Originally Posted by Lostn51

I am not even sure of the sub model of this machine. But you can use any 15 manual and it should have the information you need. The stitch length regulator is very unique in that it favors the 66-18. But it is still a valuable collectible and take very good care of her. If you can find a really nice cabinet for it then I would put it in there and not have a portable.

Billy