Abstract: A marine propulsion device is provided with a fuel filter that is connectable between a fuel tank and a fuel pump, wherein the fuel filter is disposed below an adapter plate of the marine propulsion device. The adapter plate is located between the fuel filter and the engine so that the fuel filter is not located under the cowl of the marine propulsion device where an engine is housed.

Abstract: A device is provided for allowing a conduit to extend through a wall while providing a seal around the conduit. The conduit extends through an opening formed in the wall and the conduit has a first end, a second end, and a central axis extending within the cavity of the conduit and along its length. First and second protrusions of the first end of the conduit are shaped to be received through first and second slots of the opening formed through the wall. A resilient seal member is attached to the first end of the conduit and is compressible by moving the conduit out of a first position relative to the opening in which the first and second protrusions are aligned with the first and second slots. By moving the conduit away from its first position, the resilient seal member is compressed to provide a liquid seal which prevents liquid from leaking through the opening formed through the wall.

Abstract: A fuel supply system for a marine engine provides an additional fuel chamber, associated with a fuel vapor separator, that receives fuel vapor from a vent of the fuel vapor separator. In order to prevent the flow of liquid fuel into and out of the additional fuel chamber, a valve is provided which is able to block the vent of the additional chamber. In addition, a sensor is provided to provide a signal that represents a condition in which liquid fuel within the additional fuel chamber exceeds a predetermined level.

Abstract: A fuel system for a marine propulsion system includes a reservoir that defines a cavity in which first and second fuel pumps are disposed. The first fuel pump is a lift pump which draws fuel from a fuel tank and pumps the fuel into the cavity of the reservoir. The second fuel pump is a high pressure pump which draws fuel from the cavity and pumps the fuel at a higher pressure to a fuel rail of an engine.

Abstract: A fuel system for a marine propulsion system includes a reservoir that defines a cavity in which first and second fuel pumps are disposed. The reservoir is mounted on the marine propulsion system at a location which causes the reservoir to be at least partially submerged within, and in thermal communication with, water in which the marine propulsion system is operated when a propulsor of the marine propulsion system is inactive. The first fuel pump is a lift pump which draws fuel from a fuel tank and pumps the fuel into the cavity of the reservoir. The second fuel pump is a high pressure pump which draws fuel from the cavity and pumps the fuel at a higher pressure to a fuel rail of an engine.

Abstract: A method for controlling the operation of a fuel system of an outboard motor uses a lift pump to transfer fuel from a remote tank to a vapor separator tank. Only one level sensor is provided in the vapor separator tank and an engine control unit monitors the total fuel usage subsequent to the most recent filling of the tank. When the fuel usage indicates that the fuel level in the vapor separator tank has reached a predefined lower level, a lift pump is activated to draw fuel from a remote tank and provide that fuel to the vapor separator tank.

Abstract: A fuel pump is housed within the structure of a portable fuel tank. The inlet of the pump is located in the lower portion of the tank and an outlet of the pump is connectable in fluid communication with a flexible conduit. An opposite end of the flexible conduit is connectable in fluid communication with the fuel system of an outboard motor. A water sensor and a fuel level sensor can be provided in conjunction with the pump and attached to the pump in certain embodiments. A fuel pressure regulator is connected in fluid communication with the outlet of the pump and also located within the structure of the portable fuel tank.