Tension Guidelines
Needle Tension
Looper Tension
3 - or 4 - Thread Seaming
It is easiest to become familiar with tension adjustments if you practice using different thread colors, that match to
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tension dials to a higher number to tighten the tension or to a lower number to loosen the tension performance.
The upper and lower looper threads should interlock
right over the cut edge of the fabric. (Diagrams A-3
and A-4)
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the fabric OR if the fabric edge curls up, the
upper looper tension is too tight and the lower
looper tension is too loose.
(Diagrams B-3 and B-4)
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underside of the fabric OR if the fabric edge
curls under, the lower looper tension is too tight
and the upper looper tension is too loose.
(Diagrams C-3 and C-4)
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stitching, either both loopers are too tight OR
the stitch width may be too wide for
lightweight fabrics. (Diagram D)
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A-4
B-4
C-4
Three-thread Seaming
Four-thread Seaming
A-3
B-3
C-3
D
(
8
Sew a test seam and, if stitches are visible from
the right side of the fabric (Diagram F), tighten
left needle tension. If the seam begins to pucker
or draw up lengthwise, the needle tension is too
tight. (Diagram G)
On the 4-thread stitch, if the inside straight stitch
forms loops on the back side of the fabric, tighten
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F
G
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