. MAINTENANCE MAINTENANCE PROCEDURE again. of be it with a new NOTICE 4 - 64 Cleaning Fresh Air Filter 1. Pull up pop-up rivet (4) of t he air in take duct at the left r ear of the operator's s eat. Cover (5) will be released automatically 2. Pull up externa l filte r (6 3. Clean e xternal filter (6) by compressed air. If there is oil stuc k to t he f ilte r or it is extremely d irty, wash it in a After sing it REMARK I f the cloggi compresse one cannot washing removed eplace the filter 4. Install c leaned filter (6) and then fi x cover (5). Insert filter (6 ), paying attentio n to the top a nd bottom s ides.