Picker Adjustment - SunStar HC Series User Manual

6-3) 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.6-6].
Picker screw
② Adjusting the starting height
Unfasten the screw on the picker stopper. Adjust so that the picker softly touches the bobbin when pressed by
hand.
Picker
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
Nut
Correct position of the picker
Bobbin case
[Fig.6-6]
[Fig.6-7]
[Fig.6-8]