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B. Adjusting the timing of the upper thread trimmer
After shutting off the preparation lamp by pressing the
preparation key in the operation box, press the
presser foot key to contact the presser foot on the
needle plate.
To adjust the opening speed of the upper trimmer,
loosen the tightening screw ③ and adjust the open
cam A ④ left or right to set the distance between the
upper trimmer's moving blade ① and the open cam B
② at 0.5mm.
The opening timing is adjusted by correcting the
distance between the lever return plate of the upper
thread trimmer
7) Adjustment of the lower thread press plate
A. Loosen the fastening screw
Adjust the distance between the lower thread press plate
the center of the needle hole to make it 2 ~ 3mm.
B. Tighten the fastening screw
plate.
2mm
8) Adjustng the lower trimmer base
A. Place the end part of the under thread presser ① on A
exactly.
B. Move the mes automatic lever ② arrow-directionally to
touch the lower thread trimmer's moving blade
C. Adjust to touch the lower thread cover
the lower hook plate
lower thread cover and then fasten the joint screw
and the return cap
of the lower thread press plate.
of the lower thread press
About 3mm
[ Fig. 22 ]
with the roller of
by fastening the joint screw
to be 2mm.
and
on B.
of the
.
17
①
②
③
④
Approx. 0.5mm
②
⑦
2mm
A
⑤
④
B
③
③
⑤
⑥
[ Fig. 21 ]
Roller
①
[ Fig. 23 ]
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