Just a quick update. I have not had time to put the thing back together, but this morning I rotated the driven pulley in the transmission by hand. This rotated both the front and rear drive shafts and the Prowler did roll forward.
So based off of this, it has to be something on the drive side, correct? I have not had a chance to study the parts breakdown as far as how this transmission works, but based off of what I just said what is the likely culprit on the drive side (assuming the motor still runs as well)?
One other thing. The gear shift lever is out of the machine right now. It was originally in neutral (I know because I could push the machine before), but I shifted the linkage down one to put it into gear so I could rotate the transmission driven pulley to see what happened. Well, now I can't get the shift linkage to pull up and shift back into neutral? Any ideas why?