[LittleWingCA]

On my Yanmar 2QM15 engine the return fuel line doesn't run to the fuel tank, but to another input connection to the Yanmar's local fuel filter housing assembly. When I had a mechanic service the engine after buying my boat, he bled the fuel system by simply using a hand held pump like he used to extract the dirty oil, and connected it to the end of the return hose. As he applied suction, the fuel was pulled from the tank, through the fuel line, through the new Racor assembly, through more fuel line, through the Yanmar fuel piping system and out the return line. Once he saw some come out the return line, he just connected the hose back to the fuel filter assembly, tightened the hose clamp, and the engine fired right up on the first try.