Carburetor choke valve electronic control system

A carburetor choke valve electronic control system includes: a transmission device (24) coupled to a choke valve (7) for opening and closing an intake path of a carburetor (C); an electric motor (20) for driving the choke valve to be opened and closed via the transmission device (24); and an electronic control unit (12a) for controlling operation of the electric motor. The system further includes: a casing (11) mounted on one side of the carburetor (C), and housing the transmission device and the electric motor (20); an operating lever (39) disposed outside the casing; and a choke valve forced closure mechanism that allows the transmission device to be operated in a direction that closes the choke valve (7) by operation of the operating lever (39).