Singer 1640 - Bringing up Lower Thread; Twin Needle Upper Threadin G and Sewing

BRINGING
UP
LOWER
THREAD
Raise
presser
foot.
Hold
needle
thread
loosely
with
your
left
hand.
Turn
hand
wheel
toward
you
until
needle
moves
down
and
then
up
again
to
its
highest
position,
catching
bobbin
thread
and
bringing
it
up
through
hole
in
needle
plate.
(Fig.
18)
To
prevent
thread
from
slipping
out
of
needle
when
you
begin
sewing,
pull
both
threads
out
about
6
inches
and
place
under
presser
foot
toward
rear
of
machine.
(Fig.
19)
TWIN
NEEDLE-UPPER
THREADING
AND
SEWING
1.
Attach
zigzag
presser
foot
if
not
already
on
machine.
2.
Follow
threading
instructions
for
single
needle
with
these
exceptions:
A
—
Place
thread,
matching
or
contrasting
in
color,
on
both
spool
pins.
B
—
Pass
threads
through
arm
thread
guide.
C
—
Down
around
tension
discs
with
one
thread
passing
between
the
back
discs
and
the
other
between
the
front
discs.
D
—
Treat
both
threads
as
one,
until
you
reach
the
needle.
E
—
Pass
one
thread
through
each
needle
eye.
(Fig.
20)
3.
Set
Zigzag
Stitch
Dial
in
middle
of
indication
marks
(Fig.
21)
otherwise
needle
will
break.
Turn
hand
wheel
slowly
toward
you
to
make
certain
twin
needle
dows
not
hit
needle
plate.
4.
All
normal
stitches
and
all
stretch
stitches
can
be
made
with
the
Twin
Needle.
—13—
Fg
21