JUKI DDL-9000C-S Series Engineer's Manual page 81

Adjustment Procedure
The driven part stopper ❷ is a safety device so that interference is
prevented between the needle and the moving knife even though
the roller comes off the thread trimming cam when any unexpected
problem (such as a service interruption) occurs.
1. In the state that the thread trimming device is not in action, adjust
two driven part stopper setscrews ❸ so that the gap length be-
comes 0.3mm between the notch ❶ of the camʼs driven part and
the camʼs driven part stopper ❷.
2. Adjust two driven part stopper setscrews ❸ so that the gap length
becomes 1mm between the notch ❶ of the camʼs driven part and
the camʼs driven part stopper ❷ when the thread trimming solenoid
❹ is moved in the direction of the arrow.
Results of Improper Adjustment
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