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Bernina 180 Bobbin Case Housing Loose

My bobbin case housing is loose. It moves back and forth causing the bobbin thread to bunch up. I removed the needle plate and the bobbin case. I can move the mechanism that holds the bobbin case with my finger. It doesn't turn around. I can make it click back and forth very slightly with my finger. How to I get in there to tighten it up?

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The housing you are pointing out is the rotary hook asm. This is suppose to have a little clearance there, the clearance allows for the lower thread to come up. In order to make the machine run smoother in that area, is to put a drop of the benina only oil

Posted on May 03, 2010

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Bernina activa 130 tension loose after needle breaking into bobbin area


Is it the bobbin tension that is very loose? Try tightening it. Also check that the bobbin has been installed in the bobbin case, turning the correct direction and that the bobbin tension is threaded properly.

Bobbin Tension How and Why Tension is Adjusted

Understanding Bobbin Tension

Understanding Thread Tension Threads

If it is the upper tension that is loose and creating "thread nests" under the fabric, the machine is either misthreaded or possibly the thread is not seated completely in the tension disk.

Remove the upper thread from the machine.
ALWAYS RAISE the presser foot and rethread the upper thread from the beginning--verify the thread path is correct.
Set the upper tension to the midway point between high & low number (the factory standard--although it may need tweaking later for your particular machine).

Retest your machine. Hopefully, the issue has been resolved. If not, it may need service.

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Oct 03, 2016 | Bernina Activa 130

1 Answer

My machine will not sew. New not used but a few years old. once thread goes down to bobbin it locks and you can hear the clutch disengage. without thread you can run the needle at full speed then it


There may be a small bit of thread or lint caught somewhere in the bobbin case or bobbin holder. Brush lint away from the feed dog area, being careful not to brush lint into the workings of your machine. If you have the manual, look up how to clean lint from the bobbin. If you don't have the manual, try just taking the hook out, if possible. Run a clean toothpick around the housing and then use a clean small brush to brush out any lint or thread pieces. Put one drop of sewing machine oil on the hook of the bobbin housing. Then use a thread to "floss" your bobbin case. Run a thread through the slot and wiggle back and forth to loosen any caught thread bits. Good luck. ps If this doesn't work, repeat. Sometimes after you turn the hand wheel a bit, another piece of thread or lint will work loose and can be cleaned.

Dec 06, 2014 | 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.
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Feb 13, 2014 | Bernina 1008

1 Answer

My bobbin threat is bunching and after a couple of inches, the top thread breaks.


Check that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder. The bobbin tension adjustment is the small screw in the plate on the bobbin case that the thread passes under as it comes off the bobbin and goes out.

Apr 13, 2011 | Bernina Artista 180

1 Answer

The thread is loose on the bobbin end when sewing...the top is fine, but the bottom is so loose and bunches up into a mess.


Make certain the bobbin is inserted correctly into the bobbin case. If it is, be certain the bobbin is wound tight. A bad wind will cause the loose threads you mentioned. If both of those options are all right, check your upper tension. Generally, it should be set at 3. Also, make sure the needle is inserted correctly...the groove on the face of the needle should be facing the front of the machine (it is actually a thread guide). And last, has the bobbin case been removed and cleaned? If not, this could lead to "messy bobbin threads." I hope one of these suggestions is THE one for your problem. Good luck!

Nov 14, 2010 | Bernina Sewing Machines

1 Answer

Re-curring loose bobbin case


According to the manual, this is a drop-in bobbin.

If the bobbin case came loose, the needle would probably hit it and brake.

Take the bobbin out.

Turn of the power and remove the needle plate (under the presser foot).

Raise the needle to it's highest position and lift out and reset the bobbin case into the shuttle. This should be in the maintenance section of the manual. The bobbin case should fit snug.

Make sure the thread is feeding from the bobbin, counter-clockwise and through the guides on the bobbin case.

For a rotary bobbin with a metal bobbin case.

Remove the bobbin case. Make sure the thread is feeding clock-wise and through the guide on the side of the bobbin case.

Raise the needle to it's highest position - this puts the hook at the lower left. Left the tab on the back of the bobbin case and slip the bobbin case back into the shuttle with the "arm" straight up. You may have to move the bobbin case a bit to the left or right for it to snap into place.

If the problem persits, take the machine back to the dealer - there should not be a charge for fixing this as it is brand new - keep your receipt and warranty information at hand.

Apr 24, 2010 | Singer 7442 Mechanical Sewing Machine

1 Answer

Will not sew


Check your bobbin compartment for loose thread and or debris. This often causes the thread not to combine properly. There is also a tensioner screw on the bobbin housing that can be tightened/loosened to adjust the tension, this may be the problem. Most machines have a removeable bobbin housing via clips or screws, to remove the assembly and clean.Or you can direct your queries to:
http://www.husqvarnaviking.com/us/2821_3079.htm

Mar 17, 2010 | Husqvarna Viking 1

1 Answer

I have a Bernina Virtuosa 155 and use it daily. Without


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

Oct 27, 2009 | Bernina 1008

1 Answer

Bernina 180 Bobbin case spinning


Its called the bobbin stopper. Pop off your needle plate by pressing on the marked corner. In the back on the left you will see a small allen screw which must have come loose. Position the bobbin stopper in place and tighten that screw. If it already is tight, loosen it and reposition the bobbin stopper in the notch and tighten it back up.
Good luck.

Oct 04, 2008 | Bernina Artista 180

2 Answers

The bobbin thread is loose and bunches up under the material i have a model 1030 and i dont remember where the tenson is


It is the dial to the right of the take up arm on top. If you go all the way to 10 and nothing happens then you'll need to take it to your nearest technician or Bernina dealership. Also its possible you may have put your bobbin in the bobbincase the wrong way. After putting the bobbin in the case and pulling the thread the bobbin should turn clockwise.
Good luck.

Nov 27, 2007 | Sewing Machines

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