Brother BC800 - Inner Rotary Hook (Bobbin Thread) Tension

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Adjustment Inner rotary hook (bobbin thread) tension
1. Set a bobbin (wound with Schappe Spun Sewing Thread #60) in the inner rotary hook and thread.
2. Pull the thread with a tension gauge, and adjust the tension adjusting screw so that it is 0.1 - 0.12 N (10 - 12 g).
XA9153001 Tension gauge 30 (0.3 N)
0.1-0.12mm
(10-12g)
Schappe Spun Sewing
Thread #60
Sprig adjusting screw