Honda BF15D BF20D Outboard Motors Shop Manual., Page 124Get this manual

Honda BF15D BF20D Outboard Motors Shop Manual., Page 124

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bINSPECTION FUEL PUMP
2) Apply oil to new O-ring and install it to the fuel pump
3) Install the fuel pump with the tube joints facing the carburetor side and tighten the 22 mm flange bolts