Choke valve subassembly of carburetor

The utility model relates to an auto part, in particular to choke valve subassembly of carburetor. The utility model provides a following technical scheme: an elevating system, sealed end department is equipped with the sealing member that choke valve subassembly of carburetor, including hinder throttle shaft and with hinder the choke door plant that throttle shaft is connected, offered the arcuation mounting groove on hindering throttle shaft's outer peripheral face, be equipped with in the arcuation mounting groove with the arcuation installation piece that hinders throttle shaft fixed connection, the mounting groove with arcuation installation piece adaptation is offered to the choke door plant on the inner wall of arcuation installation piece, hinder throttle shaft's axial one end and holds for sealed for drive end, the other end, its drive end department is equipped with to impel and hinders the throttle shaft lift. Adopt above -mentioned technical scheme, provide that a liftable, leakproofness are good, simple structure's choke valve subassembly of carburetor.