Balancing Needle Thread Tension - ALFA COMPAKT 100 Manual De Instrucciones

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Balancing Needle Thread Tension

Balancing Needle Thread Tension
The thread tension is adjusted depending on the
sewing materials, layers of fabric and sewing method.
The ideal straight stitch has threads locked between
two layers of fabric as illustrated.
q Needle thread (Top thread)
w Bobbin thread (Bottom thread)
e Right side (Top side) of fabric
r Wrong side (Bottom side) of fabric
For an ideal zigzag stitch, the bobbin thread does not
show on the right side (top side) of the fabric, and the
needle thread shows slightly on the wrong side
(bottom side) of the fabric.
t
Needle thread tension is too tight
When the bobbin thread (bottom thread) will appear
on the right side (top side) of the fabric, Loosen the
4
needle thread tension by moving the dial to a lower
number.
t Thread tension dial
y Setting mark
Needle thread tension is too loose
When the needle thread (top thread) will appear on
4
the wrong side (bottom side) of the fabric, tighten the
needle thread tension by moving the dial to a higher
number.
• Adjust bobbin tension
In some instances, you may need to adjust the bobbin
thread tension.
e
Turn the adjusting screw in the direction of w when
the bobbin thread tension is too tight.
w
Turn the adjusting screw in the direction of e when
the bobbin thread tension is too loose.
q Adjusting screw
w Decrease tension
e Increase tension
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