A couple of years after I had the machine, the machine would literally sew on its own after I had taken my foot off from the pedal. I would be sewing along and then it would just keep on stitching after I would stop pressing on the pedal. It was a little frightening as I thought she was seriously broken and I had to turn off the machine to make it stop. So of course, I consulted with Google.
It turns out that I was not alone. Other sewers had reported the SAME thing! Here is what I discovered. First, you need to know that this machine has a pedal that is ALL METAL. Most pedals nowadays (even my sewing/embroidery machine combo) have plastic pedals. I have never had this happen with them.
Basically what was happening was that there was a build up of static electricity in the pedal that was causing this phenomenon to happen. I am not sure if it is because the pedal is on carpet or because I always wear socks when I sew or what but that is what was happening. I found another person on the internet who gave a solution that has helped me and so I wanted to post it again to maybe help someone else in this situation.
Here is what you need: your pedal, a tool kit with small screwdrivers, and a pencil with a rubber eraser.
First things first, UNPLUG YOUR FOOT PEDAL FROM YOUR SEWING MACHINE. Yes, it is worth mentioning as it would not be wise to go through the steps in this tutorial with it plugged into a power source. Thank you, Susan M., for catching that!
Next, see that little screw at the base of the pedal? Go ahead and unscrew that. Choose the right screwdriver for the size screw so that you don't strip it. Ask me how I know, lol.
Go ahead and take the cover off from the pedal. My pedal only has two parts that come apart at this point. If you are afraid that you won't remember how yours goes back together, take pictures with your cell phone as you work to help you remember later on.
Here is what the inside of the pedal looks like. It is a little overwhelming to look at but we will walk through it.
See those connectors that my pencil tip is pointing at? If you press down on the pedal, the little connectors (sorry, I don't know the proper term) slide along the brown plate where the black marks are. That is area we need to focus on.
Take the rubber eraser on your pencil and rub that area down. I rub all along the brown plate where both of the black track marks are. From what I read, the rubber helps to take away the static electricity. Do a good job as you don't want to have to do this again for awhile, lol.
Now comes the fun part of putting everything back together! I put my two pieces back together and make that the holes for the screw match up. Go ahead and use your screwdriver to put the screw back in its place.
That should do it! At the most, I do this about every 1-2 years or as buildup occurs. Folks on the internet suggest to just buy a new foot pedal and you may need to if this solution does not immediately take care of the problem but I am not convinced that this wouldn't happen with a new metal pedal. Others have suggested putting a rubber mat under the pedal to help keep down the static electricity and I did do that for awhile and it did help. I should get that mat back out again now that I don't move my machines around as often as I did when I taught sewing classes.
I would love to hear if you have had this problem and if this solution helped!