Using your K&N Universal Air Filter is easy. First, find the right spot in your equipment's air intake system. Make sure the filter fits snugly, and if needed, stretch the rubber flange up to 1/16 of an inch to get a proper fit. When it comes to maintenance, check the filter regularly. Once it gets dirty, it's time to clean it. Simply wash it with a mild cleaner, rinse thoroughly, and let it dry completely before putting it back. Avoid using harsh chemicals as they can damage the filter. Also, ensure that the filter is dry before reinstalling to prevent any issues with your equipment's performance.