Hi Em,
Yes that will be the only way of getting a sample to obtain the info. Honestly those self aligning bearings aren't a problem overall as they last for more years than I care to remember as they are not subjected to much shock like rear roller bearings and reel bearings are.
Yes it certainly can be quite addictive, but after you've done a few I'll ask you the question again.
I just don't know if I'll be able to find a RH bearing carrier of the larger variant as the 20 inch machine is the rarest of all the different sized mowers and also the most expensive when they were new, thus most of the pricing structure was based around the 17 inch model. If you had a 20 inch solid deck you'd be really reluctant to part it out as they are rather indestructable and as such they are always rebuilt opposed to the twin railers which were far more tempermental with failing rails, thus many of those have gone to SB Heaven long ago. Anyway the later ones had reverted back to the smaller bearings so as to streamline parts over the 3 issued size mowers.
I'll also have to solve that trickler issue as it can be rather dangerous if the exhaust spits out a spark in those rather lame Kirby mufflers. This wouldn't happen with a Briggs engine as there mufflers are of a far better design.
Anyway give those parts a few days in the sun and you'll be up and away. It won't take long to have it looking like a mower again. You'll see.
PS. I've just noticed that you're missing a section of the rubber seal that you've painted over on the PTO shaft bearing housing as per your photo above. If you look closely you'll see that you've got a jaggered edge around the shaft when it should have another section attached that protrudes outwards and seals snuggly around the actual shaft. This stops water getting into the actual bearing itself.
It should be like this,
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2016/12/full-5156-31480-101_2134.jpg)
Cheers,
BB.