[mdj89]

Does anyone know how this round bearing comes off and part number for it? It's on a 420 on both sides of the transaxle and it's leaking fluid on one of them.

 

[jdalchemist]

This is not one I have encountered. From the JD parts diagram it appears that is a needle bearing, part AM35569. It is not clear if this is a cup bearing or if some plug is driven into the bore to seal the transaxle. As long as the thing is not loose or spinning, I would clean the surface well with solvent and a brush and use some good silicone in an attempt to seal the unit.
Harold

 

[Stefan]

I am pretty sure that this cover is not part of the needle bearing. One of those plugs is also part of my Agrias Tecumseh transmission and it’s not shown in the drawing as well.

I only took one picture in which you can see the plug.

 

[Stefan]

The outer diameter is 5/8" and it is a B-910 needle bearing.
Maybe this one is similar to yours.