Table of Contents
Advertisement
Operation
Fig. 15: Adjusting the hook thread tension and the bobbin brake power (4)
(6) - Hook thread
8. Swiftly pull on the hook thread (6) and stop abruptly while checking
If the bobbin keeps running:
9. Adjust the braking spring (4) just enough to prevent an after-run of the
Pull-off must be uniform and easy once the bobbin has been inserted
Adjusting the needle thread tension
Fig. 16: Adjusting the needle thread tension
(9) - Additional thread tension - left needle
(10) - Thread tension - left needle thread
To adjust the needle thread tension:
1. Set the needle thread tension so that an even stitch pattern is achieved.
Operating Instructions 755 B, 756 B/F - 00.0 - 02/2021
⑧
the inspection window (8) to see if the bobbin keeps running.
bobbin (this is important as the braking spring will increase the hook
thread tension more than necessary if its pretension is excessive).
and the hook thread (6) has been threaded through the needle hole.
⑨
⑩
thread
⑥
(8) - Inspection glass
(11) - Thread tension - right needle thread
(12) - Additional thread tension - right
needle thread
⑫
⑪
29
Advertisement
Table of Contents
