If the thread is properly tensioned the
top thread and the bobbin thread will
knot in the middle of the fabric layers.
If the bobbin thread is being pulled through
the top layer of fabric you need to decrease
the tension on the top thread by turning
the top tension knob counter-clockwise.
If the top thread is being pulled through
the bottom layer of fabric you need to
increase the tension on the top thread by
turning the top tension knob clockwise.
It is very important to make sure that the bobbin tension is properly set first
, see the
tension section for directions on setting the bobbin tension. As long as you have your bobbin tension
correct, you should be able to fix the tension by adjusting only the top tension. If you are unable to
fix you tension by only adjusting the top tension you may need to re-adjust the bobbin tension.
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Maintenance
Thread Tension
Increase Tension
Decrease Tension
Turn The Knob Counter-Clockwise
Turn The Knob Clockwise
Thread
Knot
Bobbin
Thread
Top Thread
Top
Fabric
Bottom
Fabric
Proper Tension
Too Much Top Tension
Too Little Top Tension
Too Much Bobbin Tension
Too Little Bobbin Tension