Unscrew the retaining clips and remove the upper cover of the air filter body, being careful to note that in models with the ACE, AAD and AAA engine the airflow meter and fuel distributor are also connected to the upper cover. Take out the Air Filter of the main body, be sure to record the orientation. Clean the main body with a towel, and install the new Air Filter, keeping in mind that it should be installed in the right direction. Re-fit the upper cover and screw it with the retaining clips.