2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 39Get this manual
MAINTENANCE Air Box Sediment Tube
Periodically check the air box drain tube located toward the rear of the machineDrain whenever deposits are visible in the clear tube1Remove drain plug from end of sediment tube2Drain tube3Reinstall drain plug
Breather Hose
1Be sure breather line is routed properly and secured in placeCAUTION: Make sure lines are not kinked or pinchedNOTE: In-line breather filter service life is extended when the foam air box pre-filter is in place and maintained properlyNever operate the engine without the pre-filter
Recoil Housing
Sediment Tube Drain Plug Recoil Drain NOTE: The sediment tube will require more frequent service if the vehicle is operated in wet conditions or at high throttle openings for extended periods Drain the housing moistureIf Equipped) periodically to remove