Operation Manual

Just
right.
Upper
looper
thread
pulled
to
Lower
looper
thread
pulled
to
under
side.
top
side.
Left
needle
thread
loose
and
Right
needle
thread
loose
and
visible
on
under
side
of
fabric,
visible
on
under
side
of
fabric.
Increase
left
needle
thread
Increase
right
needle
tension
and/or
decrease
either
tension.
or
both
looper
threads.
hi
Fig. 2
Increase
upper
looper
thread
Increase
lower
looper
thread
tension
and/or
decrease
lower
tension
and/or
decrease
upper
looper
tension.
looper
tension.
Fig.
4
13