24. SERVICE PROCEDURE 24.8 EVERY 2000 HOURS SERVICE Maintenance for every 50, 250, 500, and 1000 hours should be carried out at the same time. 24.8.1 CHECK OIL LEVEL IN DAMPER CASE, ADD OIL Remove plug 0, and check that the oil is near the bottom of the plug hole. If the oil level is low, add engine oil through oil filler port 0. For details of the oil to use, see “20. USE OF FUEL AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE”. AE080960 3-58