24. SERVICE PROCEDURE 24.2.2 CHECK, CLEAN AND REPLACE AIR CLEANER WARNING Never clean or replace the air cleaner with the engine run- ning. When using compressed air to clean the element, there is danger that dust will fly and get into your eyes, so always wear safety glasses. CHECKING If dust indicator 1 shows red, clean the air cleaner element. NOTICE Do not clean the air cleaner element until the dust indicator shows red. When cleaning the element frequently before the dust indicator shows red, the original function of the air cleaner cannot be performed and cleaning efficiency is deteriorated.
What’s more, when cleaning the element frequently, the frequency of the dusts, which is adhered to the element, dropping to the inner element, is increased. AE133940 CLEANING OR REPLACING OUTER ELEMENT 1. Remove the wing nut 2 , then remove outer element 3 . 2. Clean inside the body. AE133950 3. Direct dry compressed air (less then 0.69 MPa (7 kgf/cm 2 , 99.4 PSI) along the folds of the element from the inside. Next, blow with air along the folds from the outside, then blow with air again from the inside. (1) Remove one seal every time the element is clean. (2) Replace the outer element if it has been cleaned 6 times or if it has been used for one year.
When replacing the outer element, replace the inner element at the same time. (3) If the dust indicator shows red immediately after the outer element has been cleaned, replace both the inner and outer elements even if the outer element has not been cleaned 6 times. (4) Check for looseness of the inner element mounting nut, and tighten it if necessary. (5) If seal washer 5 is damaged or the thread of wing nut 2 is broken, replace with new parts. (6) Remove evacuator valve 4 and clean it with compressed air. After cleaning, install it again. AE133960 AE063670 3-28