Polaris RZR 900, RZR 4 900 Owner's Manual
![Polaris RZR 900, RZR 4 900 manual cover](/images/ab0eb92c114decf64f74b0fa/thumbs/thumb175x175.webp)
To break in your Polaris RZR 900 engine, avoid full-throttle starts and high-speed running for the first 10 hours. Vary engine speed and avoid prolonged idle periods. Regularly check the oil and coolant levels during this period.
Polaris recommends changing the oil and oil filter on the RZR 4 900 every 50 hours, 6 months, or 500 miles, whichever comes first. Always use Polaris PS-4 Extreme Duty 10W-50 oil.
If your RZR 900 won't start, check the battery connections and ensure they are clean and tight. Verify that the battery is fully charged. Inspect the fuel system for clogs and ensure the fuel pump is operational.
Regular maintenance for the RZR 4 900 includes checking and replacing the air filter, inspecting the drive belt, checking tire pressure and condition, and lubricating suspension components. Regularly inspect brake pads and fluid levels.
To adjust the suspension on your RZR 900, use the shock preload adjustment collars to change ride height and stiffness. For rocky terrain, soften the suspension for more flex. For smooth trails, stiffen it for better handling.
If your RZR 4 900 overheats, stop the vehicle and let it cool down. Check coolant levels and top off if necessary. Inspect the radiator for obstructions and clean it if needed. Ensure the cooling fan is operational.
To replace the drive belt on a Polaris RZR 900, remove the clutch cover using the appropriate tools. Slide the old belt off the clutches, then install the new belt by sliding it over the primary clutch first. Reinstall the clutch cover.
Unusual noises in your RZR 4 900 could be due to loose components, worn drive belts, or low lubricant levels in the transmission. Inspect and tighten all bolts and fittings, check the belt for wear, and ensure proper lubrication.
For off-season storage, clean your RZR 900 thoroughly and apply a protective wax. Fill the gas tank and add a fuel stabilizer. Disconnect the battery and store it in a cool, dry place. Cover the vehicle to protect it from dust and moisture.
To enhance the performance of your RZR 4 900, consider upgrading the exhaust system, installing a high-performance air filter, and using a tuning chip to optimize engine settings. Ensure all modifications comply with local regulations.