Content Source: 2021 RZR S4 1000 Owner’s Manual (9931549 R02) > Maintenance Chapter

IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle.Always follow the warnings and instructions in Owner's Manual.

Click the CONTENTS link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com

Engine Oil

Oil Recommendations

WARNING
Vehicle operation with insufficient, deteriorated, or contaminated engine oil will cause accelerated wear and may result in engine seizure, accident, and injury. Always perform the maintenance procedures as outlined in the Periodic Maintenance Chart.

Ambient Temperature Range

Recommended Oil

-35 °F to +100 °F

(-37 °C) to (+38 °C)

PS-4 5W-50 4-Cycle Oil

0 °F to 120 °F

(-18 °C) to (+49 °C)

PS-4 Extreme Duty

10W-50 4-Cycle Oil
Oil may need to be changed more frequently if POLARIS oil is not used. Do not use automotive oil. Follow the manufacturer's recommendations for ambient temperature operation. Part numbers can be found in the POLARIS Products chapter.
NOTICE
Mixing brands or using a non-recommended oil may cause serious engine damage. Always use the recommended oil. Never substitute or mix oil brands.
Always check and change the oil at the intervals outlined in the Periodic Maintenance Chart. Always use the recommended engine oil.

Oil Check

Always check the oil when the engine is cold. If the engine is hot when the oil is checked, the level will appear to be overfull.
Access the oil filter and oil check dipstick through the engine access panel located behind the seats.
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  1. Position the vehicle on a level surface.
  2. Place the transmission in PARK.
    NOTE
    Always check the oil when the engine is cold.
  3. Remove the seats and remove the engine access panel.
  4. Remove the dipstick . Wipe it dry with a clean cloth.
  5. Reinstall the dipstick completely. Remove the dipstick and check the oil level.
  6. Remove the oil fill cap to add the recommended oil as needed. Maintain the oil level between the minimum and maximum marks on the dipstick. Do not overfill.
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  7. Reinstall the fill cap. Reinstall the dipstick.

Oil and Filter Change

Always change the oil and filter at the intervals outlined in the Periodic Maintenance Chart section. Always change the oil filter whenever changing oil.
Access the oil check dipstick and oil filter through the engine access panel located behind the seats.
The crankcase drain plug is located on the bottom of the crankcase. Access the drain plug through the access hole under the crankcase.
  1. Position the vehicle on a level surface. Place the transmission in PARK.
  2. Clean the area around the crankcase drain plug.
    caution
    Hot oil can cause burns to skin. Do not allow hot oil to contact skin.
  3. Place a drain pan under the engine crankcase and remove the drain plug. Allow the oil to drain completely.
  4. Remove the seats and remove the engine access panel.
  5. Using an oil filter wrench, turn the filter counterclockwise to remove it.
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  6. Using a clean dry cloth, clean the filter sealing surface on the crankcase.
  7. Lubricate the o-ring on the new filter with a film of fresh engine oil. Check to make sure the o-ring is in good condition.
  8. Install the new filter and turn by hand until the filter gasket contacts the sealing surface, then turn an additional 3/4 turn.
  9. Reinstall the crankcase drain plug. Torque to 12 ft-lbs (16 N·m).
  10. Remove the oil fill cap and add 2.5 qt (2.4 L) of recommended oil (listed in the Oil Recommendations section). Reinstall the fill cap.
  11. Start the engine and check for leaks.
  12. Stop the engine and wait 15 seconds before removing the dipstick.
  13. Remove the dipstick. Wipe it dry with a clean cloth.
  14. Reinstall the dipstick completely. Remove the dipstick and check the oil level.
  15. Add oil as necessary to bring the level to the upper mark on the dipstick. Do not overfill.
  16. Reinstall the dipstick.
  17. Reinstall the oil fill cap.
  18. Dispose of used filter and oil properly.

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