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Thread jams on the bobbin - Singer 7422

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  • cwarfield42 May 20, 2009

    Arg, I'm having this problem but the machine is threaded correctly. :

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Upper part of machine not threaded correctly. no needle tension = bunching underneath

Posted on May 04, 2009

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What to do to fix the bobbin thread from jamming up everytime


There are a couple of reasons that can cause this.
a. Raise the pressure foot. As you load the top thread give small tugs to check for snags. They must be stopped.
b. Once the top threading is done on top lower the pressure foot. Now, give a tug on the thread. Is the tension really hard or just average? You may need to lower the tension to stop the jamming of the bobbin thread.
c. Clean the bobbin area. Check the bobbin tension and adjust as you need to.
d. Put a drop of oil on the race. (Thing the bobbin case sits on)
e. As the bobbin hook (sharp thing) is rotating does the bobbin case move back and forth a lot. You may need to adjust the bar that is next to the bobbin case so it can't rotate. Usually you will need to move it forward.
SEE INSTRUCTIONS HOW TO ADJUST THE BOBBIN. TENSION OF UPPER AND LOWER THREAD MUST BE RIGHT.

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Nov 28, 2015 | Sewing Machines

1 Answer

Deco Bernina bobbin jammed, now bobbin won't work


remove bobbin and reinsert. Re thread needle . Make sure the right size of needle for the material. And check that there is not a wad of fluff under the feed dogs.
Best wishes

Aug 22, 2014 | Bernina Sewing Machines

1 Answer

Why is my bobbin thread jamming on viking juliet sewing machine


Be sure to clean out any stray fibers or threads in the bobbin area. Make sure the bobbin is smooth and doesn't have nicks or scratches.

Aug 02, 2014 | Husqvarna Sewing Machines

1 Answer

Machine jams after 4 or 5 stitches. Bobbin thread locks up.


try these suggestions
change the needle
make sure the thread doesn't come off the thread take up lever--this
can jam the machine
make sure the bobbin is turned the right way in the bobbin case--this
can cause problems if the bobbin is turned the wrong way
make sure the bobbin is not warped or damaged
make sure there are no burrs in the bobbin area or on the needle
plate

Oct 16, 2012 | Singer 8280 Mechanical Sewing Machine

1 Answer

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.


Aug 15, 2011 | Elna 2007 Mechanical Sewing Machine

1 Answer

The bobbin thread will not pick up. The machine had jammed and I forced the wheel and can't get bobbin thread to pick up. When I thread manually, I only get holes, no stitches. Is it a timing belt?


check your needle to see if it's bent---roll on flat surface to see if it roll correctly
on some sewing machines when the thread comes off the thread take up lever it can cause the machine to jam
also if the bobbin thread becomes tangled it can jam
check the bobbin area for lint or loose threads
try having a top thread tail & bobbin thread tail of 3-4 inches
try holding the top thread tail & turn the handwheel on the right side on the machine manually & put the needle down into the bobbin area & see if the bobbin thread will pick up that way

Sep 24, 2010 | White Sewing 2037 Mechanical Sewing...

1 Answer

The bobbin case sounds loose and the thread jams with the fabric and everything gets stuck.


That use to concern me too! I thought it signalled a problem, but my bobbin case has always been loose and that was not what was causing my thread and fabric jam. Usually what causes the jam is an incorrectly wound bobbin, wrong needle or old needle, old thread, or a slightly warped bobbin that is hard to see/detect. Change everything out--needle, thread, bobbin...this usually does the trick!

Mar 24, 2010 | Husqvarna Rose

1 Answer

Keeps getting jammed


Hello,
Give these solutions a try.

* Un-thread your machine and remove your bobbin. Clean any loose thread or lint out of your
bobbin case. Re-thread your machine, reinsert and re-thread your bobbin.

* Change your bobbin as there could be a nick along the edge of your bobbin spool that’s catching your thread as you sew.

* When you start to sew a seam, Hold the upper and bobbin thread tails back and out of the way as you sew your first couple of stitches. This will keep them from getting jammed in your machine.

I hope this helps.

Dec 29, 2009 | Sewing Machines

1 Answer

Freesia 415 - bobbin thread is jamming up will


1. Put in a new needle
2. Take the thread off the top of your machine and rethread the top. Make sure the presser foot is in the up positon when you thread your machine because that is when the tensions discs separate so your thread gets deep into the unit where it belongs. The tension dial (the small dial) should be on 4 or 5.
3. Inspect the bobbin area. Do you see the thread laying across the bobbin itself? You should alway see the thread laying across the bobbin in that model. That tells you that you've threaded the bobbin case correctly. The thread must be pulled into the metal guide of the bobbin case, from approximately the 6 O'clock postion to the 7 O'clock position.
4Never turn the handwheel away from you with the 415. You'll notice that the take up lever is of a more open design. If you turn the handwheel backwards (away from you) the thread will jump out of the lever and jamming will result.

Oct 11, 2009 | Husqvarna Freesia 415

1 Answer

Bobbin thread jam


You can remove the thread jam by moving the hand wheel back and forth. Remove the bobbin case and bobbin.Unthread and remove the needle.Rock the handwheel back and forth. Don't be rough but you will need to exert a little pressure to get this thread to come out. What you are doing is cutting the thread which is locked inside the hook race.
sewman7

Sep 03, 2008 | PfaFF Creative 7570

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