Originally Posted by Ridin' Green
Rear discharge finish cut decks like this one normally leave a lower grade finish to the cut than a side discharge deck. They also require more HP to run usually because instead of the grass being cut and blown out the side at the front, the grass has to be cut at the front, and then the long clippings have to pass back through the blades on their way out the rear of the deck, which adds to the power drain. Too, this machine has got to be quite a bit heavier than any other Z, or SZ for that matter, so I would think that the FX1000 would be the minimum engine that could run it efficiently, and I would want at least an additional 5 or so ponies.
from what I hear it requires way less power to run a rear discharge.