22.
NEEDLE-TO-HOOK
RELATION
1
* Set
the
needle to
hook
relation In
the
following way:
1. Bring
down
the
needle bar to
the
lowest
point
when
the needle is coming
down
through
the
center
of
the
needle hole on the
throat
plate.
2.
Loosen
needle
bar
connection
screw
0>
adjust
the
height
of
the
needle
bar.
(Setting
the
needle bar)
3. Insert the part
"1"
of timing gauge Q into the gap between the bottom end of needle bar 0 and throat plate
0.
4.
Retighten
the
needle
bar
connection
screw
to
adjust
the
position
of
the
sewing
hook.
(Setting
the
hook)
5. Loosen setscrew 0 of
the
hook sleeve by the bar spanner supplied with the machine.
6.
Rotate
the
driving pulley in
the
correct direction
until
the needle starts to go up from its lowest point.
7. Insert
the
part
"2"
of
the
timing gauge
into
the
gap between
the
bottom
end of
the
needle
bar
and the
throat
plate, where the
bottom
end of the needle
bar
touches
the
top
of the part
"2"
of
the
timing gauge.
8. Aligh blade point 0 of the
sewing
hook with the center of
needle©,
and make adjustment so that a clearance of approx.
0.5mm
(1/64") is
provided
between the
needle
and the blade point of the hook. Then,
securely
retighten the
setscrew
of the
hook
sleeve.
(NOTE):
If stitches are skipped, lowerthe needlebar by approx. 0.5mm (1/64") from the timinggauge
"1".
23.
ADJUSTION
THE
BOBBIN
THREAD
WINDER
H
Loosen screw 0 to make
adjustment
so
that
the
clearance
between
bobbin
thread
winder
pulley
©
and belt © becomes approx. 1mm (33/64") when
pulley
O is
apart
from
the
belt.
If,
however,
the
belt
touches
the
pulley,
adjust
the
tnesion by tension pully 0 to decrease the deflec
tion
of
the
bell.
And
if
the
belt
still
touches
the
pulley,
increase
the
clearance
to
more
than
1mm
(3/64'^).
24.
ADJUSTING
THE
SPEED
TRANSMITTER
i
i
I
*
Adjustment
of
the
position
of
the
belt
shifter
When
the
hand
stop
crank
is
turned
down
to
the
low
speed
position,
loosen screw 0
and
allow
the
belt
to
move
onto
low-speed
pulley
0,
moving
the
position
of
belt
shifter
©.
*
Adjusting
the
stopper
screw
Perform adjustment by stopper screw 0 so
that
belt shifter 0 does
not
cause
the
belt
to
come
off
high-speed pulley © during high
speed
operation.
-7
-
From the library of: Superior Sewing Machine & Supply LLC
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