5.
HOW
TO
ADJUST
THE
SYNCHRONIZER
(Attaching
the
synchronizer)
1,
Attach
the
synchronizer
to
the
handwheel.
2.
Let
the
machine
perform
thread
trimming
action
and
adjust
the
position
of
the
synchronizer
by
loosening its setscrews 0 so
that
the
handwheel
stops
with its
two
white
maloing
spots
O
surrounding
in
the
middle
a
red
marking
spot
0
engraved
on
the
machine
arm.
(Notes) Accurately position it
through
your
trial sewing.
o
w
6.
ATTACHING
THE
NEEDLES
*
Switch
"off
the
motor.
Use Sg X 1906 needles
for
Specification A and DP x 5
needles
for
Specifications
S
and
G.
1.
Turn
the
handwheel
until
the
needle
bar
has
come
up
to
the
highest
point
of
its
stroke.
2. Loosen needle clamp screws 0 and pick up two needles O
in
the
way
that
their
recesses are facing
outwards.
3.
Insert
the
needles
into
the
needle
clamp
as
far
as
they
wall go.
4. Tighten needle clamp screws 0 firmly.
9.
INSERTING
A
BOBBIN
IN
A
BOBBIN CASE
1.
Hold
a
bobbin
in
the
way
that
it
seems
being
wound
clockwise
and
put
it
in
the
bobbin
case.
2.
Pass
the
thread
through
thread
path
O in
the
bobbin
case
and
draw
the
thread, and the thread will
be
brought
to
thread
hole
0
via
the
tension
spring.
*
Make
sure
that
the
bobbin
revolves
in
the
direction
of
the
arrow
when
you
draw
the
thread.
7.
HOW
TO
TAKE
OUT
THE
BOBBIN
CASE
1.
Lift
latch
O
and
take
out
the
bobbin
case
and
the
bobbin
together.
2.
Hold
the
bobbin
case
by
latch
raised,
put
it
into
the
shaft
in
the
hook
correctly
and
release
the
latch.
8.
WINDING
THE
BOBBINS
(SINGLE
BOBBIN
WINDER)
9
1.
Take
the
thread
end
from
a
thread
spool,
pass
it
through
the thread guides as 0 , © and 0 and wind it several
turns
round
the
bobbin.
2. Tilt bobbin presser O permitting
the
thread winder pulley
to
touch
the
running
belt.
3. Adjust screw 0 to wind a
bobbin
about
80%
of
its
capacity;
turn
the
adjusting
screw
clockwise
to
increase
or
counterclockwise
to
reduce
the
amount
of
thread
to
be
wound.
4.
If
the
bobbin
is
wound
unevenly,
adjust
it
by
moving
the position of tension bracket 0 to the left or the right.
5.
When
the
bobbin
is filled
up,
the
bobbin
presser
auto
matically releases
the
thread
winder pulley from
the
running
belt.
(See
P.
10
for
a
twin
bobbin
winder)
- 3
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