Using this K&N air filter is easy. First, make sure your engine is turned off and cooled down. Then, remove the old air filter from your Yamaha YXZ1000R according to the vehicle's manual. Place the new K&N filter in the filter housing and secure it properly. When riding in very dirty or dusty conditions, it's a good idea to check the filter more frequently. If it looks dirty, you can wash it. To clean, use a mild soap and warm water. Gently scrub the filter, then rinse it thoroughly and let it dry completely before reinstalling. Don't use harsh chemicals as they can damage the filter. Also, make sure the filter is completely dry before putting it back in to avoid any engine issues.