entire top end, water pump stator, flywheel
and oil pump assembly are removed from the engine
as outlined in this chapter.
1.
Remove the engine from the engine stand and lay it
on a table so the magneto side is facing upward.
WARNING
Support the engine case with a non marring material to
prevent damaging the PTO side of the crank shaft and
any mating surfaces.
Ensure the crank case is stable before working on it.
2.
Remove the oil pan at this time if it has not already
been removed.
3.
Remove the oil filter and the fasteners(1) that secure
oil filter adapter (2) to the crankcase. Discard O-rings
and through clean the adaptor for reassembly.
4.
Remove and discard the flange bolts(1) fastening the
intermediate (mag) cover evenly in a criss-cross
pattern.
5.
Remove and discard the flange bolts(3) fastening the
magneto side crankcase evenly in a criss-cross
pattern.
6.
Separate crankcase by tapping with a soft faced
hammer in reinforced areas and lift MAG crankcase
off PTO case.
ENGINE
