The thread tension is incorrect.

There could be several reasons why the tension won't set on the machine.
  • Check the machine is threaded correctly. Rethread the machine according to the instructions in the manual.
    Refer to "Upper threading" of  "Preparation" category.

  • Check the upper thread tension set.

  • Remove the bobbin and make sure it is threaded properly in the shuttle race.
    Refer to "Correctly installing a bobbin. " of  "Preparation" category.

  • If there is any loose thread or lint in the bobbin case, please clean them with the included cleaning brush.
    Refer to "Cleaning the Bobbin Case"  of  "General Information" category.

  • Check if the combination of needle size, thread size and fabric is incorrect. Be sure to use the correct needle and thread size for the fabric you are sewing.
    (Example: Denim-size 16 needle and 40-50 heavy duty thread)
    Refer to " Combination of fabric, thread and needle " of  "General Information" category.

If your question was not answered, have you checked other FAQs?

Have you checked the manuals?

If you need further assistance, please contact Brother customer service:

Related Models

AS1430S, AS2730S, BM-3500/2600, FS101, FS155, GS2700, GS2786K, GS3710, Innov-is 10, Innov-is 1500D/1500, Innov-is 15P, Innov-is 30, Innov-is 35P, Innov-is 400, Innov-is 4000D/4000, Innov-is 4500D, Innov-is 50, Innov-is 55P, Innov-is 900, Innov-is 950, Innov-is 955, Innov-is 980D, Innov-is 980K, Innov-is I / Innov-is 6000D, Innov-is Ie, Innov-is V7, JS1410, LS-2125/2160, LX27NT, QC-1000, XL-2120/2220/2230/2240, XL-2600/2620/2630, XL-5500, XL-5700

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