Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 86Get this manual
BF50BF5A
4FUEL SYSTEM
aFUEL FLOW
The fuel line connecting the fuel tank to the outboard motor is equipped with primer bulb that is used to fill the system with fuel to start the engineAfter starting, the engine fuel pump maintains the flow of fuel to the carburetorThe system contains two fuel filters; one filter is located inside the fuel tank, and another filter is located in the outboard motor, on the line that leads to the fuel pump inlet