Brother RH-9820 Instruction Manual page 84

9. STANDARD ADJUSTMENTS
75
<Zigzag base line position adjustment>
9. Remove the face plate (8), and then loosen the socket bolt
(9).
0476B
10. Open the cover (10), and then remove the cap (11).
11. Insert a flat-tipped screwdriver into the hole and turn the
zigzag eccentric pin (12) to adjust the zigzag base line
position.
12. Tighten the socket bolt (9).
13. Repeat steps 4 - 12 until the inner zigzag base line is
aligned correctly.
14. Once adjustment is complete, return the cap (11), cover
(10) and face plate (8) to their original positions.
0434B
RH-9820