Necchi L234A, Instruction Manual, Page: 32 / 52

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4–Thread overlock
For all seams where stretch or give is needed, such as neck edges, side seams, sleeves, etc.
3–Thread overlock, wide (and narrow)
For sewing two layers of stretchy fabric or overcasting a single layer of light to medium fabric.
Use heavier threads in the loopers to create decorative edges.
Note
Use the right needle instead for a narrow stitch. Recommended thread tension settings within
brackets in the chart.
Stitch/Fabric
Thread Tension
Both 1.0 3 5-6 N - 3 3 4 4
Both 1.0 3 5-6 N - 4 4 4 4
Both 1.0 3-4 5-6 N - 4 4 4 4
Both 1.0 3 5-6 N - 4 4 4 4
Both 1.0 3 5-6 N - 4 4 4 4
Both 1.0 3-4 5-6 N - 4 4 4 4
Stitch/Fabric
Thread Tension
Left 1.0 3 5-6 N - 4 (-) - (4) 4 (5) 4-5 (4-5)
Left 1.0 3 5-6 N - 4 (-) - (4) 4 (5) 4-5 (4-5)
Left 1.0 3-4 5-6 N - 4 (-) - (4) 4 (5) 4-5 (4-5)
Left 1.0 3 5-6 N - 4 (-) - (4.5) 4 (5) 4-5 (4-5)
Left 1.0 3 5-6 N - 4 (-) - (4.5) 4 (5) 4-5 (4-5)
Left 1.0 3-4 5-6 N - 4 (-) - (4.5) 4 (5) 4-5 (4-5)