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 securely using the pliable rubber flanges. Make sure it fits well to ensure proper air flow. When it comes to maintenance, keep an eye on the filter's dirt level. Once it gets dirty, you can wash it with a mild cleaner and water. Let it dry completely before reinstalling. Be careful not to use harsh chemicals as they can damage the filter. Also, don't over - stretch the rubber flanges more than the recommended 1/16 of an inch (1.5mm) to avoid affecting its performance.