FUEL FEEDER

An object of the present invention is to reduce the size of a fuel supply device which is disposed inside the fuel tank of a two-wheeled vehicle or the like. A positive displacement plunger pump 20 comprising a plunger which performs a linearly reciprocating motion so as to suction and pressure feed fuel, and an entrance control-type fuel pressure regulator 50 which is connected to a discharge port 36a' of this plunger pump 20, and which adjusts the pressure of the fuel supplied to an injector 4, are integrally coupled to form a module which serves as a fuel supply device 10 disposed inside a fuel tank 1. By such means, the overall size of the fuel supply device 10 can be reduced (compacted), making the device particularly suited to installation in a small fuel tank of a two-wheeled vehicle or the like.