Using your K&N Universal Air Filter is easy. First, find the right spot for it based on your equipment's air intake. Make sure to stretch the rubber flange if needed to fit it properly. Attach it securely to prevent any air leaks. When it comes to maintenance, check the filter regularly. Once it gets dirty, simply remove it and wash it with mild soap and water. Let it dry completely before reinstalling. As a note, don't use harsh chemicals as they can damage the filter. And always double - check the fit after cleaning to ensure it's working at its best.