11. Knife of action hook position
Adjustment requirements:
The clearance between the cutter drive lever and the knife of action hook at the lowest point is
0.05~0.2mm.
Adjustment method:
Use the knife of the drive hook adjustment screw to adjust.
The phenomenon when the adjustment value changes:
(1) When the cutter does not return or continuously falls, check the gap between the cutter drive
lever and the cutter action hook, or change the cutter drive lever tension spring.
(2) The cutter often does not fall down, and it is not possible to drop the knife at a low speed. It
may be that the tension spring of the cutter driving claw is insufficient. (replace the tension
spring)
12. Adjustment of the stop device
Adjustment requirements:
The clearance between the stop sub-block A and the stop lever block B is 0.2 to 0.5 mm (when
parked).
Summary of Contents for ZJ781-BD
Page 1: ...Service Manual Buttonhole machine ZOJE ZJ781 BD ...
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