20. 更換壓腳組
20-1 請依照以下順序取下壓腳組
1. 取下孔塞取下所有的縫針。
2. 取下調整螺樁放鬆螺絲。
20. Replacing presser foot
20-1 Removing:
(1) Remove all needles and the seal plug.
(2) Loosen the adjusting screw and then
the screw form the presser bar
connecting bracket.
3. 放鬆螺絲釋放活動刀片的壓力。
(3) Loosen the screw form the knife
holder
guide collar to be free the complete
set including the upper knife, the
knife holder, and the knife holder shank.
4. 取下螺絲取下活動刀架組。
(4) Loosen two screws form the knife holder
bracket to remove the knife holder guide
collar set and the upper knife.
5. 放鬆壓腳棒固定螺絲。
(5) Loosen the screw on the back of the presser
foot.
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