Setting needle thread tension
58 Service Manual 867 Version 02.0 - 04/2015
13 Setting needle thread tension
13.1 Setting the thread regulator
The thread regulator determines the tension applied to guide the needle
thread around the hook. The required tension depends on the thickness of
the material to be sewn, thread strength, and stitch length.
Lower thread tension for
• thin material
• low thread strengths
Greater thread tension for
• thick material
• high thread strengths
Proper setting
The loop of the needle thread slides at low tension over the thickest point
of the hook, without forming loops or snagging.
Cover
• Throat plate slide ( 3.3.5 Opening and closing the throat plate slide,
page 15)
Fig. 46: Setting the thread regulator
Setting steps
1. Turn the handwheel and observe the cycle of the needle thread around
the hook.
WARNING
Risk of injury
Risk of crushing injuries and stab wounds from mov-
ing and sharp parts.
Switch off the sewing machine before checking and
setting the thread regulator.
1234
2
1
(1) - Thread regulator
(2) - Screw
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