I snapped an axle shaft in my Yazoo Mower (YR-76) that required disassembling the entire transmission in order to get the broken shaft out. While it was out, I cleaned each part, and replaced worn bearings and oil seals. Here is the process I took.
Yazoo Mowers are becoming increasingly rare, but they have an almost cult following of fans and owners. They are very unique in their design, allowing them to have a zero-degree turning radius way before the modern hydraulic zero-turn mower was invented, and they have a gear shift lever that allows quick transitions from forward to reverse.