Setting the Thread Tension
You may need to change the thread tension, depending on the fabric and thread being used.
Proper Thread Tension
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 only the bobbin thread should be visible from the wrong side of the fabric.
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- Many decorative stitches and satin stitches are designed so that the upper thread wraps to the back slightly for a more attractive finish.
Upper Thread is Too Tight
If the bobbin thread is visible from the right side of the fabric, the upper thread is too tight.
Touch 
to loosen the upper thread.
- If the bobbin thread was incorrectly threaded, the upper thread may be too tight. Rethread the bobbin thread. (Setting the Bobbin)
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Upper Thread is Too Loose
If the upper thread is visible from the wrong side of the fabric, the upper thread is too loose.
Touch 
to tighten the upper thread.
- If the upper thread was incorrectly threaded, the upper thread may be too loose. Rethread the upper thread. (Upper Threading)
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