Polaris Ranger RZR, RZR S, RZR 4 Owner's Manual
![Polaris Ranger RZR, RZR S, RZR 4 manual cover](/images/71db542e46790ddc82c1deeb/thumbs/thumb175x175.webp)
Regular maintenance should be performed every 50 hours of use or every six months, whichever comes first. Essential checks include engine oil, coolant levels, brakes, and tire pressure.
To improve fuel efficiency, ensure regular maintenance is performed, keep tires properly inflated, avoid carrying unnecessary weight, and maintain a steady throttle while driving.
If your RZR won't start, check the battery connections, ensure the fuel valve is open, verify that the kill switch is in the 'run' position, and inspect the fuses. If the problem persists, consult a professional.
To change the oil, warm up the engine, park on a level surface, remove the drain plug and allow the oil to drain completely, replace the oil filter, and refill with the recommended oil type and quantity.
Use a high-quality, ethylene glycol-based antifreeze/coolant specifically designed for aluminum engines, mixed 50/50 with distilled water.
Check for coolant leaks, ensure the radiator is clean and free of debris, verify the fan is operational, and inspect the thermostat. If the issue persists, consult a professional.
Common causes of rough idle include dirty air filters, fouled spark plugs, or clogged fuel injectors. Regular maintenance and cleaning can help prevent these issues.
Adjust the preload on the shocks by turning the adjuster rings. For a softer ride, decrease the preload by rotating the rings counterclockwise. Always refer to the owner’s manual for specific guidance.
Check the transmission fluid level and quality. Ensure the linkage is properly adjusted and lubricated. If the problem continues, inspect for worn or damaged shift forks or gears.
Regularly clean and replace air filters, ensure fuel is fresh and free of contaminants, and perform regular maintenance on the fuel injectors and spark plugs.