Singer Centurion 121D - Page 43

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
NEEDLE BAR FRAME
DRIVING
LINKAGE
ADJUSTMENTS
CONT'D
5.
Remove
compound
feed
fittings
(throat
plate
and
feed
dog),
and
replace
with
con-
ventional
throat
plate
(with
needle
hole) Fig.
2.
6.
Position
needle
bar
frame
assembly
to
center
needle
into
hole
of
throat
plate
and
tighten
pinch
screw
"B".
7.
Replace
conventional
throat
plate
with
compound
feed
fittings,
(throat
plate
and
feed
dog) Fig. 3.
l
4
Throat
Plate
/
(Conventional)
3
4
1
2
FIG. 2
Throat
Plate
(Compound
Feed)
Feed
Dog
(Compound
Feed)
FIG. 3
8.
Set
feed
dog
as
shown
on
pages
10
and
11
with
one
exception.
"Lengthwise
Set-
ting"
In
this
case.
set
machine
at
zero
stitches
per
inch
and
position
feed
dog
nee-
dle
hole
central
with
needle.
Then
proceed
with
balance
of
"Lengthwise
Setting".
9
Set
stitch
length
to
14
stitches
per
inch
in
both
forward
and
reverse
feed
direction.
10
Manually
rotate
hand
wheel
slowly
Try
to
centralize
needle
into
feed
dog
hole
in
both
maximum
forward
and
maximum
reverse
feed
direction.
If
not
central,
loosen
pinch
screw
"A"
and
rotate
slide
block
adjusting
screw
clockwise
as
desired
and
retighten
pinch
screw
"A".
Repeat
as
often
as
required
to
centralize
needle
into
feed
dog
hole.
41