Thanks for the info guys

It looks like the spindle doesn't go right through.Perhaps it's a friction fit.
That sure helps as I think it would be much easier (maybe) to remove than if it was a rusted in threaded spindle.In any case I would only need to get one end off in order to put the new rollers on.
I will try CRC 5-56 as you recommend and some propane heat to crack it if possible.(What is wrong with WD40 by the way?)Mabe I cab hold the spindle in a vice and get a slide hammer under the end near the center.
Great diagram Jack.Jack do you have any more info on the mower body.?

thanks Mikoooo