Bernina Serger Owner's Workbook page 16

Adjusting Tensions, continued
Right Needle - Decreased Tension
Adjust the right needle thread tension lever to 2 (down) to decrease
the tension on the needle thread.
Serge the fifth piece of folded fabric, cutting off the fold.
Examine the sample. The needle thread forms large loops on the
back of the fabric.
Label, trim, and mount the sample.
Left Needle - Decreased Tension
Adjust the left needle thread tension lever to 2 to decrease the tension
on the needle thread.
Serge the sixth piece of folded fabric, cutting off the fold.
Examine the sample. The needle thread forms large loops on the back
of the fabric.
Label, trim, and mount the sample.
Both Needles - Increased Tension
Adjust both the left and right needle thread tension levers to 7 to
increase the tension on the needle threads.
Fold the piece of lightweight woven cotton fabric to 1½" x 4".
Serge the folded fabric, cutting off the fold.
Examine the sample. The lower looper thread is pulled to the front
of the sample and the stitch is puckering the fabric.
Label, trim, and mount the sample.
Return both needle thread tension levers to normal.
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