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Rolled Edges
Narrow Hem 3
The upper
and lower
looper threads
c
b
should lock together on the rolled fabric
edge. Adjust the same as 3 thread overlock.
See pages 55-58.
Rolled Hem 3
c
The upper
and lower
looper threads
b
should lock together with the needle thread
on the underside of the rolled fabric
a
edge. If upper looper thread
rolling to the underside, loosen upper
looper thread tension (yellow) and tighten
lower looper thread tension (green).
Rolled Hem 2
The lower looper thread
encases the
c
rolled fabric edge and locks together with
the needle thread
a
on the fabric
underside. If lower looper thread
not roll the fabric loosen lower looper
thread tension (green)
2 Thread Overcast
Balanced Tension
Model 686 only
The needle thread
should resemble a straight
a
stitch on the topside
of the fabric. It will lock
1
with the lower looper thread
The needle thread
should lie flat in a V-shape
a
on the fabric underside
.
2
The lower looper thread
should lie flat on the
c
topside of the fabric and lock with the needle
thread
on the fabric edge.
a
Needle thread is too loose.
If the needle thread
a
is pulled up over the fabric
edge to the topside of the fabric, decrease the
lower looper thread tension (green) and/or
increase the needle thread tension (blue or red).
Lower looper thread is too loose.
If the lower looper thread
c
the fabric edge to the underside of the fabric,
increase the lower looper thread tension (green)
and/or decrease the needle thread tension
(blue or red).
b
is not
does
c
on the fabric edge.
c
is pulled down under
59
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