Ivey

First off, a big thank you to all of you for the information on cleaning and restoring vintage machines! I posted a question about my Grandmothers machine and you all were very helpful. I now know that hers is a Singer 66.

So a few weeks ago I spotted a Singer model 27 on Craig's list not far away from me.....of course once I saw the machine it had to come home with me!

the machine and cabinet are in great shape, I have cleaned and oiled the machine and replaced the treadle belt. (The first thing we did was remove the motor).

My my question is around stitch length, the machine had a knob for stitch length regulation but it doesn't seem to make any difference when I turn it. Any ideas? Thus far I have been afraid to take that particular piece of the machine apart.

Thanks in advance for any info