Operation Of The Halt Switch; Adjustment Of The Thread Tension - JUKI PLK-G4030R Technical Manual

6-2. Operation of the halt switch

(1) If accidents such as a thread breakage, needle breakage and others
happened during the sewing, press the halt switch immediately.
The sewing machine stops instantly.
(2) To cancel the halt state, press the halt switch again.
(3) When continuing sewing, step on the grey foot switch to restart at the
halted position. (Press the jogging in forward/reverse direction icon so
that the sewing start position will move.)
(4) To cancel sewing, press the home position return icon

6-3 Adjustment of the thread tension

(1) Bobbin thread tension
Adjust the bobbin thread tension with the thread tension
Adjusting screw (No.2) on the bobbin case (No.1).
The thread tension become loose if turn the thread tension
adjusting screw (No.2) to the counterclockwise, and the thread
tension becomes tight if turn it to the clockwise.
(2) Adjustment of upper thread tension
Adjust the upper thread tension corresponding to the bobbin thread tension. The upper thread tension
becomes tight when tightening the thread tension adjusting nut (No.1) clockwise, and the upper thread
tension becomes loose when loosening the thread tension adjusting nut counterclockwise.
.
<1>: Bobbin case latch
<2>: Adjusting screw
<1>: Thread tension adjusting nut
<1>
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<1>
<1>: Halt switch
<1>
<2>