Question about Bernina Sewing Machines

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I just purchased a Bernina 950 and it was working great got it home and it will not catch bobbin thread . Any ideas ?

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  • Bernina Master
  • 10,732 Answers

Hmm, not sure. Usually, not picking up the bobbin thread is a timing issue but if nothing has happened to the machine since it was tested.

Might try completely rethreading or try a different thread. Be sure to ALWAYS RAISE the presser foot when threading the top thread.

Posted on Apr 29, 2017

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Posted on Jan 02, 2017

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2 Answers

My Bernina 200 bobbin thread snagged and now the bobbin thread will not catch the top thread when I sew, thus, there are no stitches made in the fabric.


1. CHANGE NEEDLE.
2. ADJUST BOBBIN TENSION. MAKE SURE YOU ARE USING THE RIGHT BOBBIN FOR THE MACHINE. THE WRONG ONE WILL NOT ROTATE FREELY. HANG FROM FINGER AND BOB. SHOULD EXTEND ONE INCH WHEN ADJUSTED RIGHT.
3. ADJUST TOP TENSION. (START AT 3)4. EXTEND TWO INCHES OF THREAD FROM BOBBIN. HOLD TOP THREAD TO THE FRONT AND A LITTLE TO THE RIGHT.
5. TURN HAND WHEEL TOWARDS YOU. THE BOTTOM THREAD SHOULD COME UP FROM UNDER THE PLATE.
6. IF THE THREAD DOESN'T FEED FROM THE BOBBIN TO THE TOP OF THE PLATE THE TIMING IS OFF AND WILL NEED TO BE ADJUSTED.

Jan 02, 2015 | Bernina Sewing Machines

1 Answer

1080 manual


You may have the bobbin in upside down so the thread is going the wrong direction. Also, be sure you leave a tail of thread for the needle to catch

Jul 22, 2014 | Bernina Sewing Machines

1 Answer

Bernina virtuosa 150


Make sure you are turning the flywheel the correct direction.

Jul 15, 2014 | Bernina Virtuosa 150

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Bernina 1008 thread bunching on bottom


"Nesting or Rat's Nesting" on the bottom side of Bernina sewing machines (CB hook type) is generally the result of very loose top tension. If the problem is found in newer sewing machines such as machines made after 1986 (serial numbers beginning with 26xx xxxx), may have an older Bernina bobbin case in the machine. The problem with the older bobbin cases is that the rounded projection of the latch on the left side of the casing will catch thread, preventing easy thread escapement during the take-up lever cycling resulting in loops on the bottom side and or thread breakage, etc..
Note:....Timings and modified latch geometry's were applied to later models to allow for good thread escapement. Older Bernina cases cannot be used on newer machines but newer cases can be used on all CB hook Bernina machines.
Additionally, Chinese copies of the Bernina/Cerliani OEM bobbin are rampant and can cause sewing issues. Always ask for OEM Bernina cases.

Note the following trouble shooting logic:
1. The center tension disk that is visible through the thread slot in the top cover of most machines must be positioned exactly in the middle of the top cover slot. By loosening the fixing screws on the top tension mechanism, one can adjust the disk position to center.
2. It would be a very rare situation for the top tension to change whatsoever from the (red center marking) factory setting. The most likely cause of loose top tension under the normal center mark position, would be accumulated lint, thread, or a sticky substance between the disks. This would prevent the tension compression disks from applying an even tension on the sewing yarn (thread). Often this can be blown out with compressed air when the presser foot lever is lifted in the up position. In some cases, soft drinks and other sticky or corrosive liquids can find their way between the disks. In this case, the tension assembly must be removed, disassembled, and the disks cleaned and polished.
3. Check the facial surfaces of the bobbin case for corrosion, and sticky substances that prevents the thread from easily sliding over the bobbin case.
4. Check that the spindle of the hook body is not bent or warped, causing the bobbin case to wobble, thus creating an intermittent pressure on the hook race cover at the moment that the thread is trying to escape over the bobbin case finger. (Replace the hook body)
5. Inspect the undercut on the hook body spindle for thread wrappings and knots. This condition can cause the bobbin case to press hard against the hook race cover, hence hindered thread escapement .
6. Exceedingly tight bottom tension can cause some problems as well. ( If you don't know how to adjust Bernina bobbin cases to factory settings, please ask).
7. Hook timing, (loop lift) can be out enough to affect thread escapement. This is typical of newer machines made after 1986 since Bernina no longer made fixed timed machines like the earlier Swiss made models. The later made models have timing components that can slip under stressed machine mechanics.
SewTechnical Home ">

Feb 13, 2014 | Bernina 1008

1 Answer

Why won't my Bernina zig zag bobbin thread catch underneath; the top looks great.


have you tried changing the needle?
have you tried adjusting the top tension?

May 13, 2012 | Bernina Sewing Machines

1 Answer

My mother has a bernina 1008 and now that we have taken the bobbin casing out to clean it won't catch when threaded. Any ideas?


Are you threading the bobbin case correctly - the bobbin should rotate clockwise when pulling the thread out under the tension spring. Are you ensuring that the bobbin case is firmly clicked back into position when replacing it. Check your needle is OK. Did you remove the hook from the hook race when cleaning out - have you oiled the hook race ?

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1 Answer

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In checking I can either adjust the tenion screw and if that does not work, purchase a new bobbin case.

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Mono thread can develop a memory and curl itself around things. I hate the stuff.

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Bernina Bernette 600 Deco embroidery machine


It could be that there is a loose piece of thread, or some fluff which is obstructing the tension gauge. Try blowing around the theading area (or even run the hoover pipe near it to see if you can **** it out). I cleared mine by folding a piece of non fluffy material and rubbing gently between the tension dial and machine.

Good luck

May 19, 2008 | Bernina Bernette Deco 600

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