Bobbin Presser Mechanism - Brother HE-800A Service Manual

3. ASSEMBLY

3-6. Bobbin presser mechanism

4197Q
4199Q
1. Install the spring hook U (1) to the bobbin presser bracket (2).
2. Install the screw (3) and nut (4) to the bobbin presser bracket (2).
* At this time, install the screw (3) so that the length shown in the illustration is 11.7 mm.
3. Install the bobbin presser (5) to the bobbin presser bracket (2) with the set screw (6).
* At this time, install so that the end of the bobbin presser (5) is at the center of the bobbin case (7).
4. Install the auxiliary plate (8) and the opening plate (9) with the shoulder screw (10).
5. Install the bobbin presser bracket (2) and the auxiliary plate (8) to the bed with the shoulder screw (11).
6. Install the opening plate (9) to the rotary hook cover (13) with the shoulder screw (12).
7. Attach the two extension springs (14).
8. Turn on the power, and after the sewing machine returns to the home position, turn the screw (3) and the nut (4)
to adjust so that the clearance between the bobbin presser (5) and the edge of the bed is approximately 12.5
mm.
54
Approx.12.5mm
HE-800A
4198Q
4200Q