Tension Settings: Lower Looper Thread Tensions - Bernina Overlocker L 890 Workbook

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TENSION SETTINGS: LOWER LOOPER THREAD TENSIONS

Firm fabric such as muslin, 10" x 10"
80/12 ELX705
4 Spools Serger Thread (B, R, G, Y)
4-Thread Overlock Stitch #1
C 11
Lower Looper Tension Too Tight
Top Side
Lower Looper Tension Too Loose
Top Side
Bottom
Side
Bottom
Side
16
B E R N I N A O V E R L O C K E R W O R K B O O K
Compare your sewn samples to the images in the Stitch
Optimizer and consider the recommended corrective
measure for each issue.
Lower Looper Tension Too Tight
1. Adjust the lower looper tension to the highest setting
of 9.
2.
Fold the fabric in half to 5" x 10" and sew the seam
along the fold, trimming off a slight amount.
3. Look at the stitch. When the lower looper is too tight,
the upper thread (blue) is pulled to the back.
4. Label the sample "Lower Looper Tension Too Tight".
Lower Looper Tension Too Loose
1. Now adjust the tension setting to the lowest setting of
1 and sew the seam on the opposite side.
2.
Examine the stitch formation. When it is too loose, the
lower looper (red) thread is pulled to the front.
3. Label the sample "Lower Looper Too Loose".
4. Touch clr to put the lower looper setting back to the
default of 4.