2.10.2
Thread take-up spring
Caution: Risk of injury!
Turn off the main switch.
Check and set the thread take-up spring only when the machine is
switched off.
Standard checking
The standard setting for the spring travel and spring tension only
apply to usual thread sizes. Very thick or very thin threads or sewing
material may necessitate different settings.
Spring travel
The thread take-up spring 1 has to keep the needle thread from the
moment of the thread lever lifting until the needle eye’s penetrating of
the material under a light tension. In order to achieve a regular seam
with a low thread tension, the travel of the thread take-up spring may
be increased. The thread take-up spring must only meet the stop
when the needle eye has penetrated the material.
Spring tension
The spring tension should be lower than the thread tension.
Correction
Spring travel
–
Loosen screw 2.
–
Turn the stopping collar 4.
Turning counter-clockwise = larger travel
Turning clockwise = smaller travel.
–
Tighten screw 2.
Spring tension
–
Loosen screw 2.
–
Adjust the tensioner disc 3 without changing the stopping collar’s
4 position.
Turning the disc clockwise = less spring tension
Turning the disc counter-clockwise = higher spring tension
–
Tighten screw 2 without changing the positions of the stopping
collar 4 and the tensioner disc 3.
33
3
1
2
4
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