Carburetor float chamber structure

The utility model relates to a carburetor float chamber structure which comprises a shell and a float chamber. An oil inlet needle valve and a float assembly are arranged in the float chamber. The float assembly comprises a float arm which is arranged on the shell through a swing shaft in a rotating mode. A float is fixed to the float arm which is provided with a needle valve control piece. The needle valve control piece is movably arranged on a lever type swing piece on the float arm, is assembled on the float arm through an installation rotating shaft and can swing and slide. The swing direction of the needle valve control piece is the same as the rotating direction of the float arm. An oil surface height adjusting mechanism is connected with the needle valve control piece and comprises an adjusting rod and an adjusting operation assembly which controls the adjusting rod. The adjusting rod is assembled on the shell in a sliding mode, one end of the adjusting rod is inserted into the float chamber and hinged