24
TAKE-UP SPRING
Thread tension
adjusting
stud
The play between the pull of the upper thread by the
take-up lever and the pull of the thread by the hook
creates tension on the upper thread. If the tension of
the take-up spring is too tight, looping and loose
stitches may result.
If the tension of the take-up spring is too weak, and
the machine does not detect thread breaks, you can
increase the tension by turning the thread tension
adjusting stud clockwise.
If you want to change the relation between the
tension of the thread and the operating capacity of
the take-up lever, move the location of the take-up
spring detector to the right or left.
The take-up spring should touch the detector for
proper thread break detection
Take-up
spring
detector
Thread
take-up
spring
Dirt, dust or other foreign material can accumulate
in the space shown, preventing the thread detector
from sensing the thread. Remove any accumulation
with crocus cloth, an emery board or other slightly
abrasive material.
Our compact and newer systems use Wheel
Sensor for thread break detection. The older
systems use Spring Break Detection.
Take-up spring
unable to connect
with thread detector
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