Abstract: An improvement in false-twist yarn texturing machine of the type having a plurality of treatment positions each of which includes a yarn feed device, a first yarn delivery carriage, a heating tube, a cooling tube, a false-twist spindle, a second yarn delivery carriage, and a winding device, as well as an air blowing device located at the inlet of the heating tube and a suction device for removing smoke at the outlet of the heating tube, the improvement being a tubular connection between the outlet of the heating tube and the inlet of the cooling tube, which connection is pivotally mounted so that one end thereof can temporarily be engaged with the outlet of the heating tube, and the cooling tube is slidably mounted to permit sliding in the direction of its own longitudinal axis, the other end of the tubular connection being connected to the inlet of the cooling tube so that pivoting of the tubular connection may be caused by sliding the cooling tube in the direction of the tubular connection.