Lock Nut Attachment; Thread Release Lever Attachment - Brother BC800 Service Manual

Main unit
3

Lock nut attachment

1. Attach the screw 1 to the lock nut 1.
*Key point
• Screw 1 the screw in half way.
2. Attach the screw 1 to the base holder assembly.
*Key point
• Tighten the screw until the lock nut 1 contacts the base
holder assembly.
1
4

Thread release lever attachment

1. Apply a bead of EPNOC AP (N) 0 to the caulking shaft 2 of the base
holder assembly 1.
2. Attach the thread release lever 3 and the spring 4 to the caulking shaft 2
of the base holder assembly 1, and then attach the retaining ring (CS4).
*Key point
• Position the tip of the spring at the top, and align the spring
with the hole on the thread release lever 3.
• Secure 0.2 mm between the thread release lever 3 and the
base holder 5.
Apply EPNOC AP (N) 0 to the caulking shaft of the
base holder assembly.
3 - 36
Needle-presser unit
Set Screw, Socket (CP)
M4X12
Color; Black
1
1
Bead
XC8387***
1
1
3
2 4
1 3
4
Retaining ring CS4