6 6.1 Lubrication System Service and Maintenanceen © 24 511 1 Remove oil drain screw 1 and let the oil run out. Catch any escaping oil. Remove tensioning screw 2. Remove cover. Remove soiled filter 3. Clean filter casing. Check cover 4 for leaks, and replace if necessary. Screw in oil drain screw with a new seal ring 5. Insert new filter. Screw on cover with seal ring 6. During trial, observe oil pressure and check for leaks. 6.1.4 Change bypass-oil filter use © 24 511 1 © 24 511 1