Question about Brother LS-2125 Mechanical Sewing Machine

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Top thread to loose how to adjust

Top thread is too loose making big loop

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  • Brother Master
  • 7,365 Answers

Here are 2 free manual for the machine choose which one is correct
for the model, when the top thread is loose you have to adjust the
bobbin tension which should be covered in the manual,, if the
information is not in the manual then the machine would have to
be taken to a repair shop for the adjustment
http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_LS_2125_EN_272.PDF

http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_LS_2125i_EN_1628.PDF

Posted on Jan 07, 2013

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Posted on Jul 27, 2008

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SOURCE: Thread looping onto itself

when i try to pick up the bobbin thread it does not pick it up at all i even try threading it all back over many times can yuo help me please

Posted on Oct 06, 2008

kent581
  • 87 Answers

SOURCE: My bobbin thread keeps looping up on the bottom,

try this:
Tension:
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on top and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
Thread test
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no matter how much thread you pull, your thread is good. If that your machine passes that test, we can go to step 2. If not, try different spool of thread, do the same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Step 2:
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Jamming bobbin case:
If it is damaged from turning out of place once, it could have rough spots on it that makes the thread hang on it, and keeps making it turn over and over. Use a finger nail board (fine sanding) and smoothall rough spots. Then reset the bobbin case taking care to put the notch in the bobbin case in alignment with the proper spot in the machine (basically 5 o’clock) when looking at the round area where the bobbin case goes

Posted on Mar 20, 2009

louislevel_2
  • 374 Answers

SOURCE: Thread looping on top and bottom of fabric

hi! there,
on this condition,you can avoid wasting time and material try on this, the problem is your set up of tension thats why.,but you should follow upper theading. see figure,c978815.jpgthis just sample of exact threading,next bobbins set up see fig.the thread should be clockwise rotation on winder5a00a72.jpgfollow this set up,and upon inserting be sure
you have clean feed dogs and shuttle race free from fabrics and threads chips.set dial tension to #3 to #4 and stitch dial to #12.then try this set.and you can watch on you tube sewing. try this stuff on internet address type www.youtube.com then on search box type sewing machine,have enjoy and have a nice day.don't forget to rate me,

Posted on Apr 14, 2009

  • 55 Answers

SOURCE: Difficulty adjusting tension to avoid bobbin looping

it sounds like your bobbin tension is too tight. to adjust bobbin tension, remove bobbin case (remove needle plate first) and adjust bobbin tension screw on side of case until bobbin thread has a slight resistance as you pull it through the bobbin case.

this will be trial and error until you get best result. you should always try and match top and bottom threads. if the top thread is quite thick you may have continue to increase needle thread tension until balanced.

scott

Posted on Jul 26, 2009

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2 Answers

I cannot get the tension correct - big loops on the back with Gutterman all-purpose thread. Have cleaned tension discs and adjusted bobbin tension screw. Checked for correct bobbin and needle thread.


bird nesting ( big loops under material) is from the needle thread tension being too loose
thread the machine as if threading the needle but before threading the needle pull on the thread , there should be resistance to thread feed
if not the tensioner plates are not adjusting properly

Sep 17, 2017 | Sewing Machines

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How do i adjust my consew 105 so the stitches do not loop on the bottom?


If the thread is looping under the fabric, it is a top tension issue.

Make sure you are using a new needle and that the needle/thread/fabric are compatible.

Verify it is threaded correctly and that the thread is firmly seated in the tension disks.

If the top thread is still looping under the fabric, then the upper tension is too loose.

...

Nov 07, 2016 | Consew Sewing Machines

2 Answers

What am I doing wrong when the stitching on top of the material is ok and straight and the backside is knotting?


wrong bobbin tension , but amazingly its actually easier to adjust the top threads tension to compensate for it , use your tension knob to slowly adjust , try an inch , slowly adjust try an inch , and so on to get a top and bottom thread tension to match , this will need to be adjusted for each major change in fabric (aka , knits to woven )

Aug 17, 2016 | Sewing Machines

1 Answer

Tension is loose underside


Loops appear on the surface (top side) of the fabric?
Reduce the tension by turning the upper tension control dial to a lower number. If the loops still appear on the surface of the fabric after you adjust the upper tension, the bobbin thread may be too loose. In this case, turn the screw clockwise, being careful not to over-tighten the screw, approximately 30-45 degrees to increase bobbin tension. After you adjust the bobbin thread, adjust the upper thread to match the bobbin thread.
Make sure you reset before your next project.

Apr 26, 2013 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

Cannot adjust my tensions. book is too vague...need help despratly!!!


Hi Karen:

Take a deep breath, count to 10... then slowly let it out. Ok. now. Most industrial machines are basic mechanical machines. Not much to go wrong with them. But they are so basic the manufacturers figure you would almost automatically know how to thread and adjust them.

There are a few things you can check.

I assume you got the needles when you got the machine. Did you know that some machines require left or right twist on the thread? Yes, I know... "Huh?" So first lets make sure your needle and thread match well.

Cut off a length of thread abotu 18 inches long. Take out your needle and thread the eye of the needle. Now hold one end of the thread up... does the needle slowly go down the thread? If it goes fast the eye is too big for the thread. If it slips and stops... the eye is too small for the thread. In either case you need different needles for this thread.

Next, In your instruction book... really study those pictures. Almost all machines require that the bobbin be inserted with the thread unspooling off the bobbin in a certain direction. Insert it wrong and it does strange things with tension and your loop.

Next... make sure you have threaded it correctly. This means lifting the presser foot lever while threading... make sure you are in between those tension discs. (I've had a machine that required that I wrap it 1.5 times around a tension disk... so make sure you are really studying those diagrams.)

Remember. Loops on bottom of material mean top tension is too loose. Loops on top of material means top tension is too tight and perhaps the bobbin tension needs adjusted (loosen top tension first!)

I hope you got the servo motor instead of the clutch motor.

Good luck

Sep 14, 2012 | Tacsew Gc66 Sewing Machine

1 Answer

Top thread is knotting up on the bottom even if I switch out thread or bobbins. seclector is on A length is on 2 and width is on o


Hello,

It sounds to me as if your top thread tension is too loose or your bobbin thread tension is too tight. The top thread is tangling underneath and is probably making big loops. Consult your owners manual on how to adjust thread tensions.

Good Luck!
Chris
glfi.com

May 22, 2011 | Sewing Machines

2 Answers

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,


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.

Mar 17, 2011 | Bernina Virtuosa 160

2 Answers

I have the Brother ls2125i and LOVE the machine...in the middle of sewing, it started making very big loops on the bottom stitch and they do not catch the thread from the needle. Is it the tension?...


Here are some things to try:
Big loops are actually easier to solve usually. 1st know this: Loops on bottom means the top is too loose or the bottom is too tight. With loops that big its probably the top is too loose. 1st look in tension disks, there is likely a chunk of thread in there. A toothpick is handy to dig it out (the flat kind) 2nd make sure that the thread is getting between the disks when threaded. 3rd Make sure the thread is in the take up lever (the thing that moves up and down in front and not the needle bar or any part of the needle bar.) If neither, then the bobbin case could have a burr on it and the thread is hanging on that burr. Also the bobbin case may be in wrong. I hope this helps
Tension:
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on top and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension
Thread test
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no matter how much thread you pull, your thread is good. If that your machine passes that test, we can go to step 2. If not, try different spool of thread, do the same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Step 2:
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Kent

Mar 22, 2009 | Brother LS-2125 Mechanical Sewing Machine

2 Answers

Bottom thread is very very loose during stitching, looped up


Looping on bottom:
Great description, that helps a lot. Big loops are actually easier to solve usually. 1st know this: Loops on bottom means the top is too loose or the bottom is too tight. With loops that big its probably the top is too loose. 1st look in tension disks, there is likely a chunk of thread in there. A toothpick is handy to dig it out (the flat kind) 2nd make sure that the thread is getting between the disks when threaded. 3rd Make sure the thread is in the take up lever (the thing that moves up and down in front and not the needle bar or any part of the needle bar.) If neither, then the bobbin case could have a burr on it and the thread is hanging on that burr. Also the bobbin case may be in wrong. I hope this helps
Kent581

Mar 03, 2009 | Husqvarna Viking 1

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