Brother RH-9820 Instruction Manual page 65

6. USING THE SEWING MACHINE (SEWING OPERATION)
<Lower thread take-up spring tension and stroke
adjustment>
Tension adjustment
1. Loosen the screw (4), and then turn the L thread take-up
spring support (5) to adjust the tension.
* When turned in the direction of the arrow, the tension
of the thread take-up spring (6) will increase.
2. Once adjustment is complete, tighten the screw (4).
Stroke adjustment
1. Loosen the screw (7), and then turn the L thread take-up
spring guide (8) to adjust the stroke.
* When turned in the direction of the arrow, the stroke
of the thread tension spring (6) will increase.
2. Once adjustment is complete, tighten the screw (7).
0444B
RH-9820
56