Operation Manual

Correcting the
Thread
tensions:
The thread
tensions
can be
set from —5
to +5.
The
tension is set
at the
minus
range
or plus
range
according to
the
seam
appearance.
Towards +
= stronger
tension
Towards —
= weaker tension
Chainstitch
The
thread
tension of
needle A is
too
weak. The
blue
tension must be
turned
towards
+.
Note:
For
2-thread
overedge
seams
please
see
page
27.
3-thread
overedge
seam (wide)
The thread
tension of
needle B is
too
weak.
The
pink thread
tension
must be
turned
towards
+.
3-thread
overedge
seam
(narrow)
The thread
tension
of
needle C is too
weak. The
pink thread
tension must be
turned
towards
+.
3-thread
overedge
seam
The
right
looper thread
is too
tight
(green
thread
tension)
or the
left
looper
thread is
too loose
(yellow thread
ten
sion).
It is
possible
that
both
tensions
are
incorrectly set.
Adjust
tensions accordingly.
22