Operation Manual

Operation
Operating manual 969 - 00.0 - 08/2014 39
5.7.2 Setting hook thread tension
Fig. 20: Adjusting the hook thread tension
WARNING
Risk of injury from moving parts.
Turn off the machine before tensioning the hook
thread.
ATTENTION
Pulling the thread in the wrong direction while measuring
tension can result in incorrect tension measurement
results.
Be sure to pull the thread in the proper direction.
ATTENTION
If the needle thread tension is too low, the tension of the
hook thread will also be too low. At higher sewing speeds,
the needle thread will not be pulled properly and will get
stuck in the hook. This manifests itself through increased
noise and can result in damage to the machine.
Set the lower tension properly or reduce sewing speed.
(1) - Bobbin housing
(2) - Hook thread
(3) - Adjusting screw
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