11-4) Picker Adjustment - SunStar SWF/C Series User Manual

11-4) PICKER ADJUSTMENT

If the position or the starting height of the picker is incorrect, the machine may not be able to separate the upper
and the lower thread and cut them both, resulting in short upper thread.
① Adjusting the picker position
Manually move the picker so it touches the bobbin. Using the picker screws, adjust so the tip of the picker is
in the correct position as in [Fig.11-5].
Picker screw
② Adjusting the starting height
Loosen the screw for the picker stopper and adjust the picker to be 0.2~0.5mm apart from the bobbin when the
picker is pressed. Make left and right adjustments for the picker stopper. When all the adjustments are done,
tighten the screw for the picker stopper.
③ Adjusting picker standby position
Unfasten the screws on the picker solenoid cover. Adjust the position of the solenoid cover so that the tip of
the picker is around 20mm away from the bobbin.
[CAUTION]
After adjusting the picker standby position, check if the bobbin case moves smoothly.
Picker
Bobbin case
Screws on the picker solenoid cover
Picker solenoid
11-4
Correct position
of the picker
[Fig.11-6]
Picker
Picker stopper
[Fig.11-7]
[Fig.11-8]