Why does the thread in the bobbin break?

A dirty shuttle race, improper thread routing or incorrect thread tension can break the bobbin thread in a sewing machine. Unplug the sewing machine and check thread routing according to guidelines in your owner’s manual. Reroute the thread correctly if necessary.

What is the solution of thread breakage in bobbin?

Bobbin or Looper Thread Breakage

Use pre-wound bobbins. Tension too tight or bobbin over-running. Adjust bobbin case tension. Insert a washer or a spring to prevent over-running.

What are the cause of thread breaking?

The upper thread tension could be set too tight. Set the tension to the best thread tension setting or less. Make sure the spool of thread is installed correctly using the correct size spool cap for the size of spool. … Check that the bobbin is wound so that it about 80% full and that the thread is evenly wound.

How do I stop my thread from breaking on my sewing machine?

Sewing Machine Thread Keeps Breaking?

  1. TIP #1: NEEDLES. Check your needle is the correct size and not bent or damaged. …
  2. TIP #2: BOBBIN. …
  3. TIP #3: RE-THREADING. …
  4. TIP #4: THREAD QUALITY. …
  5. TIP #5: THREAD SNAGS. …
  6. TIP #6: CLEAN THROAT PLATE. …
  7. TIP #7: THROAT PLATE CONDITION. …
  8. TIP #8: DON’T PULL.
THIS IS EXCITING:  How do you set up a beginner sewing machine?

Why is my sewing machine suddenly jamming?

Often, your sewing machine will suddenly stop working due to a bent or broken needle which stops the thread from going through the fabric. The solution: Stop work and carefully inspect your needle for any deformities or breakage, and if you see any – replace it with a new one.

What tension should my sewing machine be on?

The dial settings run from 0 to 9, so 4.5 is generally the ‘default’ position for normal straight-stitch sewing. This should be suitable for most fabrics. If you are doing a zig-zag stitch, or another stitch that has width, then you may find that the bobbin thread is pulled through to the top.

What is the remedy when the upper thread breaks?

Remedies: Check the threading order and thread correctly. Adjust the tension disc. Replace blunt or bent needles.

How do you adjust the tension on a bobbin?

To tighten your bobbin tension, turn the tiny screw on the bobbin case a smidgen clockwise. To loosen bobbin tension, turn the screw counterclockwise. A quarter turn or less is a good place to start.