I bought a Pfaff 545 a few weeks ago and I love it. The motor, however, is way too fast for my tastes and I find that with precise stitching around corners I have to turn off the motor and start moving it by hand. This lends itself to really inaccurate and uneven stitching, because the fabric shifts too much. I want to sell the motor and get a servo on Ebay.
The motor it has now is a 1/3 HP 1450 RPM "Subem" model M-60. I looked them up and found nothing. My guess is that they are a defunct Japanese company. What would be a fair asking price for this type of motor?