Using your K&N Universal Air Filter is easy. First, find the right spot in your equipment's air intake system where the filter can fit properly. Make sure to attach it securely using the rubber flange. When it comes to maintenance, check the filter regularly. If it looks dirty, it's time to clean it. You can wash the filter with a mild cleaner and water. Let it dry completely before reinstalling. Remember, don't over - stretch the rubber flange more than the recommended 1/16 of an inch (1.5mm) to avoid damaging it. Keep it away from sharp objects to prevent tears. With proper care, your K&N filter will serve you well for a long time.