Using your K&N Universal Oval Clamp - On Air Filter is easy. First, find the right spot for it based on your equipment's air intake. Attach the filter securely using the clamp. Make sure it's firmly in place to prevent any air leaks. When it comes to maintenance, check the filter regularly, especially if you use your equipment in dusty or dirty conditions. Once it gets dirty, it's time to clean it. You can wash the filter with a gentle cleaner and warm water. Rinse it thoroughly and let it dry completely before putting it back on. Avoid using harsh chemicals as they can damage the filter. Also, when stretching the rubber flange to fit between sizes, be careful not to over - stretch it as this might affect its performance.