Question about Brother LS-2125 Mechanical Sewing Machine

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Threading seems to be too loose - Brother LS-2125 Mechanical Sewing Machine

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The most common cause is there is a build up of lint in between the tension discs, carefully pry them apart and brush out any lint or fluff. Also when you thread the machine through the tension pull the thread from each end to make sure the thread is going in between the tension discs.

Posted on Jul 02, 2009


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The tension my machine seems wrong. When I sew the stitching at the bottom of the material is right but the sewing on the top seems loose.

Tighten the top tension. However, if the bobbin thread is actually pulling up on the top of the fabric, the bobbin tension is too loose. Both top and bobbin threads should pull enough against each other that they meet in the middle of the fabric without causing puckering.

Another thing to remember. ALWAYS RAISE the presser foot when threading the top thread!


Jul 15, 2017 | Sewing Machines

1 Answer

Stiches are loose how to adjust the tension

Loose upper thread requires the top tension to be increased (higher number).

When threading the top thread, be sure to ALWAYS RAISE the presser foot while threading so the thread will seat properly in the tension disk.

If the bobbin thread is loose, then the bobbin tension needs to be tightened.

Understanding Thread Tension Threads

Mar 06, 2017 | Sewing Machines

2 Answers

Can't get tension adjusted. Top loose, botton thread comes up over top fabric

bottom thread is loose, tighten the tensioner in the bobbin, (you might have to loosen the top to balance.) make sure thread was properly routed.

threading of bobbin sewing machine pictures Google Search



Oct 13, 2015 | Brother Sewing Machines

1 Answer

Why does the bottom thread on my 185k Singer sewing machine keep tangling.

Your bottom thread looks like the top tension is too loose or not being fed through the tension disc.
1. While you thread do it with the pressure foot up. Make small pulls while threading to make sure there are no snags.
2. When you finish threading put the foot down. Check for resistance on the thread. There should be some; not excessive though.
3. Always start at four on tension and adjust as you need to.

Feb 26, 2015 | Singer Sewing Machines

2 Answers

Lowerlooper thread getting stuck in threading lever

Hmmm imagine that! Glad you found and shared a solution.

Aug 25, 2012 | Brother Sewing Machines

1 Answer

I have a White 7140 quilters sewing machine. I can't find the manual and I am having trouble threading it. The stiches are coming out loose on top, but ok on the bottom. I have tried adjusting the...

try and search by typing in your model number. I couldn't see it there but there are other white machine manuals there so maybe one will give you help with threading. It sounds like the bobbin thread is not under tension, usually if the top is loose it is the bottom thread which is not tensioned and visa versa.

May 30, 2011 | Sewing Machines

1 Answer

The thread on the right needle keeps breaking, the tension seems very loose and the wheel doesn't seem to add tension

It is very very important to follow the manual when threading the machine. One missed or out of place thread will throw the entire machine off. I know I had the same problem.

Apr 10, 2010 | White Sewing Superlock 2000 ATS Mechanical...

1 Answer

6022 necchi sewing machine

There is a site that has instructions with how to thread the machine properly. Click here for the threading section

Nov 03, 2007 | Necchi 3537 Mechanical Sewing Machine

1 Answer

My threading is too loose?

Thank you - fixed it completely... though you have to take the bobbin case out completely to access that screw. - Remove the 2 screws holding the metal plate with a nickel and remove the plastic piece over the bobbin case - there is a small metal lever on the lower left side that needs to be pressed down. You can then remove the bobbin case. There are 3 screws - the center one is the tension adjustment. It was painted green on my machine.  It appears that it is not a regular setting change, but a bad adjustment from the factory. So if you don't feel comfortable doing all that returning the machine for another will likely fix the issue.

Oct 15, 2007 | Brother XL-3510 Mechanical Sewing Machine

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