Polaris Ranger 400 Midsize Owner's Manual
![Polaris Ranger 400 Midsize manual cover](/images/a08de8c6c343d766b7ea60e0/thumbs/thumb175x175.webp)
To perform an oil change, first warm up the engine. Then, remove the drain plug and allow the oil to drain completely. Replace the oil filter, reinstall the drain plug, and refill with the recommended oil type and quantity.
Check the battery connections for corrosion or loose wires. Ensure the fuel tank is full and the fuel is fresh. Verify that the kill switch is in the 'run' position and inspect the fuses.
Start by checking for blown fuses and inspecting all wire connections for signs of wear or damage. A multimeter can be used to test the voltage output from the battery and alternator.
Regular maintenance includes changing the oil every 50 hours, checking the air filter every 25 hours, and inspecting the brakes and suspension every 100 hours. Refer to the owner’s manual for detailed guidelines.
To adjust the suspension, use the preload adjuster on the shocks. Turn the adjuster clockwise to increase preload for a stiffer ride, and counterclockwise for a softer ride. Ensure both sides are adjusted equally.
The recommended tire pressure for the Polaris Ranger 400 Midsize is typically 12 PSI for both front and rear tires. Always check the sidewall of the tire or the owner's manual for specific recommendations.
Regular maintenance, such as keeping the air filter clean and ensuring tires are properly inflated, can improve fuel efficiency. Avoiding excessive idling and maintaining a moderate speed can also help.
Check the coolant level and ensure the radiator is not blocked by debris. Inspect the fan operation and look for any leaks in the cooling system. It may also be necessary to flush the radiator.
Remove the clutch cover by loosening the bolts. Slide the belt off the drive clutch and over the driven clutch. Install the new belt by reversing this process. Ensure the belt is aligned properly before reattaching the cover.
Clean the vehicle thoroughly and perform any necessary maintenance. Fill the fuel tank and add a stabilizer. Store the Ranger in a dry, covered area and disconnect the battery to prevent drainage.