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Singer 522 starts sewing at speed without the pedal being used at all. Once plugged in and switched on the machine starts sewing at full speed without me pressing the pedal at all. I can't get it to stop unless I switch the whole machine off. There was also a horrible burning oil/hot metal smell coming from the foot pedal after a couple of seconds of mad high speed automatic sewing!
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unplug the foot controller to eliminate it as the problem ,however if the machine does not run like mad as soon as you switch it on
without the foot pedal then you have isolated the problem to the foot pedal,it could be stuck on full speed .
It is most likely the foot pedal has failed. The pedal motor circuit is very simple and it is not possible for any other component to cause the machine to go into a race condition other than a defective pedal.
Check the spring return of the pedal. If it is not operating freely it might be repairable. If it is not the spring then the pedal is not likely repairable..
you may find that the footpedal is faulty however there is a place on your footpedal where you can adjust the speed.. or sensitivity it takes a small screwdriver, have alook at your pedal is there a tiny screw or little hole maybe a plus or minus sign on it
Well, you are definitely getting power from the electric plug in.
Let's do some diagnostic work. Do you hear anything when you press the foot pedal? Any hum? Did you happen to leave it in bobbin winding mode?
your machine doesn't have a "sew" button for use without the pedal. So please rotate the hand wheel toward you as you press the pedal. Did the motor take over and sew?
If you know someone with a meter... have them test the pedal. (they will place probes on/in the part that plugs in which tests for shorts, etc.) If that tests ok... then we know it's something more than the pedal and it will need servicing by a Singer Tech.
The foot pedal usually is a speed controller too, It is NOT a simple On Off, switch. You could no doubt wire another sort of controller to it though, they are all pretty much the same. In saying that though, SOME are just an On/Off foot switch well in this case YES you could do as you want. But it is unlikely you have one of those sorts. The controller is a Rheostat if you are handy enough I am sure one could wire another sort of rheostat to this machine safely. I have heard of the speed controllers from mains powered Drills being used in a pinch, the trick is to wire it up to the foot pedal.
your foot pedal is just like an accelerator , lifting and pressing the foot increases and decreases the speed ,but if this does not happen ,,change your foot pedal
No solution I'm afraid - but it has just happened to me too on a 1975 singer 522 Machine. Like you just switched it off and am now sourcing a new pedal....did have a look inside the pedal but nothing obvious - smells horrible though and will not use until replaced.
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