23
.
NEEDLE
-
TO
-
HOOK
RELATIONSHIP
(
FIG
.
28
)
1
.
Adjust
the
timing
between
the
needle
and
the hook
as
follows
:
1
)
Turn
the
handwheel
to
bring
the
needle
bar
down
to
the
lowest
point
of
its
stroke
,
and
loosen setscrew
①.
*
Adjusting
the
needle
bar
height
2
)
Align
marker
line
"
A
"
on
needle
bar
②
with
the
bottom
end
of
needle
bar
lower
bushing
③,
then tight
setscrew
①.
*
Adjusting
position
"
A
"
of
the
hook
3
)
Loosen
the
hook
setscrews
,
turn
the
handwheel
,
and
align
marker
line
B
on
ascending
needle
bar
②
with
the
bottom
end
of
needle
bar
lower
bushing
③.
4
)
After
making
the
adjustments
mentioned
in
the
above
steps
align
hook
blade
point
⑤
with
the
center
of
needle
④.
Provide
a
clearance
of
0
.
04mm
to 0
.
1mm
betw-
een
the
needle
and
the
hook
,
then
securely
,
tighten
the
hook
setscrews
.
*
Note
that
the
type
of
hook
to
be
substituted
for
,
when
replacing
the
hook
,
shall
be
in
the
sewing machine
of
original
assemblage
.
Fig
.
28
①
②
③
④
⑤
A
A
C
B
B
6
32
24
.
ADJUSTING
THE
HEIGHT
OF
THE
PRESSER
BAR
(
FIG
.
29
)
1
.
Loosen
setscrew
①,
and
adjust
the
presser
bar height
or
the
angle
of
the
presser
foot
.
2
.
after
adjustment
,
securely
tighten
the
setscrew
.
Fig
.
29
①
