Thread Controller Springs - Duerkopp Adler 745-22 Service Instructions Manual

11.13 Thread Controller Springs

64
Base setting
The thread controller springs must hold the needle threads taut until
the tip of the needles enter the material.
If the needle threads are already loose when the needles enter there is
a danger that the needles will stitch into the threads during their
downward movement.
1
Caution Risk of Injury !
Turn the main switch off.
Set the thread controller springs only with the main switch turned off.
Spring deflection
–
Loosen screw 1.
–
Set the regulator 3 by turning.
–
Tighten screw 1.
Spring tension
–
Loosen screw 1.
–
Turn bushing 2.
Turning clockwise:
Turning counterclockwise: Decrease spring tension
–
Tighten screw 1.
2
3
Increase spring tension