Brother RH-9820 Service Manual page 122

6. ASSEMBLY
<If the belt (upper shaft - lower shaft) is installed>
113
1) Remove the face plate (l) and the rubber cap
(m), and then insert the accessory pin (n) into
the groove (C) in the upper shaft crank from the
hole (B) in the arm to stop the upper shaft from
turning. (Upper shaft 0° position)
2) Remove the motor cover (7) if it is installed to
the upper shaft motor unit (c).
3) With the machine head tilted back, hold the
upper shaft motor unit (c) at the front, and then
place the belt (h) onto the motor pulley (j) so
that the D cut section (D) of the encoder is
facing directly to the right.
4) Place the positioning pin (e) at the rear of the
machine head into the slot (A) in the motor
holder (d).
5) Provisionally screw in the socket bolt with
washer (f) until it is almost fully tightened.
6) Return the machine head to its original position.
RH-9820
(Continued on next page)
0975B