How do I adjust the tension on my brother bobbin?
The bobbin case installed in this machine can be adjusted, if necessary, to accommodate the bobbin tension for embroidering.
- Using a small slotted screwdriver, turn the slotted head (-) screw to adjust the bobbin case tension. …
- The thread tension is correct when upper thread slightly appears on the wrong side of fabric.
Why is my thread bunching underneath?
A: Looping on the underside, or back of the fabric, means the top tension is too loose compared to the bobbin tension, so the bobbin thread is pulling too much top thread underneath. By tightening the top tension, the loops will stop, but the added tension may cause breakage, especially with sensitive threads.
What is the correct tension for a Brother sewing machine?
The normal tension setting is 4.0. The upper thread and the bobbin thread should cross near the center of the fabric. Only the upper thread should be visible from the right side of the fabric, and the bobbin thread should be visible from the wrong side of the fabric.