Originally Posted by
AlZilla
I believe the 158.10400 machines have the extra pulley.
That PDF is very interesting. It appears that all 2 pulley machines are 158s, but maybe not all 158s have the double pulleys. Definitely gives me something to work with. Thanks!
You're welcome. I believe that the PDF is a "work in progress" intended to gather information from users. The blanks do no mean that some machines do not have the double-pulley system. From what I can gather, most if not all 158 machines have the double pulley system. What the PDF tells you is that users have confirmed those models are double pulley machines.
And given that the machines such as the 17600 was part of a series, I believe what it means is that all of the machines in that series have the double pulley set up. I stand to be corrected on all of this, but I believe that to be the case.