Operation Manual – TEXI 781 SERVO
Loosen the fixing screw of the pinion gear to adjust the above standard adjustment value.
Pay attention to the axial movement of the lower shaft when adjusting. Confirmation method after
adjustment: pad the paper at the needle drop and turn the pulley by hand to observe whether there
is a lateral flow needle phenomenon on the needle drop point on the paper, that is, to ensure that
the swing of the needle before the needle bar is lowered to the front of the puncturing cloth should
end.
The phenomenon when the adjustment value changes:
When the reticle is missed, it will cause the needle to flow, the needle to break, and the needle to
jump.
5.
The adjustment of the needle drop (for the needle board)
Adjustment requirements:
When sewing the parallel portion on the left side, the swing fork is at the leftmost end when the
needle is lowered to the middle portion of the needle plate hole.
Adjustment method:
When the position of the needle bar swing fork is normal, and the needle drop point is not correct,
the tightening screw of the crank shaft after the swing shaft can be loosened to be corrected.
The phenomenon when the adjustment value changes:
If the needle drop point is wrong, it will increase the needle swing amplitude, and the inaccurate
one will hit the needle plate hole and cause the needle break or thread break.
6.
The height of the needle bar swing fork Adjustment requirements:
