How to fix the timing on a Singer 7258 sewing machine

The timing of my sewing machine -- the Singer 7258 -- had gone out of alignment.  The most obvious symptom was that the top thread would no longer pick up the bobbin thread.  Upon closer inspection, I found the needle was jamming into the plastic of the bobbin housing! Ack! This was also causing my needles to get all bent up.

It was 9pm and I did not want a several week delay required for sending the machine in for servicing.  I have work to do, you know!  So, I dove in, poking and prodding at every which thing until I figured out the magical combination.  I'm documenting this magical combination so that there will finally be something out there on the web for fixing a Singer 7258 sewing machine's timing!

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