I just got a singer 132k6 what would be the heaviest tread and needle it can use i set it up wit a 750 w servo mottor since thw one ii had eather capasitor may be bad or the hile mottor its a bit confusing since the mottor is 120v the capacitor is 330v and the box where the on and capacitor and of on and off swich is is calling for 250v. (Transmiter mottor and swich+capacitor).
The leather belts slips from time to time.