– 103 –
2) Loosen setscrew
1
n the drver. Drawng bob-
bn case openng lever hook
2
toward you,
open t to the rght and left untl bobbn case
openng lever
3
comes off.
At this time, be careful not to let shut-
tle
4
come off and fall.
3) Adjust so that the pont of shuttle
4
meets the
center of needle
5
, and that a clearance of 0
mm s provded between the front end face of
drver
6
and needle as the front end face of
drver receves needle to prevent the needle
from beng bent. Then tghten setscrew
1
.
4) Loosen shuttle race screw
7
, and adjust the
longtudnal poston of the shuttle race. 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 shuttle
4
.
5) After adjustng the longtudnal poston of shut-
tle race, further adjust to provde a 7.5 mm
clearance between the needle and the shuttle
race. Then, tghten screw
7
of shuttle race.
6) When changng the number of needle from the
number at the tme of standard delvery or us-
ng a new drver, perform the adjustment of the
heght of drver.
[Adjustment of height of driver]
1) Adjust so that the blade pont of nner hook
4
meets the center of needle
5
and tghten set-
screw
1
.
2) Bend the needle guard secton of drver
6
n
the drecton of arrow A so that the protrudng
amount from the bottom end of the needle guard
secton of drver
6
to the tp of needle
5
s 0 to
0.5 mm when the blade pont of nner hook
4
s
out by 0.5 mm from the rght end of needle
5
.
3) Bend rear end
B
of drver
6
n the drecton B
so that the clearance between rear end
B
of
drver
6
and nner hook
4
s 0.3 to 0.6 mm.
4) Perform adjustment of steps 3) to 5) above.
1. When making the needle size thick-
er, confirm the clearance between
the needle tip or the intermediate
presser and the wiper. Wiper can-
not be used unless the clearance
is secured. In this case, turn OFF
the wiper switch, or change the set
value of memory switch U105.
2. When the height of the needle
guard of the driver is not proper,
abrasion of the blade point of in-
ner hook or stitch skipping will be
caused.
0.05 to 0.1 mm
7.5 mm
5
4
7
8
0 to 0.5 mm
4
A
0.5 mm
6
B
B
4
1
3
2
3
2
1
5
4
6
0 mm
0 mm
0.3 to 0.6 mm
