Question about Bernina Virtuosa 160

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I have tried several steps to correct my Bernina 160's bottom thread tension; too loose. I did occur after I cleaned out bobbin case & hook race,

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Buy to loose do you mean big loops on the botom? If so fallow these steps.
Usaly big loops on the botom of the fabric means that the top is not threaded coreccty. I would sugest threading the top thread again all the way to the needle. After you have done that pull on the thread and lift and lower the presser foot. There should be tension when it is down and no tensoin when it is up. I allway do this before I sew on a machine. If you do not have tension on it when the presser foot is down you did not get ithe thread in the tension unit. If you have tension when it is up then your machine needs a upper tension release adjustement.
Hope this helps friend.
Other problems could be a small peace of broke needle it the race area(inspect this close).
If you adjusted your bobbin tension this may need to be reset.

Posted on Mar 17, 2011

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One other common mistake is to try and thread the top when the foot is down. You should only thread the top when the foot is up, otherwise there is a chance the thread will not lay correctly in the tension discs when you start to sew and consequently you get a poor start with loops underneath at the beginning of your run. By all means drop the foot when you're threading the needle, but always ensure it's up when threading the tension unit and takeup arm etc.

Posted on Oct 13, 2011

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1 Answer

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.

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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

I have Bernia 180. The bottom thread is puckering. Top thread is perfect. I cannot find help in manual. Please help


Check that the bobbin is inserted turning the proper direction in the bobbin case and that the thread is threaded correctly through the tension control on the bobbin case.

Make sure the upper thread is threaded correctly. The factory standard upper tension setting is midway between high & lower number although this may need to be tweaked for your particular machine.

If the machine is still pulling the bobbin thread too tight, you can try tightening the upper thread tension. If it still isn't resolved, you may need to loosen the bobbin tension.

You might also want to check the presser foot pressure on your machine. That generally needs adjustment when changing from thicker to thinner fabric and vice versa.

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Oct 02, 2016 | Bernina Sewing Machines

2 Answers

Looping stitches


Hello Shirley, I suggest you make sure the machine is threaded correctly. If you have a factory manual, that would be a help. It sounds as though the needle thread is not threaded through the take up arm and/or take up arm spring. The needle thread tensioner might be too loose.

May 13, 2015 | Bernina Virtuosa 160

1 Answer

My tenshone is out of order.


Try these suggestions
1. Change the needle--use a needle that's for the fabric being sewed
2. Rethread the machine--top --make sure to use every thread guide
3. try a different bobbin--make sure bobbin is inserted correctly into the bobbin case
& make sure the bobbin is turned the correct way in the bobbin case
4. make sure the thread has not come off the thread take up lever
5. Clean under the needle plate & in the bobbin area for lint or threads
6. Check to make sure the bobbin is not warped or damaged
7. Make sure the bobbin case is correctly in the machine,, if it's a top loading bobbin you may need to have the bobbin case checked to see if it's damaged or see if the hook and hook race has a problem
8. Make sure the top thread tension is on the correct setting for the fabric being sewed.
9.Also could be a timing problem, and the machine would need to be checked.

Dec 03, 2014 | Sewing Machines

1 Answer

Bernina 1080 Solution for "back spin"? Top thread suddenly becomes very loose. Top thread forms loops under cloth being sewn.


Try these suggestions
1. Change the needle--use a needle that's for the fabric being sewed
2. Rethread the machine--top --make sure to use every thread guide
3. try a different bobbin--make sure bobbin is inserted correctly into the bobbin case
& make sure the bobbin is turned the correct way in the bobbin case
4. make sure the thread has not come off the thread take up lever
5. Clean under the needle plate & in the bobbin area for lint or threads
6. Check to make sure the bobbin is not warped or damaged
7. Make sure the bobbin case is correctly in the machine,, if it's a top loading bobbin you may need to have the bobbin case checked to see if it's damaged or see if the hook and hook race has a problem
8. Make sure the top thread tension is on the correct setting for the fabric being sewed.
9.Also could be a timing problem, and the machine would need to be checked.

Jun 05, 2014 | White Sewing 915

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

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

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 ?

Jan 22, 2012 | Bernina Sewing Machines

2 Answers

My Activa 130 makes a clacking sound when I sew. It is 10 years old. What do you think is wrong? Can I repair this or do I need to take it to be serviced?


I would take it to a Bernina repairman, nice machine and well worth getting it serviced by a qualified technician.

I presume that you've tried the obvious things like a new needle and checking the bobbin case is in correctly.

Sep 03, 2011 | Bernina Activa 130

1 Answer

Tension


I'm assuming the thread is looping on the bottom. If this is not the case, ignore the rest of this.
Perform a tension test. Tension assembly test. To do this test. Pull the thread through the tension assembly and test it to make sure the tension is working correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or something in the middle. Raise the presser foot and pull the thread through the tension. It should pull easily!! Lower the presser foot and pull the thread. It should pull noticeably harder.)
If it doesn’t work this way then you probably have a piece of thread or lint stuck inside the tension discs. To remove it, turn the tension to 0 zero and raise the presser foot.Using a small screwdriver, open the space between the discs and spray with canned or compressed air. The stuff should come out. Do the tension test again to make sure you got everything and then try sewing again.
sewman7

Aug 02, 2008 | Bernina 1008

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