Singer 281-30 - NEEDLE BAR AND BUSHING SETTINGS; Needle Positioning vs. Throat Plate;Feed Dog; Setting Lower Needle Bar Bushing; Setting Needle Bar Height (No Timing Mark)

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
POSITIONING
NEEDLE
IN
RELATION
TO
THROAT
PLATE
AND FEED
DOG
(MACHINES 281-22
AND
281-24)
NEEDLE
HOLE
NEEDLE
BAR
FRAME
Fig.
39.
Positioning
the
Needle
(front
to
rear)
on Moch i
ne
s
281-22
and
281-24
Fig.
40.
Correct
Setting:
Needle
Bar
Bushing
t1,i
I
ii
a
l
~,
..
..:;.
/,:,
~'--"'--
CLAMPING
NEEDLE
STOP
·-
SCREW
Needle
should
not
contact
surfaces
of
throat
plate
or
feed
dog.
Needle,
needle
bar
and
needle
bar
frame
may
be
positioned
forward
or
backward,
after
loosening
pinch
screw,
shown
in
Fig.
39.
To
adjust,
set
feed
eccentrics
for
longest
stitch,
as
instructed
on
page·
13.
Insert
needle
correctly
in
needle
bar.
Remove
face
plate
and
slide
plate.
Loosen
pinch
screw
and
move
needle
bar
frame,
as
required.
Securely
tighten
pinch
screw
and
replace
all
ports
previously
removed.
SETTING
THE
LOWER
NEEDLE
BAR BUSHING
ON
COMPOUND
FEED
MACHINES 281-22 AND 281-24:
The
lower
needle
bar
bushing
is
integral
with
the
needle
bar
frame
and
does
not
require
separate
setting.
ON
ALL
OTHER
MACHINES:
Gouge
distance
from
throat
plate
seat
to
bottom
of
lower
needle
bar
bushing
is
2.599
inches.
Raise
or
lower
needle
bar
bushing,
as
required
to
obtain
correct
hejght
setting,
ofter
loosening
bushing
set
screw
shown
in
Fig.
40.
SETTING
THE
NEEDLE
BAR
HEIGHT
(without
using
timing
mark)
Machine
281-5:
Remove
bed
raising
plate.
All
Machines:
Remove
face
plate,
slide
plate
and
throat
plate.
When
need
le
bar
is
at
its
I ow
est
po
int
(during
rota-
tion
of
machine
pulley),
the
gouge
distance
from
throat
plate
seat
to
needle
stop
in
needle
bar,
as
shown
in
Fig.
41,
is
- - -
0.866
inch
for
Machine
281-24
1.031
inches
for
all
other
Machines.
!
THROATPLATE
~-
__
.
________
J
__
_
To
set
needle
bar
height,
loosen
the
needle
bar
c I
amping
screw
shown
in
Fig.
41.
Roi
se
or
lower
needle
bar
as
may,
be
required.
Securely
tighten
clomp-
ing
screw.
Replace
oil
ports
previously
removed.
16
SEAT
,
~
0.866"
(281-24)
~------..----
--
~:·:~~:•f
::RS
Fig.
41.
Setting
Needle
Bar
at
Correct
Height
{Using
Gouge
Distance)
When
replacing
face
plate,
make
certain
that
screw
holes
in
gasket
align
with
screw
holes
in
face
plate,
to
ovoid
injury
to
gasket
and
subsequent
oil
leakage.
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