Using your AS3 fuel cap is easy. Just unscrew the old cap and screw on the new one tightly. Make sure it's properly sealed to prevent any fuel leaks. When it comes to maintenance, keep the cap clean by wiping it with a soft cloth. Check the breather hose and one - way vent regularly to ensure they're not blocked. If you notice any signs of damage or leakage, contact our support team right away. And remember, this cap comes with a 12 - month warranty, so you can use it with confidence.