[nophun]

On the drive shaft cover, above the label, left of center, there is a "D" shaped hole, the kind you'd mount an electrical switch in so it doesn't spin.
There's a dull ring in the paint around it, so something was there, it's a factory punched hole and paint is still intact.

Of all of the thing I will have to do to get this machine mowing again, this is what I'm most worried about; these are the kind of things that keep me up at night.