What a find. This is the Holy Grail of Brother machines. Be sure to read the manual thoroughly on the proper way to use the wishing dial. I'm not home to look it up and I haven't used mine for about a year but you're supposed to hold one of the levers down and I *think* pull out on the dial to turn it. I can't remember exactly. You would think I'd know this by now as long as I've had this machine. BTW, I'm the one who put the service manual up on the VintageJapanese Yahoo group. It's got some complicated innards what with two sets of cams etc....
Cari