CFMOTO CFORCE 400 CF400AU 2018 Owner's Manual

The recommended oil type for the CFMOTO CFORCE 400 CF400AU 2018 ATV is 10W-40, and the oil capacity is approximately 2.0 liters.
It is recommended to change the oil every 50 hours of operation or every six months, whichever comes first.
The recommended tire pressure for the front tires is 20 psi, and for the rear tires, it is 22 psi.
If your ATV is having starting issues, check the battery connection, ensure the fuel valve is open, and verify that there is fuel in the tank. Also, inspect the spark plug for wear or damage.
Regular maintenance checks should include inspecting the brakes, checking the engine oil level, inspecting the air filter, and verifying tire pressure. Additionally, periodically check the coolant level and drive chain tension.
To improve performance, ensure regular maintenance is performed, use high-quality fuel, and consider upgrading the exhaust system. Keeping the air filter clean and using premium engine oil can also enhance performance.
If your ATV overheats, stop the engine immediately and let it cool down. Check the coolant level and ensure the radiator is not obstructed. If the problem persists, inspect the thermostat and water pump.
To adjust the idle speed, locate the idle adjustment screw on the carburetor. Turn the screw clockwise to increase the idle speed and counterclockwise to decrease it. Make adjustments when the engine is warm for accurate settings.
Use a high-quality ethylene glycol-based coolant mixed with distilled water in a 50/50 ratio. Ensure it is suitable for aluminum engines to prevent corrosion.
To replace the air filter, remove the seat and locate the air filter cover. Unscrew the cover and take out the old filter. Insert the new filter, ensuring it is seated properly, and reattach the cover.