24. SERVICE PROCEDURE 24.5 EVERY 500 HOURS SERVICE Carry out maintenance for EVERY 250 HOURS SERVICE at the same time. 24.5.1 REPLACE FUEL FILTER CARTRIDGE WARNING The oil is at high temperature after the engine has been operated, so never change the oil immediately after finishing operations. Wait for the oil to cool down before changing it. Do not bring fire or sparks near the fuel. Prepare a filter wrench and a container to catch the fuel. 1. Close supply valve 1 of the fuel tank. 2. Set the container to catch the fuel under the filter cartridge. AE134340 3. Remove drain plug P and drain the oil. 4. Using a filter wrench, turn filter cartridge 2 to the left and remove it. 5.
Clean the filter head, fill a new filter cartridge with clean fuel, coat the packing surface thinly with engine oil, then install it to the filter holder. 6. When installing, tighten until the packing surface contacts the seal surface of the filter holder, then tighten a further 1/2 to 3/ 4 turns. If the filter cartridge is tightened too far, the packing will be damaged and this will lead to leakage of fuel. If the filter is too loose, fuel will also leak from the packing, so always tighten the correct amount. 7. After replacing filter cartridge 2 , loosen air bleed plug 3 , and open supply valve 1 . 8.
Loosen the knob of priming pump 4 , and move it up and down to make the fuel overflow until no more bubbles come out from air bleed plug 3 . 3-60