Singer 20U33 - Needle Location in Throat Plate

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
ADJUSTMENT:
1.
Turn
machine
pulley
over
toward
you
until
needle
bar
is
at
its
lowest
position.
2.
Remove
screws
and
lift
off
arm
top
cover.
Loosen
the
zigzag
triangular
cam
shaft
collar
set
screw
and
slide
collar
toward
front
of
machine.
Check
whether
the
two
zigzag
triangular
cam
set
screws
(with
center
line
aligned)
are
located
parallel
to
the
bearing
face
of
the
zigzag
stitch
Tegulator
fork.
3.
If
the
triangular
cam
set
screws
are
not
located
parallel
to
the
bearing
face
of
the
stitch
regulator
fork,
loosen
arm
shaft
(horizontal)
worm
gear
set
screws
and
turn
arm
shaft
worm
gear
as
required
until
the
triangular
cam
set
screws
are
in
either
one
of
the
two
positions
shown
in
Fig.
6.
Then
securely
tighten
arm
shaft
worm
gear
set
screw.
4.
Check
rith
a
dial
gage
(Fig.
11)
to
see
whether
the
needle
is
still
making
sidewise
movement
while
in
the
fabric
and
below
throat
plate,
and
if
necessary,
readjust
as
instructed
above.
CHECK:
Zigzag
Triangular
Cam
Set
Screw
To
Be
Par
all
el
---\✓
---
Fig.
6
TO
ADJUST
NEEDLE
LOCATION
IN
RELATION
TO
NEEDLE
HOLE
IN
THROAT
PLATE
To
Be
Parallel
--'{
---
1.
Fit
needle
to
needle
clamp.
(Make
sure
the
needle
is
not
bent.)
2.
Set
needle
position
selector
on
"center"
and
stitch
width
regulator
for
straight
stitching.
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