Question about Brother LS-2125 Mechanical Sewing Machine

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Lower bobbin cant locate my manaual, and am having problems threading the lower bobbin, when i think i have it, it then knots up and wont turn

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6ya6ya
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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Thread getting stuck in the bottom.

Mine is also doing this, but it has an auto tension and doesn't have those numbers on it. It is the 7422 Advance. I just bought this machine and have yet to be able to do anything with it. Very disappointed. Taking it back ASAP and never buying Singer again. Machine locks up for nothing, have to turn off and back on and it works, then the thread bunches up at bobbin and I have checked everything. And it was suppose to be able to accomodate a little bulk, (doing a quilted christmas stocking), however the fabric will not feed and it just starts to bunch up. Good luck

Posted on Jun 18, 2008

  • 399 Answers

SOURCE: I have a Brother SE-270D

its the problem of the timing belt in your machine its extra loosen or extra tightned or is slightly came out of its position or finally broken.
as the machine is proper just missing the proper speed as it should be .
it is running continuosly as you stated.
check the timing belt and make it proper if its worn out and needs replacement this is how its done

There is an adjusting screw on the right side of the machine head. Follow the motor bracket to the machine head and loosen that big old screw or bolt which will raise or lower the motor giving you slack to remove or replace the belt.

feel free for further queries
thanks

Posted on Sep 19, 2008

kent581
  • 87 Answers

SOURCE: Upper thread knots up with bobbin thread when sewing a stich

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 mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, 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.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
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 toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
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 18, 2009

  • 1 Answer

SOURCE: thread knotting around bobbin case

hello, I had the exact same problem and could not find the solution until i took my machine to my sewing sensei and i solved my tedious problem. It was actually not a tension problem at all but a threading problem. Make sure you have threaded your bobbin correctly and that when you pull on the bobbin thread that the bobbin turns the right way. (mine must spin anti clockwise to work)  Make sure that when you pull up the bobbin thread using the needle that it is not over the feed dogs connective bar but under it. A big problem when the thread gets caught around the bobbin case wheel is that the thread is looped around the feed dogs once and that causes the thread to get caught around the bobbin wheel. In conclusion, thread the bobbin correctly and read over your instruction book before spending the money to get it fixe in s shop.

Posted on Mar 31, 2009

  • 201 Answers

SOURCE: needles keep breaking & bobbing wont feed thru

First try taking your bobbin case right out of the machine (not sure if this model has a top loading or front loading bobbin, but your manual will help you here) and floss out the tension slot with a piece of strong thread. Don't use waxed dental floss, but non-waxed would work okay. (The bobbin case is the piece that the bobbin sits in.) Look around while you have the machine open and remove any fluff and thread you can see - TURN MACHINE OFF BEFORE DOING THIS! Replace bobbin case. Replace bobbin and make sure it "clicks" into the tension slot.

Then unthread the top of the machine, clean the tension disks by passing a folded dollar bill (or any paper money, depends on what country you are in) through the disks in the direction you thread the machine. Do this several times. Re-thread making sure you follow the correct thread path.

Make sure the needle plate is on firmly.

If after all that it still won't work, I'm sorry to say that it sounds like you have a misaligned needle bar. This commonly happens after you have a major thread snaffoo and needle breakage. The needle gets caught in the thread knot, pulls to the side and breaks but if it gets seriously caught it can pull the needle bar out of place. You cannot put the needle bar back in place yourself - it's a job for the workshop. Don't sew on your machine until it is fixed. The noise you are hearing is likely to be the needle striking against the needle plate or even the bobbin. Your timing will probably need re-setting too and this needs to be done by a qualified technician.

If you really need to sew before you can get your machine into the workshop, and if you can move the needle position on your machine by pressing a "sideways" button of some sort, you could try to get the needle in the centre yourself using this feature. This will not help if it is the timing that is the major problem.
Pam M.

Posted on May 03, 2009

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2 Answers

I have juki 1541industrial machine . It started sewing upside down . Instead of nice stiching on top show side it on bottom. Any ideas


This is caused by the tension between the bobbin and needle threads being out of balance. If the knots between the stitches are on the bottom side, then you need to tighten your needle thread tension a little at a time until the knot is in middle of fabric. The reverse of this is if the knots are on the top, then either your bobbin tension is too loose or your needle thread tension is too tight. If this occurs, then loosen your needle thread a little at a time to see if knot goes down in middle of fabric. If it does not, then you need to increase the tension on your bobbin thread. This done by taking bobbin case out and tighten the small screw located in the middle of the spring on the side of the case. You only need a slight, steady pull on the bobbin thread - the more you put on the bobbin, the more you are going to have to put on the needle thread.

Feb 13, 2015 | Juki Sewing Machines

1 Answer

How to set the tension


The carrier and bobbin are removed. Place the thread in the carrier with the thread dispensing counterclockwise. Place the thread between the metal pieces (tension). let the carrier hang from your finger and bob it slightly. It should extend one inch. If it doesn't then you can adjust it by turning the small screw slightly until it does what I said. Now, replace this assembly. The top tension you can start at three. The sewing should be an even pull between the upper and lower thread. If the thread knot is in the center of the material it is right. If the knot is under the material then raise the upper tension. If the knot is on the upper material then you should lower the upper tension. The key is to start with the bobbin tension correct and adjust the upper tension until the knot is in the center of the fabric

Oct 26, 2014 | Sewing Machines

2 Answers

Why does my thread knot on the back when stitching in place?


Several things to try:
Pull thread tails (both bobbin thread and upper thread) straight back and when you lower the presser foot, make sure they are held down straight back. This may or may not be enough to solve the problem, but it is simple to try, and often works. You might want to hold the thread tails while you start sewing.
Use a starter--folded piece of fabric scrap about an inch long--and begin sewing oink middle of starter. Push the fabric you want to see right up to the starter and keep sewing from the starter right onto your project without lifting the presser foot or cutting the thread. When you finish sewing, cut the little piece of thread between the starter and your project.
Before lowering presser foot, use wheel to lower your needle once and then pull up bobbin thread to top surface of your project. Then hold both bobbin and upper thread tails, lower your presser foot, and begin sewing. Release the thread tails after a few stitches.
Hope this helps. Those nasty "thread nests" are a real pain.

Jul 13, 2014 | Janome Sewing Machines

1 Answer

Lower bobbin thread gets tangled


try changing the needle --make sure the needle is the right one
for the fabric being sewed
try a different thread
make sure the bobbin is not over filled
make sure the bobbin is turned the right way in the bobbin case
make sure the thread has not come off the thread take up lever

Oct 04, 2012 | Brother XL-3500

1 Answer

Bobbin Thread is "birdnesting"


Get out the manual and refer to the maintenance section for cleaning the machine.

Especially the bobbin area. You want to make sure the area around the bobbin case is free of lint and thread.

Use a new bobbin and re-thread the machine, with the presser foot UP.

Install a new needle, again according to the directions in the manual. Installed incorrectly can lead to mis-stitching.

If the problem persits, the timing may need adjusting.

This should be done by the sewing machine tech for Kenmore.

Sewusa.com has a guide for this in the repair section, but you could end up with more problems.





Apr 29, 2010 | Kenmore 15202 Mechanical Sewing Machine

2 Answers

Singer 301a sewing machine does not sew for more than 2 secs...top thread just knots into a huge ball on bottom of fabric...everything is threaded correctly and all tension set well...next step is trash...


Recheck the top thread and bobbin tension for equal balance of thread when sewing. The knotting of thread problem is usually because the tensions are too tight or too loose and/or thread may not be properly threaded. Another reason is when the bobbin thread is wind imbalanced it will cause the thread to knot-up when sewing. This problem is notorious when the bobbin is winded within the bobbin case on some machines. The bobbin thread need to be wind smoothly in the bobbin to avoid this problem.

Jan 24, 2010 | Singer Sewing Machines

1 Answer

Husqvarna Vicking - The bobbin thread is knotting


Check that it is threaded correctly (both top and bottom) making sure that the upper thread is in the takeup lever. Watch the needle as you slowly turn the handwheel counter clockwise (toward you) and the needle point touches the fabric (make sure presser foot is down). Is the thread still relatively taunt? If it is loose, the upper thread tension unit does not have enough tension. Check the areas where the thread goes and make sure you remove any loose threads or fluff which could be inhibiting the tension discs from closing over the thread. If the tension unit still is not tightening enough, the tension unit may need to be replaced or the circuit board replaced. If everything is ok in the upper thread area, now look at the bobbin area. With no fabric, watch as the needle enters the bobbin area. Does it go down and the upper thread catch the bobbin thread and pulls it to the surface? Check for anything preventing the bobbin thread from being pulled up to the surface through the needle plate. If you have still not been able to resolve the problem suggest you take it to an authorized husqvarna viking dealer for service. You can locate a dealer near you by visiting the husqvarna viking website and clicking on the Dealer link on the left-hand side of the page - http://www.husqvarnaviking.com

Good luck.

Dec 04, 2009 | Husqvarna Viking 1

1 Answer

Lower Bobbin not threading


the thread will not catch the bobbin and the feeder will not turn

May 17, 2009 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

Upper thread knots up with bobbin thread when sewing a stich


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 mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, 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.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
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 toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
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.

Mar 16, 2009 | Sewing Machines

2 Answers

Bobbin continues to pose problem - knotting thread underside of fabric,


In 99% of all problems with "bird's nesting" or "knotting" it is an issue of the thread coming out of the take up lever (at threading guide #3) (from the spool; through the first thread guide at #1 down to #2 and up to # 3) when the thread comes out of the take up lever, the machine can not regulate the thread and it floods the machien with thread and wraps itself around the bobbin case. OR! Your tension is too loose. Raise it. Your machine should preform perfect at tension #4 unless you are using speciality threads or fabrics.

ALWAYS be in the habit of threading your machine with presser foot up so that while threading between paths 1 and 2 you are certain to have the thread pass throught the tension disks.

This will happen on a $50.00 machine or a $5,000 machine. The thread needs to be regulated.

USE GOOD THREAD!

Thanks,

Bonnie

Oct 25, 2008 | Kenmore Drop-In Bobbin 16231 Mechanical...

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