Suzuki KingQuad 400ASi LT-A400F 2018 Owner's Manual

To perform an oil change, first warm up the engine, then turn it off and place the ATV on a level surface. Remove the oil fill cap and drain plug, and let the oil drain completely. Replace the drain plug and fill the engine with the recommended oil type and amount. Finally, replace the oil fill cap.
If your ATV won't start, check the battery connections for corrosion and ensure they are tight. Verify that the fuel is fresh and the fuel valve is on. Inspect the spark plug and replace it if worn or fouled. If the problem persists, consult a professional mechanic.
The air filter should be checked and cleaned every 100 hours of use or more frequently if you ride in dusty conditions. Use compressed air to blow out dirt from the filter, or wash it with a mild detergent and water if it's excessively dirty.
To adjust the drive belt tension, locate the tension adjustment bolt near the drive pulley. Loosen the lock nut and turn the adjustment bolt to achieve the correct tension, as specified in the owner's manual. Tighten the lock nut after adjusting.
Use a high-quality ethylene glycol-based coolant that is specifically designed for aluminum engines. Ensure it is mixed with distilled water at a 50/50 ratio. Avoid using automotive coolants that contain silicate.
Check the coolant level and ensure there are no leaks in the cooling system. Ensure the radiator fins are clean and free from debris. Verify that the cooling fan is operating correctly. If the problem continues, have the thermostat and water pump inspected.
The recommended tire pressure is typically around 4 psi for the front tires and 5 psi for the rear tires. Always refer to the owner's manual for the exact specifications and check the pressure when the tires are cold.
Routinely check the brake fluid level and top it up as necessary with the recommended type. Inspect brake pads for wear and replace them if they are thin. Ensure the brake lines are free of leaks and the calipers are functioning properly.
Clean the ATV thoroughly, change the oil and filter, and fill the fuel tank with stabilized fuel. Disconnect the battery and store it in a cool, dry place. Keep the ATV covered and stored in a dry, sheltered area to protect it from the elements.
Regular maintenance includes oil changes every 6 months or 100 hours, air filter cleaning every 100 hours, and brake system inspection every 6 months. Full inspection and servicing should be done annually or as recommended in the owner's manual.