How to Change the Oil in a Polaris RZR 900S

When it comes to maintenance tasks, perhaps none is more critical to the health of an engine than an oil change. For a Polaris UTV, an oil change is recommended after every 50 hours of use or every 1,000 miles. 

Watch the video above and follow the steps below to do an engine oil change on a Polaris RZR 900S. 

Tools and Supplies – Polaris RZR 900 Oil Change

Buy Polaris side by side PS-4 oil change kit

Buy an oil filter wrench

NOTE: You can buy the oil and oil filter separately, but it’s cheaper to buy the Polaris RZR oil change kit, which includes both the filter and the oil.

Polaris RZR 900 S Oil Change Steps

Step 1. Start the engine and let it idle for a few minutes to warm up the oil, which makes it easier to drain.

Step 2. Remove both seats to reach the access panel to the oil filter and dipstick. On both the passenger and driver seats, there’s a lever that releases the seat. Reach between the seat cushion and seat back, then pull up on the lever to release the seat and lift it out. 

Polaris RZR 900 oil change service

Polaris RZR 900 engine oil change service

Step 3. Remove the access panel by pulling down on it a little and then pulling it out. 

Polaris RZR 900 UTV oil change

Step 4. Pull the dipstick out just a little to make it easier to drain the engine oil. 

Polaris RZR 900 dipstick

Step 5. Find the oblong opening in the skid plate underneath the unit to locate the drain bolt, which is a 6mm Allen toward the front of this opening. Put a drain pan underneath the drain bolt, then remove the drain bolt. 

Polaris RZR oil change drain bolt

NOTE: Be careful not to lose the crush washer on the drain bolt, which can stick to the unit or fall into the drain pan. 

Step 6. Replace the drain bolt along with its crush washer after the oil has drained. Torque the drain bolt to 12 foot-pounds.

Polaris RZR oil change drain bolt replacement

Step 7. Stuff shop towels or rags under the oil filter to catch the oil in the filter and prevent it from leaking onto the engine. 

Polaris side-by-side oil change

Step 8. Remove the oil filter with an oil filter wrench.  

Polaris RZR 900 S oil change service

Step 9. Smear a little oil on the seal at the top of the new oil filter, then hand-tighten the filter into place. Next, use the oil filter wrench to tighten it another ¾ turn. 

Polaris UTV oil filter change

Polaris RZR side-by-side oil filter install

Step 10. Remove the oil fill cap, which is on the valve cover, then fill the engine with 2.5 quarts of fresh oil. 

Polaris RZR 900 oil change access panel

Polaris RZR engine oil change filler cap

NOTE: The Polaris oil change kit includes the 2.5 quarts of engine oil, so you should have exactly what you need. 

Polaris RZR UTV engine oil service

Step 12. Replace the cap and the access panel, then push the dipstick back into place.

Step 13. Start up the unit and let it run for a minute or two. Next, check the oil level by removing the dipstick, wiping it off, then pushing it all the way in and removing it again.

Polaris RZR 900 UTV motor oil change

Step 14. Top off the oil if necessary, then push the dipstick back in. 

Polaris side-by-side motor oil change

NOTE: The dipstick handle has a lever to lock it into place.

Step 15. Replace the access cover and the seats and you’re done. 

Polaris RZR 900 UTV motor oil change service

NOTE: When you replace the seats, hook the front ends first, then push them back into place. 

Ready to change out the gearcase and transmission fluids on your Polaris side-by-side? Watch the video below to see how to do a transmission and diff fluid service on a Polaris RZR 900S