I serviced up a Nelco Zigzag machine yesterday. The machine has a fairly high sentimental value, is well used, and is somewhat unique. It was stuck in zigzag mode that was easy to overcome, but what is unique about it is the way that the reverse or backtack was and has to be activated.
The reverse button is broken off inside of the machine, and has to be activated by a slender finger or some kind of tool that is the same or smaller diameter as the missing button. Apparently, the previous owner used the machine for some time in this condition, so it’s going to stay that way.
Maybe the previous owner was part of the "Use it up, wear it out, make it do, or do without!" generation?
CD in Oklahoma