How to Sportsman 500 rear differential oil change?

To change the rear differential oil on a Polaris Sportsman 500, first ensure the ATV is on a level surface and securely supported. Remove the fill plug and drain plug from the differential, allowing the old oil to fully drain out. After draining, replace the drain plug and refill the differential with the appropriate oil through the fill hole until it reaches the specified level. Finally, replace the fill plug and check for any leaks.