Question about Elna 2007 Mechanical Sewing Machine

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Elna su motor won't turn off

I have an old Elna SU mechanical sewing machine. It sews just fine. I was sewing this morning, I walked away and the machine started to sew on it's own. Now I can't stop it. If the power is on, the machine runs at maximum speed. What can I do?

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  • littlegem Feb 17, 2008

    I have an Elna Super. It would "hum/knock" if left plugged in, the on/off switch on the machine was off. The repair person said the foot control was no longer good and provided an electronic replacement. It worked (sews well) but in a very short time while sewing it suddenly races to full speed, no foot on the pedal, turning the on/off switch to off doesn't stop it, only pulling the plug out stops it. The power is "leaking" through in some fashion. The original cord is still used (wired onto the new foot). My husband hoped to find a wiring diagram so that he could find the problem. But maybe someone has an answer?

  • sash4 Oct 28, 2008

    I have an Elna Supermatic C1.62 that has also started operating at maximum speed as soon as I plug the electrical cord in. I have opened the foot control box, but am unable to figure out where the suppressor is and have been unable to find a diagram that illustrates on the Internet. Any help will be greatly appreciated.

  • paddy60 Feb 21, 2009

    Same as others noted. Our unit was purchased in 1975 in NZ and I brought it home and first built a 115/230 transformer and ran it and then when we built our house I put in 240V receptacles and have run it for about 16 years - no problem till 2 weeks ago when it will run at speed when ever the plug is connected to the machine and the wall.
    What was the final solution? got photos??

  • Anonymous Mar 25, 2014

    machine will not sew fast



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It is only your Capasitor that is faulty and can be by passed

Posted on May 01, 2009

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There wasn't anything like a suppressor any other ideas?

Posted on Feb 18, 2008

  • littlegem Feb 21, 2008

    Our machines have a suppressor on the in side of the motor housing. I can email you the info on how to snip the wires and remove it. Mine does not smell or look burned out. Use my business email of
    It may take me a while to check but I am glad to pass the info on to you. These are great machines, I'd hate to have mine junked.



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