ALFA COVER Style Manual De Instrucciones página 47

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Balancing the thread tension
1. Set the tension dials as follows:
Far narrow-right (3 mm wide):
A. Center needle thread tension dial: 4
B. Right needle thread tension dial: 4
C. Looper thread tension dial: 4
Far narrow-left (3 mm wide):
A. Left needle thread tension dial: 4
B. Centre needle thread tension dial: 4
C. Looper thread tension dial: 4
Far Wide (6 mm wide):
A. Left needle thread tension dial: 4
B. Right needle thread tension dial: 4
C. Looper thread tension dial: 4
2. Check the tension balance by test stitching on the
same fabric and threads as actual garment
Fine-tune the tension as necessary.
Balanced tension:
The rows of stitches on the right side of the fabric are
straight and even. The looper thread forms a row of
square with diagonals.
(D Reverse side of the fabric @ Looper thread
®
Left needle thread @ Right needle thread
(A) lf the needle thread tension is too loase:
*The stitches on the right side are irregular and loose.
*There is a gap between head and tail of the looper
thread crossing points.
Tighten the needle thread tension, and/or loosen the
looper thread tension to correct it.
(B) lf the needle thread tension is too tight:
*The fabric puckers. Loosen the needle thread tension,
and/or tighten the looper thread tension to correct it.
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