Here we have a Japanese made fuel pump that can be used for 50cc-300cc engines. This is a vacuum operated fuel pump that needs no electricity to operate it. You have 3 inlets. fuel from the tank comes into the pump from one side and leaves from the other side. Connect a vacuum hose from the middle nipple to the intake manifold nipple and this will make the pump start pumping as the engine is moving. This is the most common pump to be used when swapping your Honda Ruckus or Metro to a GY6 (125cc-232cc) engine. This pump can also be used for any other motor you want to adapt it to. we do offer another style for 50cc-150cc scooters click here.