I have a 16-3 x 80, agree with jcp, there's not much in the manual. For example you have to change out a gear to cut 11 1/2 tpi, you'll never figure it out using the manual, guess the manual indicated something had to be done. Believe its made in Poland, a lot was lost in the translation.
I've had it for 12 or 13 years, been a great lathe.
Maybe contact Summit in Oklahoma, they may be able to help you out.
Greg