gave the end of it a whack to get the flywheel off and the threaded part snapped clean off.. never had that happen before, must have been hardened far deeper than usual.. usually you'll strip threads or mushroom it before that happens
Very weird....agree it might have been excessively hardened, or some random metallurgy defect.
Seems like you could find some top end grenaded saw for cheap. I’ve seen a lot saws go to the dump that probably had good cranks.
Kevin