Question about PfaFF Tiptronic 2040

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Main motor jammed due to stuck bobbin threads

This is a recurring problem today. I cannot see any threads and have no clue how to remedy as the instruction book says NOTHING about this. Please help. I have had this machine about a year and a half and have only just recently started to use it. The first time this happened I was able to quickly remove a caught thread, This time, I have spent an hour on it to no avail. I have never had this problem with any of my other machines (Berninas), just with my two Pfaffs. Very disappointing for an expensive machine.Thank you.

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If you are unable to get any stitches at all then it could be your hook basket has spun out of position and it needs to go to a repair shop.
Hopefully it is just a matter of cleaning out the upper tension discs from any lint or thread that is in there. (Make sure the presser foot is up when threading so the discs are open and the thread gets down into them completly and that the tension dial is not set too low or on zero).
I hope this helps, good luck!

Posted on Jan 31, 2009

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Elna 2007 sewing machine breaking upper thread in bobbin unit. It will be going along fine then the thread will snap. thread tension on 1. zigzag stitch. Thread passing through upper machine OK, but...


Is your top thread tension on 1? this sounds way too loose, should be 4 or 5.
This is a horizontal top loading bobbin machine isn't it like the Janomes?

Do you have a manual for it? It sounds to me like the top thread is too loose and as it is pulled down and around the rotary hook there is no tension on it to pull it back up through the fabric and form a stitch which is then causing it to jam. Then once youve gots bits of thread in there, its just jamming and jamming. Cleaning out the bobbin holder as you described is good, you may need to do it again and ensure all bits of thread are out of it.

I think you need to revist all the threading up and ensure that the top thread is under tension, try number 5. Also check that bobbin is correctly wound nice and smoothly, then loaded into the bobbin holder correctly so that the thread is coming off the bobbin spool in the right direction, ie thread needs to come off the bobbin, then reverse direction in a "v" shape, usually in the direction of the back of the free arm. And that the thread has been clicked into the tension spring fully, put the thread into the slot of the tension device and press down on it with your finger tip until you hear it click into tension.

Also double check the take up lever, if the thread has slipped out of this, it will jam up for sure.

If you don't have any manual for this then try www.sewusa.com, there is good troubleshooting tips and threading diagrams for lots of makes and models.

Hope this helps you, persever, its most likely threading/tension issues and can be overcome with the right settings.


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