Thread Tension Adjustment - Brother SB3734T Service Manual

Adjustment
1. Install the thread tension adjusting plate into the
gap of the right side of the thread tension dial,
and then attach the notch of the thread tension
dial, and then adjust the scale of the thread
tension dial while pulling it toward.
Thread tension
adjusting plate
Notch

Thread tension adjustment

Notch
3 - 16
2. Adjust the thread tension to 30g, when the scale
of the thread tension assy L is [4].
3. Adjust the thread tension to 15g, when the scale
of the thread tension assy R is [4].
4. Adjust the thread tension to 20g, when the scale
of the thread tension assy O is [4].
5. Adjust the thread tension to 25g, when the scale
of the thread tension assy U is [4].
Thread tension assy L
Thread tension assy R
Thread tension assy O
Thread tension assy U
Thread
30 ± 10g
(Spun #60)
15 ± 10g
20 ± 10g
25 ± 10g