Using your K&N Universal Air Filter is easy. First, find the right spot on your equipment's air intake system that fits the filter's dimensions. The rubber flange can stretch a bit to help with installation. Make sure it's firmly attached to prevent air leaks. When it comes to maintenance, keep an eye on how dirty the filter gets. Once it looks dirty, it's time to clean it. You can wash it with a mild soap and water, then let it dry completely before putting it back in. Avoid using harsh chemicals as they may damage the filter. Also, check the rubber flange regularly for any signs of wear or damage. If you notice any issues, it might be time to replace the filter to keep your equipment running smoothly.