Elna Sewing Machine Service Manual.
Elna Stella Models 37 through 57.
Includes Elnita Air Electronic 17.
Here are just a few examples of what's included in this manual:
* Needle clearance.
* Feed timing.
* Zig zag centering.
* Hook Timing.
* Upper and lower tension.
* Motor belt tightness.
* Wiring connections.
* Troubleshooting.
* More!
16 page service manual.
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