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Machine head 111
To time the movement of the sewing foot:
1. Press the Lift/lower sewing head
The sewing head lowers.
2. Press the O button.
Threading mode is switched on.
3. Loosen the screws (1) (2x).
4. Turn the eccentric (2) on the shaft accordingly.
5. Tighten the screws (1) (2x).
4.7 Setting the thread tensioning spring
Fig. 25: Setting the tensioning spring (1)
(1) - Screw
Proper setting
The travel and the tension of the thread tensioning spring should be set in
a way that the needle plunges into the sewing material down to the eye at
the moment when the thread tensioning spring reaches its upper position.
To set the thread tensioning spring:
1. Let the machine to sew at a slow speed.
2. Watch the thread tensioning spring.
3. Stop the machine while sewing with a press of the O button.
4. Turn the handwheel manually once and watch the thread tensioning
Service Instructions 806N-111-10/806N-121-10 - 00.0 - 09/2023
spring again.
button.
①
(2) - Adjusting wheel
②
47
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