Brother NV4000D Service Manual page 114

Modules
4
Thread hook ASSY disassembly
1. Remove the retaining ring (E4), and then remove the washer 1 and the
polyester slider 2.
2. Reverse the thread cutter frame 3, and then remove the thread hook
assembly 4 and the spacer 5.
3. Remove the lower thread cutter 6 from the spacer 5.
5
Rubber removal
1. Remove the retaining ring (E3), and then remove the rubber 1.
2 - 92
Thread cutter module
Retaining ring E4
1 2 3
3
5
6 5 5
Retaining ring E3
1
4