MO-735 Overlock
Triple Cover Stitch or 4‐Thread Cover Stitch
Look at the stitching on the back of the
stitch sample.
If the needle thread (green, blue or yellow) is
looping on the bottom, tighten the thread
tension for that needle.
Look at the top cover stitching.
If you see any of the looper (brown) thread
on top, loosen the needle tension.