Brother Z-8550A Instruction Manual page 66

[A]
[B]
6. Check that the feed dog does not touch the needle plate
both when the reverse lever (9) is not lowered and when
it is lowered.
If it touches, adjust the forward/back installation position
(centering) of the feed dog.
3502M
7. Without lowering the reverse lever (9), move the stopper
(5) up until it touches F-regulator connecting rod (10),
and then tighten the screw (3). (Fig. A)
3503M
8. With the reverse lever (9) lowered all the way, move the
stopper (6) down until it touches the F-regulator
connecting rod (10), and then tighten the screw (4). (Fig.
B)
3504M
9. For models/specifications other than the 8550A-031, with
the reverse lever (9) lowered all the way (with the
plunger (11) of the quick reverse solenoid moved to its
highest position), touch the quick reverse solenoid (2)
against section (A) of the plunger (11), and then tighten
the two screws (1).
3505M
Z-8550A, 8560A
11. REPLACING PARTS
58