If you've found your fur sewing machine runs too fast, or is hard to control, you can install a speed reducer pulley. I wanted to install one on my Techsew 202 to make it easier for students at my upcoming fur sewing classes this year (sign up at https://darlingleatherandfur.com/collections/classes). I ordered the pulley from Toledo Industrial Sewing Machines (https://www.tolindsewmach.com/) they carry two styles, a box style and a stand alone style (SR-2). I decided to try the stand alone style