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9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
Crankcase Breather Valve / Hose
The breather valve is on the hose that runs between the
engine and air box. Be sure breather line is routed prop-
erly and secured in place.
1.
Remove the left side panel
2.
Remove the hose clamps from the valve and pull the
valve out of the hoses.
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
MAINTENANCE
