I have the Pfaff 2134 which I don't think is much different from yours. Just raise the lever for the presser foot about half way up from the bottom, slowly, and you should feel a catch. Then gently push the lever toward the back and it should just click into place. Instructions may be in your manual that have a better description than I do. But that's it, about half way between fully up or down and then a little toward the back. Good luck!