TM 10-3530-207-14
2-2.
DARNING SEWING MACHINE - continued.
4.
Needle Thread Tension Adjust Nut.
Ideal stitches are formed when the needle thread and the bobbin thread are perfectly interlocked. The
tension exerted on the needle thread can be set by the adjust nut. Turning the nut to the right
(clockwise) increases the needle thread tension. Turning the nut to the left (counterclockwise)
decreases the needle thread tension.
5.
Bobbin Winder.
The bobbin winder is used to wind bobbins.
6.
Foot Treadle.
The foot treadle engages and disengages the clutch between the motor and the motor driving pulley.
Depress the treadle slowly for smooth clutch engagement. After clutch engagement, depress the
treadle further until the desired speed is reached.
2-9
