Lower Thread Trimmer Mechanism (1) - Brother HE-800A Service Manual

2-22. Lower thread trimmer mechanism (1)

4160Q
4161Q
1. Remove the shoulder screw 4.37 (1), and then remove the knife driving lever (2) from the lower thread link
assembly (3).
2. Remove the four screws (4), and then remove the base plate (5).
3. Remove the two flat screws (6), and then remove the needle plate (7).
4. Remove the two screws (8), and then remove the fixed knife set (9) from the knife driving lever (2).
5. Remove the shoulder screw (10) and the screw (11), and then remove the lower thread presser (12) from the
base plate (5).
6. Remove the shoulder screw (13), plain washer (14), washer (15), and then remove lower thread clamp plate
assembly (16) from the base plate (5).
7. Remove the shoulder screw (17), collar (18), washer U (19) and washer D (20), and then remove the knife
driving lever (2) from the base plate (5).
8. Remove the two screws (21), and then remove the lower thread retainer (22) from the lever assembly (23).
9. Remove the screw (24) and collar (25), and then remove the lever assembly (23) from the base plate (5).
10.Remove the screw (26).
HE-800A
2. DISASSEMBLY
4162Q
45