44
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 holder
③
contacts the moving blade
②
stably holding the lower thread. Adjustment can
be conducted as follows.
1) Loosen the tightening screw
④
, and place the
hook base
⑦
and the fixing blade base
⑧
closely.
Fasten the tightening screw
④
at the hole center.
Loosen the fixing screw
⑨
and adjust the distance
between the slide plate guide
⑤
and the fixing
blade tip
①
at some 24mm. After that, tightly
fasten the fixing screw
⑨
.
2) In case of the lower thread holder
③
, loosen the
lower thread holder screw
⑥
and adhere the lower
thread to the inside
⑩
of the blade
②
with small
pressure not to hold lower thread too strong or
too weak, then tighten the screw
⑥
firmly.
[Fig. 8-19]
⑤
①
⑨
24mm
③ ⑥
④
②
⑧
⑦
8.11.2) Adjustment of Moving Blade
The moving blade
①
moves the upper and lower
threads to the point of the fixed blade
⑥
. At this
time, the moving blade
①
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 screw
②
to the
extent that the moving blade
①
has the space to
move around.
2) Place the moving blade at the center of the fixed
blade
⑥
and the contact area with the moving
blade
⑦
, and then tightly fasten the fixing screw
②
.
3) Loosen the collar fixation screw
④, ⑧
and
loosen the screw of the thread trimming lever
①
in the [Figure 8-17].
4) Place the hole of the moving blade contact part
⑦
at the center of the fixed blade
⑥
and fix the
collar with screw
⑧
to the upper face, fix the
collar with screw
④
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 lever
①
.
[Fig. 8-18]
②
①
⑥
②
④
⑤
⑧
③
⑦
⑩
Содержание KM-1170BLX
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Страница 14: ...14 Fig 4 5 Thread trimming ...