Mercury - Fuel Line Assembly for Mercury and Mariner Outboards Fuel System Low-Permeation Gray Hose 8M0061894. OverviewIf you have ever stood at the ramp squeezing a tired old primer bulb while your outboard refuses to wake up, you know how quickly a fuel line can ruin a good morning. When the line is right, you barely think about it. A few squeezes, the engine lights, and you are backing away from the dock with a grin. The Mercury 8M0061894 Fuel Line Assembly is built for that kind of start. It