MAINTENANCE 3. Bleeding Air From Fuel System AIR PLUG WARNING FUEL FILTER CLEAN UP ALL SPILLED FUEL TO PREVENT FIRES. DISPOSE OF HAZARDOUS WASTE ACCORDING TO ENVIRONMENTAL LAWS AND REGULATIONS. If air contaminates the fuel system, the engine may become hard to start or it malfunction. Bleed the air whenever the fuel tank is empty, the wa- ter separator is drained, or the fuel filter element is replaced. See Figure 4.29. a. Loosen the priming pump knob. PRIMING PUMP KNOB AIR PLUG b. Loosen the air plug located on top of the fuel filter support mount. c. Pump by hand to supply fuel until air bubbles stop coming out of the air plug. 4 NOTE Use paper towels or rags to contain any fuel spills.
AIR PLUG d. Tighten the air plug when no more air bubbles are present. e. Continue pumping, even after tightening the air plug. Stop pumping with the handle in the lower position and tighten the knob completely. NOTE The air in the injection pump will automatically be forced out when the engine starts. f. Run engine at low idle for 5 minutes to check and make sure there isn’t any fuel leakage. Repair if needed. SK32004093 TO UPPER RIGHT FIGURE 4.29 SK210(LC)/SK250(LC)–VI Dynamic Acera OM, 09/00 Rev.2 4-29