B) Adjusting the front thread controller spring
Loosen set screw (11) and turn spring stop (10) to the left to increase
the
action
of thread take-up spring (7) and to the right to reduce the
action
of this
spring.
After the
desired
setting of the spring has been
established,
tighten set screw (11).
C) Adjusting
take-up
spring
tension
I. Slightly
loosen
nut (4) and also set screw
(5).
II. To adjust the
tension
of the rear thread take-upspring(1)
place
a
screw
driver into the slot of the take-up spring slot
(6)
and turn to the left
to tighten the spring tension and to the right to loosen same. After
the
desired
tension
has been
determined,
tighten set
screw
(5).
III. To adjust the
tension
of the front thread take-up spring
(7),
loosen
two
set screws (9) in collar (8) turning same to the left to tighten and to the
right to loosen it. Upon determining the desired tension of this spring,
tighten set screws (9) and also nut (4).
ADJUSTING
THE
HEIGTH
OF
THE
NEEDLE
CLAMPS
I.
Set
stitch
length
to
shortest
stitch.
II.
Turn
handwheel until needle bar has descended to the lowest point of
its
travel.
4.1mm
in
LTW-27B
4.4
mm
in
LSW-27BLK
Fig.
29
2
mm
Fig.
30
18
From the library of: Superior Sewing Machine & Supply LLC
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