I just got my hands on a Harris 9 machine that until today, has been working perfectly. All of a sudden, when I crank the handle, the bobbin mechanism and needle arm no longer move. The crank handle moves freely and isn't sticking at all, so I'm guessing that something has become loose or disengaged. Neither move regardless of whether the bobbin winder is engaged. All the tutorials on troubleshooting I can find seem to focus on seized mechanisms, whereas I'm having the opposite problem
I believe my machine was manufactured by Stoewer. Could anyone maybe suggest what's happened to my machine? I did some lovely top stitching with it earlier today so it's a total mystery to me!