elnan

That is the time to take your foot off the control and start over. In teaching 4-H kids to sew, there is usually a very large eraser duct-taped under the part you press down with your foot. This helps keep them from going out of control with pedal to the metal. Someone else suggested lubricating the spring, which I sometimes have to do when there is a very large spring that looks similar to the ones on wooden clothespin. Where that spring makes many loops or coils, I smear a bit of vaseline on the coiled part and squeeze the pedal down and up a number of times. Of course, do this with the machine unplugged until you are prepared to sew.

Don't give up on this machine. Toyota sewing machines were built to be work horses. Learn to handle it and keep it when you get a second machine. A backup machine is always a good idea.