Well that was easy, new seal seems to have done the trick. Sat all night and still dry after a bit of a workout. I suspect it was just a substandard seal since the replacement had twice the structure....
Ordered the seal earlier from Southern and watched a few video's and looks to be a straightforward process. It really just started and pretty much emptied the axle on the garage floor over several weeks, have not use since (annual monsoon's) so hopefully just a tired seal. The second video looks...
Looks to be time to replace one of the knuckle seals since it's leaking pretty good now. Just ordered the seal and the process looks pretty simple, any concerns dropping the lower axle housing or just have at it.
Have the same mower and experience with the belts, my original set didn't last but a few days even after adjusting each time before using. Hit up napa for a set of Kevlar belts and have not touched them in almost 3 years since. I did a lot of power transmission work back in the day and never...
In your search keep in mind that the YM2310D is a parts candidate since they are both very similar.
https://www.tractorpartsasap.com/brake-shoe-new-yanmar-194312-36510-181195.html
May want to consider a reconditioned Yanmar considering your intended use. Very basic bomb proof runners with no electronics sitting around. One of the best sources is fairly close.
https://www.fredricksoutdoor.com/default.asp?page=xPreOwnedInventory#page=xPreOwnedInventory&make=yanmar