Using your K&N universal air filter is easy. Just find the right spot for it in your equipment's air intake system and attach it firmly using the pliable rubber flange. When installing, make sure there are no gaps to prevent unfiltered air from getting in. As for maintenance, it's a good idea to check the filter regularly. If it looks dirty, you can wash it. Use a mild soap and warm water, gently scrub the filter, then rinse it thoroughly. Let it dry completely before reinstalling. Remember, don't use harsh chemicals as they can damage the filter. Also, if you notice any signs of wear or tear on the rubber flange, it might be time to consider getting a new filter.