The phenomenon when the adjustment value changes
If it does not engage, the opening action of the scissors is not good.
21. Upper scissors spring pressure
Adjustment method:
(1) When the upper thread scissors are loose, move the front of the scissors spring with the hand
plate.The front of the upper scissors spring and the scissors mouth are all attached, and the thread
can be clamped regardless of where the scissors cut the thread.
(2) When the upper scissors edge is not sharp, the scissors can be replaced.
22. Fixed knife position
Adjustment requirements:
The fixed knife edge is 0.3~0.5mm away from the needle plate hole.
Adjustment method:
(1)
Loosen the fixed knife fixing screw for the fixed knife adjustment.
(2)
When changing the fixed knife, take out the hook finger to replace it.
The phenomenon when the adjustment value changes:
The gap between the fixed knife and the hole of the needle plate is too narrow, and it is easy to
break when sewing.
Summary of Contents for ZJ781-BD
Page 1: ...Service Manual Buttonhole machine ZOJE ZJ781 BD ...
Page 2: ......
