I've got a number of YT3600 parts available. I have 2 mower decks, a snowblower an engine with a slight rod knock (It didn't make any bad noises but supposedly does if it warms up and is under load) and a bunch of misc. parts.
Let me know if you need something and what would be a fair price for you & me both. I'm in St. Paul, MN and would prefer not to ship large parts, but I'll consider it.