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If your Elna Supermatic Star series sewing machine is not zig zagging, then it's possible that the cam stack drive gear is broken.
Covers models TSP, SU, ST, SP, ZZ, EC - free arm and flat bed.
In part 1, I show the symptoms and a way of identifying if the cam drive gear is broken, prior to even picking up a screw driver.
Part 2 - • Elna Supermatic Star S...
I show step by step procedures on how to replace the cam stack pinion gear by removing the top shaft and the Elnagraph mechanism.
Let's keep these classic sewing machines going for as long as possible because they are great machines and the build quality is brilliant.
Please visit my web site at www.institches.co.nz
www.patreon.com/sewingmachines