Last month I was forced to rebuild my hydro unit, broken thrust bearings and races. It took three months of constant internet searching to look for any hydro that would fit and I came up with ZERO. $250 would have been cheap. After checking with Yamaha dealers I found one that at least knew that Yamaha manufactured a lawn tractor, his old parts book listed the hydro unit for $896. (N/A now). I would put the hydro on a shelf. With none available that unit right now is worth a lot more than $250 for a right buyer.
IMHO