Polaris Sportsman 400 H.O. Owner's Manual page 77

Oil and Filter Change
11. Place towels under the oil filter.
Using an oil filter wrench, turn
the filter counterclockwise to
remove it.
12. Clean the filter sealing area on
the engine.
13. Lubricate the filter o-ring.
Check to make sure the o-ring
is in good condition.
14. Install the new oil filter. After the filter contacts the engine surface,
turn it 1/2 turn by hand.
15. Remove the dipstick.
16. Add the recommended oil. See page 74.
17. Reinstall the dipstick.
18. Start the engine. Allow it to idle for two minutes.
19. Stop the engine.
20. Check for oil leaks.
21. Remove the dipstick and check the oil level. Add oil as needed.
Maintain the oil level in the safe range. Do not overfill.
22. Reinstall the dipstick.
23. Discard used oil and filter properly.
Safe Range
Add Oil
MAINTENANCE
Safe
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