– 131 –
3) Adjust so that the blade pont of nner hook
4
algns wth the center of needle
5
, and that
a clearance of 0 mm s provded between the
front end of the drver and the needle as the
front end face of drver
6
receves the needle
to prevent the needle from beng bent. Then
tghten setscrew
1
of the drver.
4) Loosen setscrew
7
of the shuttle, and adjust
the longtudnal poston of the shuttle. To do
ths adjustment, turn shuttle race adjustng
shaft
8
clockwse or counterclockwse to
provde a 0.05 to 0.1 mm clearance between
needle
5
and the blade pont of nner hook
4
.
5) After adjustng the longtudnal poston of the
shuttle, further adjust to provde a 7.5 mm
clearance between the needle and the shuttle
by adjustng the rotatng drecton. Then
tghten setscrew
7
of the shuttle.
Apply a small amount of oil to race
section
9
and oil wick
!0
, and use the
sewing machine after an extended pe-
riod of disuse or cleaning the periph-
ery of hook portion.
1) Turn the handwheel by hand. When needle
bar
1
has gone up, adjust so that lower
marker lne
2
engraved on the needle bar
algns wth the bottom end of the needle bar
bushng, lower
3
.
2) Loosen setscrew
1
n the drver. Open nner
hook pressers
2
to the rght and left, and
remove nner hook presser
3
.
At this time, be careful not to let inner
hook
4
come off and fall.
1-3. Adjusting the needle-to-shuttle relation
4
3
2
1
3 3
relation between needle and engraved lines
0.05 to 0.1 mm
7.5 mm
5
4
7
8
0 mm
0 mm
1
5
4
6
9
!0
!0
cAutIon
:
turn oFF the power before starting the work so as to prevent accidents caused by abrupt
start of the sewing machine.
1
2
3
