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4.9 Setting the thread advancing device
Fig. 28: Setting the thread advancing device
(1) - Screw
During the cutting process, the thread advancing device (2) will be moved
forwards after picking up the loop and be returned during the
2
The thread advancing device has been timed by the control. No changes
are possible. The thread advancing device ensures a defined thread
length, required for starting the seam, and offsets any thread elongation.
Proper setting
The thread advancing device (2) should advance enough thread to meet
the following requirements for the next sewing cycle:
• Safe seam beginning.
• Pulling the thread end under the sewing material.
• No thread deflection into the hook.
To set the thread advancing device:
1. Loosen the screw (1).
2. Set the position of the thread advancing device (2) accordingly.
50
WARNING
Risk of injury from moving parts!
Crushing.
Only set the thread advancing device with the
machine switched off.
①
②
nd
movement phase of the thread-pulling knife.
(2) - Thread advancing device
Service Instructions 806N-111-10/806N-121-10 - 00.0 - 09/2023
Machine head 111
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