I have an old 7-blade Kool Operator fan which I'm trying to get working
again. For a long time, it only started up on Hi, and now it just doesn't
start up. And the blade no longer moves freely. So I suspect it needs
cleaning and oiling. I hope that's all. I don't find a capacitor anywhere,
and the switch seems good.

The problem is getting the plastic fan blades off the shaft so I can take the
motor apart. I can't tell whether it screws on, or in which direction, or is
pressed on, or what.

Has anyone taken one of these fans apart or knows how to get the blades off?

Thanks for any suggestions.