Brother RH-9820 Service Manual page 205

7. ADJUSTMENTS
Work clamp plate R assembly
(Viewed from the underside)
1175B
25. Insert the clamp support shaft (28) in the direction of the arrow, and then install retaining ring C (23).
26. Tighten the two set screws (24) so that the clearance between the clamp shaft holder (37) and clamp lever R (38) is 2.5 ± 0.5
mm.
* Check that the sides of work clamp R (39) and needle plate R (40) are aligned at this time. If they are not aligned, loosen the
socket bolt (41) and adjust.
RH-9820 196