Adjusting the needle thread tension
74 Service Instructions M-TYPE DELTA - 00.0 - 12/2019
11.2.2 Adjusting the spring tension
The thread tension preset at the factory is 90 grams.
Fig. 60: Adjusting the spring tension
To adjust the spring tension:
1. Hook the spring balance (1) into the thread tensioning spring.
2. Pull on the spring balance (1) until the thread tensioning spring starts
moving.
3. Loosen the knurled nut (3).
4. Turn the screw (4) to adjust the spring tension:
• greater spring tension: Turn screw (4) counterclockwise
• less spring tension: Turn screw (4) clockwise
The thread tension value is indicated on the scale (2) of the spring
balance (1).
5. Tighten the knurled nut (3).
(1) - Spring balance
(2) - Scale
(3) - Knurled nut
(4) - Screw
To Next Page
Loading...
