MAINTENANCE 3 REPLACE FUEL MAIN FILTER ELEMENT --- every 500 hours IMPORTANT: Be sure to use only genuine Hitachi elements for the main fuel cartridge and the pre- cartridge. Failure to do so may deteriorate the engine performance and/or shorten the engine service life. Please be noted that all engine failures caused by using other manu- facturers’ elements are excluded from Hita- chi Warranty Policy. Procedures: 1. Close cock (3) on the bottom of the fuel tank. 2. Place a 1-liter or larger capacity drain container under drain plug (2). Main Filter Pre-Filter 3. Loosen air bleed plug (1) and drain plug (2). Drain fuel until fuel does not flow out of the filter. M1U1-07-014 4.
Remove transparent filter case (7) using the exclusive tool. 3 5. When transparent filter case (7) is removed, the element is exposed. Remove the element by hand. 6. Install a new element. Tighten transparent filter case (7) to 29.4 ± 2 N-m using the exclusive tool. 7. Tighten air bleed plug (1) and drain plug (2). M1U1-07-015 8. Open cock (5) on the bottom of the fuel tank. 9. Bleed air from the fuel supply system. Main Filter After replacing the fuel filter element, bleed air from the fuel supply system. (Refer to the air bleed procedures de- scribed on page 7-45.) Wrench size: 10 mm 1 M1GR-07-010 7 2 M1GR-07-002 7-59