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Elna 664 Bottom Thread loose - Baby Lock Eclipse Serger

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Make sure bobbin is loaded correctly and unwinding in the correct direction. It does make a difference. Do a test seam. If not improvement....

Loosen top tension. Do a test seam to see if that helps. If it does, loosen some more until you have a balanced stitch.

Finally... if neither of those really help. Look on the bobbin case for the tension "spring" (it is flat) with two tiny screws. One holds it on... the other tightens or loosens tension. Tighten the tension on 1/4 turn. Do a test seam. Etc., etc., etc.

The only time one ever changes the bobbin tension is when they are either using substantially larger or substantially thinner thread.

Good luck.

Posted on Nov 30, 2012


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