Small Engine Troubleshooting Problems? Ask a Mechanic Now.
See link above. Transmission and rear end is supposed to be a sealed unit, filled with grease and then halves put together. It has no way to drain or fill. # ***** is a seal, if you have transmission out, you could remove it and see if there is any water present. If not, I would leave it alone. It is manual transmission and is not subject to the problems with water in a hydro stat.
I see qustion is still open. Did you see my response?