Using your K&N Marine Engine Flame Arrestor is easy. First, make sure it's properly installed according to the engine's specifications. When you're out on the water, it'll work continuously to protect your engine and boost performance. As for maintenance, check the oiled cotton gauze and epoxied screen filter element regularly. If it looks dirty, clean it gently following the cleaning instructions provided. Also, be careful not to damage the filter during cleaning. Always store the arrestor in a dry place when not in use to prevent any rust or damage. With these simple steps, your K&N Flame Arrestor will keep your marine engine running smoothly for a long time.