MAINTENANCE 24.7 EVERY 500 HOURS SERVICE Maintenance for every 50, 100, and 250 hours should be performed at the same time. 24.7.1 REPLACE THE FUEL FILTER CARTRIDGE WARNING Engine is at high temperature immediately after the machine has been operated. Wait for the engine to cool down before replacing the filter. Do not bring fire or sparks near the fuel. Prepare a filter wrench and a container to catch the fuel. 1. Open the side cover located on the right side of the machine. 2. Set the container to catch the fuel under the filter cartridge. 3. Using a filter wrench, turn the filter cartridge (1) counterclockwise to remove it. 4. Clean the filter holder.
Fill a new fuel filter cartridge with clean fuel. 5. After coating the filter’s seal with engine oil, install the filter to the holder. Tighten the filter until the seal contacts the surface of the holder, and then turn the filter an additional two-thirds of a turn. Excessive tightening of the filter will damage the seal and cause a fuel leakage. A loose fuel filter cartridge will also cause fuel leakage. 6. After replacing the filter cartridge (1), loosen the air bleed plug (2). 7. Loosen the feed pump knob (3) and move the pump up and down to draw off the fuel until air ceases to come out of the air bleed plug (2). 8. Tighten the air bleed plug (2).
Push in the feed pump knob (3) and then tighten it. WARNING When cranking the engine, confirm that the area around the engine is safe because the engine could start. 9. After replacing the fuel filter cartridge, turn the key in the starting switch to the START position. The air will be bled from the fuel system within a few seconds. 10. After starting the engine, check for fuel leaks at the fuel filter. If any fuel leakage exists, repeat steps 2 and 3 to remove the filter cartridge and check the seal. If it is damaged, replace the seal with a new one. Repeat steps 4 to 9. WA450-3MC 3-47