I don't know the year, can't find serial number on this thing anywhere. i bought it a few months ago, the guy didn't know what year it was. Any ideas? It has a kholer commad 15hp. I need atleast a discharge chute, i'm not about to run it without that. I have a bagger, and in the mean time i made a homemade chute blocker out of a piece of wood. I am considering a mulch kit, but not sure that would be a good idea since i only have bi-weekly lawns at this time.