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7. ASSEMBLY
Z-8550A, 8560A
58
7-4. Zigzag mechanism
1. Needle bar base 8. Wick
(With needle bar base guide pin inserted) (Pull in oil tank.)
2. Needle bar base guide R 9. Wick (ring)
3. Set screw (Pass the shaft through the ring.)
4. Needle bar base guide pin 10. Zigzag joint (Pass the shaft through.)
5. Set screw 11. Bolt (Temporarily tighten)
6. Pulse motor assembly 12. Screw
7. Bolts [3 pcs] 13. Screw
14. Knee lifter bar
15. Screw
Pass the harness of
the pulse motor
encoder detection
unit through.
A
fter 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”.
If there is a lot of looseness in the wic
k
(ring) after installing, pull only the wick
shown in the illustration through the oil tube
to adjust.
0123B
0122B
A
fter pushing in needle bar base guide R, check tha
t
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.