Brother RH-9820 Service Manual page 87

J
K
Looper base pressure adjustment
1) Apply adhesive (Threebond 1373B) to the
outer circumferences of the two ball bearings
(91).
2) Insert the two ball bearings (91) into the top
and bottom of the looper base mounting hole
(i) in the bed.
* Insert the two ball bearings (91) securely
until their surfaces (j) are fully touching.
* Wipe away any excess adhesive at this
time.
3) Insert the looper base assembly (k).
1) Gently screw the looper pulley assembly (93)
onto the threaded section (l) of the looper base.
2) Secure the looper pulley assembly (93) so that
it will not turn, and then push the back of the
looper base (92) at a point 20 mm to the left of
center with a force of 70 N.
3) Tighten the screw (94).
RH-9820
6. ASSEMBLY
1098B
1099B
1100B
1101B
78