Thread Controller Springs - Duerkopp Adler 745-26 Service Instructions Manual

15.14 Thread Controller Springs

98
Base setting
The thread controller springs must hold the needle threads tensioned
until the needle tips enter the material.
If the needle threads are already loose when the needles enter, then
there is a danger that the needles, during their downward movement,
will enter into the threads.
1
Caution Risk of Injury !
Turn the main switch off.
Set thread controller springs only with the main switch turned off.
Spring swing
–
Loosen screw 1.
–
Set the regulator 3 by turning.
–
Tighten screw 1.
Spring tension
–
Loosen screw 1.
–
Turn bushing 2.
Turning clockwise:
Turning counterclockwise:
–
Tighten screw 1.
2
3
Increase spring tension
Decrease spring tension