Using your K&N round air filter assembly is easy. First, make sure your engine is turned off and cool. Locate the air cleaner housing on your engine and remove the old air filter assembly. Then, place your new K&N assembly in its position, ensuring it fits snugly. Attach the base, element, and top plate as provided. When it comes to maintenance, check the air filter regularly. If it looks dirty, it's time to clean it. You can use a K&N filter cleaning kit for this. Make sure to dry the filter completely before reinstalling it. As for storage, keep the assembly in a dry place away from direct sunlight. Avoid using sharp objects near the filter as it can damage the delicate material.