body 10 into a different rotating position according to a preferred embodiment of the present invention the rest position is a position wherein a surface preferably a pin 30 fig2 is positioned within slot 22 so that rotation of shaft 12 relative to main body 10 is limited by the extent to which pin 30 can rotate within slot 22 the amount of rotation allowed which is dictated by the position of stop surface 32 should be selected to be sufficient to allow a lifting of the flapper of only a relatively small degree for example about one half to one and one half inches more or less depending upon chain slack and other flapper or flushing mechanism variables the amount of rotation should be sufficient to allow limited water flow from the tank to the bowl of the toilet preferably suitable for clearing a bowl containing only liquid and paper waste without causing a full flush when shaft 12 is moved axially relative to main body to the full flush rotation position which is as is illustrated in fig2 pin 30 is not radially within slot 22 and shaft 12 can therefore rotate normally relative to main body to allow a complete rotation and thereby a complete lifting of the lift arm structure and full lifting of the connected flapper as is well know.