You mention doing a K66 swap. One thing to keep in mind if you decide to go that route is tire clearance for the bigger tires. Not so sure 23 inch tires will fit on that machine.
It's just an idea at this point. I did start and run it today for about 30 seconds to a minute and I tested the K46. It does work, forward and reverse. I only went maybe 10 feet or so. I didn't want to run it any longer for a couple reasons-
1. The gas getting in the oil. I can run it longer after I rebuild the carb.
2. Not sure what the proper oil level is. It is registering on the stick, and there is probably about 1.5 quarts in it.
3. The fan is broken on the hydro and I don't want it getting hot. I ordered a new fan off of eBay, I should have it Monday. I'll also be changing the oil in the K46 to the correct synthetic 5w50 if I can find it.
It started up immediately, it only cranked for maybe a second before it fired. It wasn't running great, I assume due to carb issues as well as probably needing a tune up. It also didn't run terrible, it responded to throttle inputs and didn't seem to surge at all. It might have a bit of a misfire bit it was hard to tell. There was a fair bit of smoke but I don't believe it was actually from the exhaust, I think most or all of it was oil and dirt burning off the exhaust and heat shields. After all, I did kick up a lot of grease while cleaning this thing and I really made no attempt to clean the muffler.
Should I continue to post my updates and questions related to this tractor here or should I start separate threads for those?