Zigzag Mechanism - Brother Z-8550A Service Manual

7-4. Zigzag mechanism

1. Needle bar base
(With needle bar base guide pin inserted)
2. Needle bar base guide R
3. Set screw
4. Needle bar base guide pin
5. Set screw
6. Pulse motor assembly
7. Bolts [3 pcs]
After carrying out the assembly operations
in "7-5. Needle bar mechanism", tighten
while carrying out the adjustments in "9-12.
Needle zigzag sideways position".Then
carry out the adjustments in "9-11. Needle
zigzag forward/back position".
After pushing in needle bar base guide R, check that
there is no play between the needle bar base guide pin
and needle bar base guides R and F, and also that the
needle moves smoothly when it zigzags.
0123B
8. Wick
(Pull in oil tank.)
9. Wick (ring)
(Pass the shaft through the ring.)
10. Zigzag joint (Pass the shaft through.)
11. Bolt (Temporarily tighten)
12. Screw
13. Screw
If there is a lot of looseness in the wick
(ring) after installing, pull only the wick
shown in the illustration through the oil tube
to adjust.
Z-8550A, 8560A
Pass the harness of
the pulse motor
encoder detection
unit through.
14. Knee lifter bar
15. Screw
7. ASSEMBLY
0122B
58