Question about Bernina 1008

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Bernina 1008 sewing machine making huge clumps of loops on underside of fabric. have tried moving screw on bobbin in two opposite directions without a sign of improvement.

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Hi: You have threaded the machine incorrectly. Rethread the machine with the presser foot up to the needle, pull the thread (loose) and drop the presser foot while pulling thread, thread should get tighter, then thread needle and machine will work fine. Make sure the top tension is set at where you normally have it, probably about #4 or #5

Posted on Jan 08, 2009

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My bobbin isn't working properly it clumps up...


Basic Tips for All
  1. Always turn the handwheel TOWARDS you (counter clockwise) as turning it in the opposite direction (away from you, clockwise) may knock the timing out requiring repair from a service center.
  2. Always be sure your presser foot is in the DOWN position before sewing. Sewing with the presser foot in the up position will cause your thread to tangle and your bobbin to jam.
  3. Change needles regularly (after 16 hours of use) as dull/weak needles can cause damage to your machine and fabric. Only use SINGER needles on your SINGER sewing machine.
  4. Always be sure you are using the correct bobbin for your machine. Class 66, Class 15 and Class 15J bobbins look very similar. However, using the incorrect bobbin class in your machine can cause damage.
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May 22, 2015 | Brother XL-5340 Mechanical Sewing Machine

1 Answer

When I sew, the stitching is loose with large loops on the underside of the fabric making the bobbin thread slide out easily. How do I fix that?


Lift the pressue foot off the fabric. Hold the thread spool with one hand and lightly pull the thread hanging out the back of the needle. This should seat the tread into your top tension discs properly. Now try sewing again. If it still throws loops, you either do not have your machine threaded correctly or your tension on top is set to zero.

Sep 01, 2014 | Bernina Sewing Machines

2 Answers

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

Loose top thread bernina 1008, tension problem but no solutions yet...


Are you sure you are getting the top thread between the tension discs? You should be able to tell the difference when you lower the pressed foot.

Jan 27, 2013 | Bernina 1008

1 Answer

I am learning free motion quilting. I either get the bobbin thread showing on top or when I lower the tension the top thread shows on the bottom. This problem seems to fluctuate also. What am I doing...


Try tightening your bobbin tension a little, and then readjust your top tension again for consistant tension. Also if your not running the machine fast enough while your moving the fabric, you might have you bobbin thread looking like a taught thread on the bottom. Make sure you use a small needle, like a #11 or a #10. The smaller the hole the needle makes, the less of the thread you will see on the opposite side. Especially if you are using contrasting colors.

May 11, 2011 | Bernina 1008

1 Answer

I am totally new to machine sewing and I have a Husqvarna Model 400, its been working perfect then suddenly when sewing the thread from underneath (the spool side) is just coming out in huge clumps, the...


When you say "the spool side" I assume you mean the bobbin. There are a couple of reasons why this could be happening. First re-thread your upper thread with the presser foot up and check to see if the top thread is firmly in the tension disc. Usually when you have looping of thread on the underside of your fabric, it is the upper thread that is out of whack. Just the opposite of what you would think! When you're sure the top thread is right check your bobbin to make sure that's wound tight and not "mushy." When you start by wrapping the thread around the bobbin by hand and then put it on the winder to fill it, it is not tight enough so the whole bobbin winds too loose. This can cause clumps underneath. The last thing to check is that the bobbin thread is caught in the tension slot in the bobbin case and that there is no stray threads in the bobbin case opening to cause trouble. Hope this helps. Good luck. You have a great machine!

Sep 10, 2010 | Husqvarna Sewing Machines

1 Answer

I have a Bernina 130, the thread from the bobbin is coming out with huge loops, the top thread looks great, but turn over the fabric and you have a mess. Any advice is welcome.


Usually if your bobbin thread is loopy it's because the TOP thread is not threaded right. Try threading it again with the presser foot UP and make sure to get the thread between the upper tension discs. It's just the opposite of what you would think.....if the bobbin thread is loopy, the top thread is threaded wrong, if the top thread is loopy, the bobbin is threaded wrong. Good luck!

Aug 20, 2010 | Bernina Activa 130

1 Answer

My bobbin housing seems to be messed up. I follow all the directions in the manual, but nothing helps. My bobbin stitches are looping on the underside, my machine keeps breaking needles. I'm just trying to...


Ok, if the bottom thread is looping (bottom of fabric) try adjusting your UPPER tension.

Make sure that your thread isn't catching on anything before it reaches your needle, a small snag can cause needles to break.

Jan 12, 2010 | Singer 118 Mechanical Sewing Machine

1 Answer

Bernina 1008 bobbin tension problem


Double check that your needle is the proper one for your machine, and that it is in properly. It sounds like it is not picking up the thread properly. Tension problems usually have more to do with threading, thread or needle problems than with bobbin problems. Also check your bobbin is unwinding in the proper direction for your machine. Most machines unwind the bobbin thread, turning clockwise. Set your screw back to the factory settings, and give the machine a good cleaning as well. Lint can cause this to happen as well, if it builds up enough to interfere with the needle and the hook action. Double check that your upper thread is threaded properly as well. I suspect your needle is in backwards however.

Jan 08, 2009 | Bernina 1008

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