Necchi Lydia 3 Models 544-542 Sewing Machine Service Manual.
Includes:
* Needle to hook timing.
* Needle and feed dog timing.
* Sewing test.
* Zigzag automatic unit.
* Lining up cam disks.
* Needle-needle plate centering.
* Automatic feeding.
* Belts.
* Upper shaft.
* Stitch length regulating.
* Tension assembly.
* Change motor brushes.
* Wiring diagrams.
* Much more.
Great diagrams!
45 page service manual.
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