Page 303 - Manual Oficina Polaris Sportsman 570 2014 a 2016

ENGINE / COOLING SYSTEM

2. Remove the hose clamps from the valve and pull the 3. Remove the oil filter and the fasteners q that secure
valve out of the hoses. oil filter adapter w to the crankcase. Discard O-rings
and through clean the adaptor for reassembly.
3. Inspect the valve for debris. Blow gently through the
valve to check for clogging. Replace a damaged or
clogged valve.
NOTE
ETX vehicles use an 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. 3
4. Check the hoses for cracks, deterioration, abrasion,
or leaks. Replace as needed.
CAUTION
Make sure lines are not kinked or pinched.
4. Remove and discard the flange bolts q fastening the
5. Reinstall the valve and hose clamps. intermediate (mag) cover evenly in a criss-cross
pattern.
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. 5. Remove and discard the flange bolts e fastening the
magneto side crankcase evenly in a criss-cross
pattern.
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.

6. Separate crankcase by tapping with a soft faced
hammer in reinforced areas and lift MAG crankcase
off PTO case.

9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual 3.181
© Copyright Polaris Industries Inc.