SunStar KM-1172BLX User Manual page 44

8.11.2) Adjustment of Moving Blade
The moving blade① moves the upper and lower
threads to the point of the fixed blade⑥. At this
time, the moving blade① rotates while it does not
touch the bobbin case, and trimming occurs through
its contact with the fixed blade. Blades can be
adjusted as follows:
1) Loosen the moving blade fixing screw② to the
extent that the moving blade① has the space to
move around.
2) Place the moving blade at the center of the fixed
blade⑥ and the contact area with the moving
blade⑦, and then tightly fasten the fixing screw
②.
3) Loosen the collar fixation screw④, ⑧ and
loosen the screw of the thread trimming lever①
in the [Figure 8-17].
4) Place the hole of the moving blade contact part⑦
at the center of the fixed blade⑥ and fix the
collar with screw⑧ to the upper face, fix the
collar with screw④ to the lower face then tighten
screws firmly. As shown in the figure<E> of the
[Figure 8-17], tighten the screw of the thread
trimming lever①.
8.11.3) Fixing Screw and Lower Thread Holder
When the fixed blade ① is half entered into the
moving blade, trimming is conducted safely at the
lowest possible pressure. At the time of trimming,
the lower thread holder③ contacts the moving blade
② stably holding the lower thread. Adjustment can
be conducted as follows.
1) Loosen the tightening screw④, and place the
hook base⑦ and the fixing blade base⑧ closely.
Fasten the tightening screw④ at the hole center.
Loosen the fixing screw⑨ and adjust the distance
between the slide plate guide⑤ and the fixing
blade tip① at some 24mm. After that, tightly
fasten the fixing screw⑨.
2) In case of the lower thread holder③, loosen the
lower thread holder screw⑥ and adhere the lower
thread to the inside⑩ of the blade② with small
pressure not to hold lower thread too strong or
too weak, then tighten the screw⑥ firmly.
44
⑥
③
①
⑦
⑨
⑤
③ ⑥
①
24mm
⑤
⑧
④
②
②
[Fig. 8-18]
⑦
④
⑧
②
⑩
[Fig. 8-19]