ADJUSTMENTS
The
thread
tensions
should
be adjusted according to the type and
thickness
of
both
thread and fabric. Turn the tension knobs referring to the numbers on the
dials;
turning
to a higher number
will
increase
the thread tension and to a lower number
decrease
it.
Thread
Tensions
underside
,4.®®
top side
® 1
\ © s
® 1
1. A balanced tension
(a)-(b) The needle threads lie on the
top side of the fabric (just like a row
of normal straight stitches) on the
upper looper thread, and just visible
in the lower looper thread on the
underside of the fabric.
(c)
The upper looper thread lies flat on
the top side of the fabric and locks
with the lower looper thread on the
edge of the fabric.
(d)
The lower looper thread lies flat on
the underside of the fabric and locks
with the upper looper thread on the
edge of the fabric.
2.
If the left thread (a) is too loose and
clearly visible on the underside of the
fabric, increase the left needle thread
tension and/or decrease either or both
looper thread tensions.
3. If the right needle thread (b) is too
loose and clearly visible on the under-
side of the fabric, increase the right
needle thread tension.
4.
If the upper looper thread (c) is loose and
pulled over to the underside of
the fabric, increase the upper looper
tension and/or decrease the lower
looper tension.
5. If the lower looper thread (d) is loose
and pulled up onto the top side of
the fabric, increase the lower looper
tension and/or decrease the upper
looper tension.
N.B.
If the thread tensions are too tight, the
fabric will pucker.
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