Brother NV4000D Service Manual page 52

Main unit
16
Presser SW holder ASSY removal and disassembly
1. Remove the screw 1, and then remove the presser SW holder assembly
1.
2. Remove the presser SW assembly 2 from the presser SW holder 3.
17
Spring removal
1. Remove spring
S65
18
Presser SW link removal
1. Remove the retaining ring (E3), and then remove the presser SW link 1.
2 - 30
Thread tension unit
.
1 1
3
2
S65
Retaining ring E3
1