. MAINTENANCE SERVICE PROCEDURE MAINTENANCE SERVICE PROCEDURE outer element. cup (4) is at the 4 - 23 7. Blow dry compress ed air (0.69 MPa {7 kg/cm 2}) from t he inside of outer element (6) along the folds. N ext, blow along th e folds from the outside, th en blow again fro m the inside. 8. After cleaning, shin e a light bulb from inside outer element (6) to the 9. Install outer eleme nt (6) in the air cleaner body 10. Check that O-ring ( 9) is fitted to dust cup ( 4). Next, set so that v acuator valve (8) of dust bottom, and insert i t into the air clean er body 11. Clip hooks (5) of du st cup (4) to the p rotruding parts of the air cleaner body to loc