The invention relates to a false twist texturing machine for texturing synthetic threads (4) at a treatment point comprising a false twisting area in which a heating device and a false twisting assembly are located. A second heating device and a counter-twist device are located in a post-treatment area. Here, any residual twist left in the thread by the false twisting assembly is removed. In order to be able to process the thread using the counter twist device if desired, a first possible solution provides for a twisting means and a guiding means which interacts with said twisting means. The guiding means guides the thread (4) and can be moved back and forth between a resting position for non-treatment of the thread (4) and an operating position for treatment of the thread (4). According to a second solution, the false twisting device has a moving twisting means (28, 29) which can be shifted back and forth between a resting position for non-treatment of or application of the thread (4) and an operating position for twisting the thread.