Outboard motor fuel supply unit

An outboard motor fuel supply unit for supplying an engine with fuel stored in a fuel tank, comprising:

• a low-pressure fuel pump that pumps up the fuel from the fuel tank;
• a vapor separator that performs vapor-liquid separation for the fuel pumped up by the low-pressure fuel pump;
• a fuel filter that filters the fuel subjected to the vapor-liquid separation in the vapor separator;
• an in-line type high-pressure fuel pump that has an inlet port for receiving the fuel filtered by the fuel filter and pumping the fuel received from the inlet port from an outlet port, the inlet port being located under a fuel liquid level of the vapor separator;
• a fuel injector that injects the fuel pumped by the high-pressure fuel pump to the engine;
• and
• a fuel flow path connected from the vapor separator to the inlet port of the high-pressure fuel pump via a lower side of the inlet port of the high-pressure fuel pump,
• wherein the fuel filter is arranged in the lowermost part of the fuel flow path.