OK, I just got my tractor back after just over 2 months.
It was the splined coupler between the engine and hydro unit, completely stripped and took the hydro unit with it.
To those of you just joining the story, I was in my 2-1/2 year of ownership, so only parts were covered. In my opinion this was part defect, and should have been covered in full, warranty or not.
I ended up paying just under $1000 for labor to diagnose the problem, replace the hydro unit, replace the hour meter unit (oil leak at front of engine block) and 2 new filters.
In my opinion, Kioti kinda left me standing out in the cold with this whole situation. They did offer to help with some labor costs due to "loss of use" amounting to $390. I'm one of the original CK owners here and have never said a negative thing online here about any of the issues I've had with mine (this is my 4th issue), for fear that the "haters" would just have fuel to feed their fire. I guess loyalty has no benefits.
I've pretty much lost faith in my tractor...since mine only sees light duty usage at best, and this issue was not of my doing, what happens when I really need to do something that requires some oomph? What happens if this occurs again in another 400 hours and I have to foot the entire repair cost?
Another thing that irks me...Kioti has never attemped to contact me about this. Several TBN'ers went to bat for me, as did my dealer, and I even sent an email to Kioti, but never so much as a reply was ever offered. Seems so simple...perhaps my fault that I didn't bug them about this more.
To those of you with units with less hours and who did not get in on the new warranty program, I sincerely hope that you will never have to go through this, and that my issue was a simply a "two in a million" type deal.
I'm seriously considering trading this unit in on another brand tractor...not that they don't have their issues as well, but i'm not a happy camper with Kioti right now.
I would like to personally thank the several TBN members who gave me advice and support throughout this whole ordeal, and I'll apologize now for this reply, since I know it won't be taken very well by most.