FEED
ECCENTRICS
(Continued)
The
following
stitch
number
feed
eccentrics
are
available
under
No.
39540
B-4,
-5, -6, -7,
-8,
-
9,
-
10,-11,-12,-13,-14,-15,-16,-18,-20,-22.-24,-26,-28,-30,-32,
-
34,-36,
-
40.
Only
one
eccentric
is
supplied
with
each
machine.
Additional
eccentrics
may
be
ordered
separately.
To
order
an
eccentric,
use
No.
39540
B
with
a
minor
number
suffixed
to
indicate
approximately
the
number
of
stitches
desired.
Example:
11
39540
B-10".
SETTING
THE
NEEDLE
With
the
throat
plate
(A,
Fig.
3)
assembled
in
position,
the
needle
arm
(B)
should
be
set
so
that
the
needle
enters
the
center
of
the
slot
in
the
throat
plate
and
at
high
position,
the
point
of
the
needle
should
be
set
7/
16
inch
above
the
top
surface
of
the
throat
plate
(Fig.
3).
This
can
be
accomp-
lished
by
loosening
screw
(C),
reposi-
tion
needle
driving
a;rm
as
required
and
retighten
screw.
Remove
the
throat
plate.
SETTING
THE
LOOPER
Fig.
3
The
looper
(A,
Fig.
4)
should
be
inserted
in
the
looper
holder
(B)
until
its
shank
contacts
the
looper
bar
(C)
and
should
be
set
so
the
flat
side
of
the
blade
is
parallel
with
the
looper
bar.
Tighten
screw
(D).
The
looper
holder
(A,
Fig.
5)
should
be
set
·
on
the
looper
bar
(B)
so
that
the
point
of
the
looper
is
5/64
inch
to
the
right
of
the
centerline
of
the
needle
when
the
looper
is
at
its
extreme
right
posi-
tion
(Fig.
5).
The
point
of
the
looper
must
barely
clear
the
back
of
the
needle
as
it
passes
to
the
left.
This
can
be
accomplished
by
loosening
screw
(
C,
Fig.
5),
reposition
looper
holder
as
required
and
retighten
screw.
The
needle
must
also
clear
the
backside
of
the
looper
on
the
downstroke
of
the
needle.
The
setting
as
outlined
in
the
first
paragraph
gives
the
maximum
amount
of
needle
clearance
behind
the
looper.
To
decrease
the
clearance
and
eliminate
skipping,
loosen
screw
(c.
Fig.
5)
and
move
holder
to
the
rear
and
then
loosen
screw
(D,
Fig.
4)
and
move
looper
point
forward
to
just
clear
the
needle
as
it
moves
to
the
left.
Retighten
screws.
SETTING
FRONT
NEEDLE
GUARD
Fig.
4
The
front
needle
guard
(D.
Fig.
5)
should
be
set
as
high
as
possible
without
interfering
with
the
looper
and
clear
the
closest
contacting
surface
of
the
needle
by
approximately
•
003
inch.
This
can
be
accomplished
by
loosening
screws
(E.
Fig.
5),
reposition
front
needle
guard
(D)
as
required
and
retighten
screws.
SETTING
REAR
NEEDLE
GUARD
The
rear
needle
guard
(F,
Fig.
5)
should
be
set
as
high
as
possible
without
interfering
with
the
needle
thread
loop
and
deflect
the
needle
•
002
to
•
005
inch
at
the
point
of
con
tact.
6
From the library of: Superior Sewing Machine & Supply LLC
