Question about Brother LS-2125 Mechanical Sewing Machine

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Brother Industrial Machine Tension

I have an industrial brother sewing machine (model DB2-B705-103) & wheni sew the top thread is fine but the underneath has lots of loops & when i pull the thread out of the machine it is quite tight & needs to be pulled with force from the underneath.

I have no manual for this machine & am not sure how to adjust the tension on this - or if this is a bobbin/bobbin case problem?

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  • Anonymous Mar 21, 2014

    Industrial sewing machine manual

  • Anonymous Mar 28, 2014

    i have the same thread weight on both.. but still a lot of loops in my thread underneath and not even able to see the bobbin thread on top

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This is an answer to another person with a similar complaint. Try the suggestion below, it may fix the problem.

From your description it appears that you have tried tension settings on the upper tension control adjustment knob without success.
Check that the bobin tension is adjusted correctly by taking out the bobin complete with the spool.
Pull the cotton thread and it should be a smooth light pressure if the tension is correct. If it is tight to pull or pulls freely then adjust the tension screw which is found on the outside of the bobbin. The screw is very small and requires a minature size screwdriver. The adjustment will only be a slight turn of the screw one way or the other to obtain the correct tension(depending if it was loose or tight).
Once this is set reinstall the bobin and tread up the machine, hopefully with the upper tension set at approx."2" the machine will sew correctly.

Posted on Nov 30, 2008

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