Sounds like something defective/worn in the foot control. Could be carbon brushes that are worn.
Sounds like switch faulty or dirty contact making stick
SOURCE: No stitches 925D.
Probably your looper timing is off. This is common, and just a necessary evil of sergers. Their tolerances are tight.
The operation of creating a serger stitch is a succession of thread grabing and delivering. One looper grabs a thread and delivers it to the needle and so on.
To check this, turn your handwheel slowly and check to see that the upper looper is meeting the lower looper by passing very close to the indented part at the back of the lower looper (indented part is called the scarf, this is where the looper threads form a lock) If not, it's the looper timing. If they seem to meet properly then check your needle. Is your needle up into the needle clamp all the way? Try a new needle. Even a slight bend to the needle will not allow the loopers to meet and grab or deliver thread. You might check the tensions. Thread has to have some resistance in order for the loopers to do their job,
If your looper timing is off, find a sewing repair person to retime the serger. Don't try it yourself or put this repair off. If the loopers go further out of timing, they might hit something and replacement can be costly.
SOURCE: Sewing machine straight stitch is not straight
Hey. It's full out possible that you have it on the right setting...but concider this - the switcher inside the sewing machine could be broken (ie. It's moving to different stitches - but not the one you have the outside set for)
It happened to me (pc o crap singer model)
SOURCE: Bernina Activa 135 sewing machine
Hi , the pedal micro switch are stuck , you may visit fixya repair service just , (enter zip area), you can find sewing machine repairman near you
SOURCE: My Futura CE-150 beeps and stops sewing after only a few stitches
Look for the buttonhole lever, just in front of the presserlever, on the lefthand side of the machine. Pull it down and push it back to the top. Good Luck
SOURCE: my janome memory craft 9000 sews without pushing
Inside the foot control is a component called a supressor.......it is there to reduce or stop the "crackle" interference you may have on TV & Radio when using the machine.
It is not necessary for the functioning of the machine, but when it fails, or burns out, there is generally an acrid smell of burned plastic.....then it runs on by itself and you need to turn it off at the switch to stop it.
Best suggestion if you are not comfortable about opening electrical items, is to take it to a Janome service centre and tell them exactly what is wrong, as described above.. "a burned out suppressor, and the machine now runs by itself"
They ought to be able to do this for very little money really, it is a 2 minute job.......if it has been a while since the last service, you may wish to consider having it all done at the same time, depends on usage and budget in the end.
Let us all know how you get on.
www.bargainbox.com.au
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