Brother RH-9820 Service Manual page 92

6. ASSEMBLY
G
Looper base and needle bar gear block position adjustment
0930B
0931B
1195B
1196B
83
1) Loosen the socket bolt (6) of the vertical shaft
timing pulley U assembly (7).
2) Turn the needle bar gear block (a) until the
socket bolt (6) of vertical shaft timing pulley U
assembly (7) is toward the front when the
thread guide (e) on the needle bar is at the
back.
3) Turn the looper base (b) until reference line (B)
on the bed is aligned with reference line (C) (0°:
left side) on the looper base.
4) Install the positioning gauge (f) to the end of
the needle bar gear block (a) with the screw
(g). (The thread guide (e) on the needle bar
should be all the way in [on the right side in
the illustration].)
* Install the positioning gauge (f) so that it is
pushed up to the top-left.
5) Turn the needle bar gear block (a) in the
direction of the arrow until the positioning
gauge (f) touches the end (h) of the cutter
driving bushing.
* The underside of the positioning gauge (f)
should touch the end (h).
RH-9820