I ran across a brochure that came with one of my recent purchases that I consider to be priceless.
How many times has your sewing machine just decided to stop sewing correctly. It was sewing fine last week, but now, it's doing all kinds of weird things. "What is going on"
I can only speak for myself, but I don't know how many times I just gave up trying to figure out what was going on only to return the next day to find I had missed the simplest little thing.
This brochure was put out by Kenmore, and I would guess, in the mid 60's.
(I hope you can click on the pictures to make them bigger)
The BIG 3
the little 3
Even though this brochure is specific to a certain style of machine, it can be easily translated to cover any machine. All sewing machines work the same. A bobbin is a bobbin, regardless how it loads or what size it is. Upper tensions may look different, but they all perform the same duty. Next time your machine acts up, calmly go through the above routine and check The Big 3 and the little 3.
Hopefully you will be one of the 8 out of 10 and correct the problem.