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❸
❶
❷
❹
0 mm
0.05 to 0.1 mm
❹
0.3 to 0.6 mm
❹
❸
❷
❺
0 mm
❻
❶
❺
❹
❼
❽
7.5 mm
0.5 mm
❻
B
2) Loosen setscrew ❶ in the driver. Drawing bob-
bin case opening lever hook ❷ toward you,
open it to the right and left until bobbin case
opening lever ❸ comes off.
At this time, be careful not to let shut-
tle ❹ come off and fall.
3) Adjust so that the point of shuttle ❹ meets the
center of needle ❺ , and that a clearance of 0
mm is provided between the front end face of
driver ❻ and needle as the front end face of
driver receives needle to prevent the needle
from being bent. Then tighten setscrew ❶ .
4) Loosen shuttle race screw ❼ , and adjust the
longitudinal position of the shuttle race. To do this
adjustment, turn shuttle race adjusting shaft ❽
clockwise or counterclockwise to provide a 0.05
to 0.1 mm clearance between needle ❺ and the
blade point of shuttle ❹ .
5) After adjusting the longitudinal position of
shuttle race, further adjust to provide a 7.5 mm
clearance between the needle and the shuttle
race. Then, tighten screw ❼ of shuttle race.
6) When changing the number of needle from the
number at the time of standard delivery or using
a new driver, perform the adjustment of the
height of driver.
[Adjustment of height of driver]
1) Adjust so that the blade point of inner hook ❹
meets the center of needle ❺ and tighten set-
screw ❶ .
2) Bend the needle guard section of driver ❻ in
the direction of arrow A so that the protruding
amount from the bottom end of the needle guard
section of driver ❻ to the tip of needle ❺ is 0 to
0.5 mm when the blade point of inner hook ❹ is
out by 0.5 mm from the right end of needle ❺ .
3) Bend rear end B of driver ❻ in the direction B
so that the clearance between rear end B of
driver ❻ and inner hook ❹ is 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 inner
hook or stitch skipping will be
caused.
– 116 –
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