How to Change Polaris Sportsman Oil & Air Filter

Changing the oil and air filter on a Polaris ATV is pretty straightforward “do it yourself” maintenance. The Polaris oil change kit for the Sportsman includes 2 quarts of oil and a replacement oil filter. 

Since the oil and air filter should be changed at about the same time, we highly recommend doing both now. Watch the video above and follow the steps below to do a Polaris Sportsman ATV oil and air filter change.   

Tools and Parts - Polaris Sportsman 850 Oil Change 


Polaris PS-4 oil change kit

Polaris ATV air filter


Draining the Oil and Replacing the Oil Filter

Step 1. Start the engine, and let it idle for 2-3 minutes to allow the oil to warm up. This makes draining the oil out easier. 

Step 2. Use a 6mm wrench to remove the drain plug.

Polaris Sportsman 850 oil drain plug

Step 3. Use an oil filter wrench while the oil is draining to pull out the old oil filter.

Polaris Sportsman 850 oil filter

Step 4. Replace the drain plug once the oil has drained, making sure the bolt’s crush washer is in place.

Step 5. Put a dash of oil around the outer seal of the new oil filter, and screw it back into place.

Step 6. Unscrew the dipstick cap, and open 2 quarts of Polaris motor oil. 

Polaris Sportsman ATV oil change

NOTE: The Polaris oil filter kit comes standard with 2 quarts of oil. The oil capacity for a Polaris Sportsman ATV is 3.6 quarts, but only 2 quarts are needed for this service.

Step 7. Pour 1 quart of oil at a time into the opening where the dipstick was, then secure the dipstick back into place, start up the engine and let it idle for a couple of minutes.

Step 8. Turn off the engine, and let the new oil sit for a minute or two.

Step 9. Unscrew the dipstick, and wipe it clean before screwing it back into place. Next, remove the dipstick once more to check that the oil level is in the middle of the fill line indicator.

Polaris Sportsman 850 oil change

How to Replace a Polaris Sportsman Air Filter

Step 1. Remove the seat by grabbing the back of the it and pulling hard to release it.

Polaris Sportsman 850 air filter change

Step 2. Remove the air vent from the end of the air filter, then unscrew the two bolts on the air box cover and pull the cover away from the ATV.

Polaris Sportsman ATV air filter change

Step 3. Remove the air filter unit, including its pre-filter cleaner sleeve.

Step 4. Pull the pre-filter sleeve off the air filter, then handwash the sleeve in soap and water before rinsing it clean. After washing it, set the pre filter out to dry.

Polaris Sportsman ATV air filter cleaning

Step 6. Pull the dry pre-filter over the new air filter, making sure there aren’t any rips in the sleeve.

Polaris Sportsman ATV air filter sleeve

Step 8. Grease the front lip of the new air filter, then seat the air filter at the front of the airbox.

Polaris Sportsman ATV air filter sleeve install

Polaris Sportsman air filter installation

Step 9. Secure the airbox cover by hand-tightening the two screws, then reconnect the air vent hose into place.

Step 10. Pop the seat back on and you’re done. 



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