Elna Super will not stop running

Check your owner's manual for presser foot pressure adjustment. Yours is probably set too lightly.

Sewing machines basically thread in the same manner--from the spool through a thread guide or two, then through the tension disk, up and over the take-up lever, then down through guides to the needle.. Just be sure to ALWAYS RAISE the presser foot when threading the top thread so the thread will seat fully in the tension disk.

If you had it serviced and still having a problem, take it back to the technician.

take the foot control in to a sewing machine repair shop and have it tested
earlier models were a simple resistance variation but later models are electronic control
it could be a simple broke connection in the control

theres a reostat in the machine thats sticking...try a new controller but its probably the internal reostat

This will be the bellows inside the side panel of the machine where your foot pedal air line feeds into rather than the foot pedal. Really short of cutting or sitting on the air line with your chair, not much goes wrong there. It,should be repairable if you can locate a Swiss Elna trained/experienced techician.

Take a look at the side plate on your Elna and look for a two digit code, this is the model number.

I'm assuming that you are in the USA on 110 Voltage. If so visit this website,
http://www.sewingpartsonline.com/elna-sewing-machine-parts-model-list.aspx and choose your model. They sell replacement foot pedals, just check the profile of the plug that goes into your machine.

The other option is contact the Elna guru, www.whitesewingcenter.com, he stocks a wide range of swiss Elna parts and may have the original foot control second hand.

If you are on 240 voltage then you'll need to source it from a country that has the same voltage like UK, Australia or NZ.

Lastly, you may wish to join the Yahoo group called "ELna Heirlooms" this user group of Elna owners is really helpful and shares lots of their love and knowledge for these beautifully made Swiss machines. Many of them have even earlier models than yours such as the Green Grasshopper, the first Elna machine.

go to yahoo.com and join the Elna Heirloom group there. Several of the members are very knowledgeable and I've read fixes on this issue there.

this sounds like the internal clutch drive is worn, it probably is not the foot pedal at all. It may be possible to repair it if you can track down an Elna serviceman. My Air Electronic SU got worn internally and my serviceman was able to repair it once for me.

Most likely this is a problem in the foot control and it will need to be replaced or repaired.
sewman7