Singer 20U-109 Instruction Manual - Page 23

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Zigzag Sewing Machine 3.18. Stitch Width Regulator The width of zigzag stitch is controlled with the spring biased stitch width regulating lever '1', Figure 24. Maximum zigzag width: 20U-109 / 109C / 309: 9.0 mm 20U-112 / 112C: 12.0 mm Do not make any needle position adjustment while the needle is in the fabric. 3.19. Zigzag Stitch Width Control To obtain minimum to maximum width (20U-109, 109C, 309: 9mm or 20U-112, 112C: 12mm) zigzag stitches, first loosen thumb screw '2' to permit the stitch width regulator '3' to return to its zero position 'A' and retighten thumb screw '2', according to Figure 25. Then loosen thumb screw '1', Figure 25, turn stitch width regulator '3' clockwise as far as it will go and while holding the regulator '3' in this position (see 'B', Figure25), retighten thumb screw '1'. You can now regulate the stitch width regulator within the range of zero to maximum. Instruction Manual and Parts List 4) Figure 24 Ca Figure 25 -22-

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Zigzag
Sewing
Machine
Instruction
Manual
and
Parts
List
3.18.
Stitch
Width
Regulator
The
width
of
zigzag
stitch
is
controlled
with
the
spring
biased
stitch
width
regulating
lever
'1',
Figure
24.
Maximum
zigzag
width:
20U-109
/
109C
/
309:
9.0
mm
20U-112
/
112C:
12.0
mm
Do
not
make
any
needle
position
adjustment
while
the
needle
is
in
the
fabric.
3.19.
Zigzag
Stitch
Width
Control
To
obtain
minimum
to
maximum
width
(20U-109,
109C,
309:
9mm
or
20U-112,
112C:
12mm)
zigzag
stitches,
first
loosen
thumb
screw
'2'
to
permit
the
stitch
width
regulator
'3'
to
return
to
its
zero
position
'A'
and
retighten
thumb
screw
'2',
according
to
Figure
25.
Then
loosen
thumb
screw
'1',
Figure
25,
turn
stitch
width
regulator
'3'
clockwise
as
far
as
it
will
go
and
while
holding
the
regulator
'3'
in
this
position
(see
'B',
Figure25),
retighten
thumb
screw
'1'.
You
can
now
regulate
the
stitch
width
regulator
within
the
range
of
zero
to
maximum.
4)
Figure
24
Figure
25
Ca
-22-