J Miller doesn't know how to rewire a motor to change the voltage requirements. Were this his machine he'd hunt up a US voltage motor and swap it out. Much easier to his way of thinking.
Actually he has done just exactly this with a German market "Ideal Automatik" ZZ machine. It came with the original 220 or 240 volt motor and system. Sew-Classic had the parts and Joe did the work. Machine works like a dream too.
Joe