Be careful!
Please keep your hands well away from the "hand" wheel (this can be difficult for experienced sewers accustomed to fine-tuning speed by manually applying drag to the wheel). I once saw a woman's fingers crushed/mangled by the exposed belt of a machine like this one. She may have lost them. Seeing this still makes me shudder, 40 years later. If I were going to use this machine, I'd get my husband to fabricate a guard to ensure that I couldn't touch the wheel while the motor is running. It looks like a fabulous machine; congrats on the find!