Yeah I did this already, a lot of fuel came out, not sure if there was water in it or not. My dealer was in the area tonight and picked it up. They should get back to me in a couple of days as to what they have found.
Got tractor back tonight. All fixed. Fuel Injectors were replaced and she is running good again. Also got my ECU reprogrammed and they replaced some cracked interior panels.
Humm mine did the same thing yours the other day, I had been using the cutter for about 4 hrs, got to a spot that had a pretty good incline. Tractor really started losing power, after about 30 min of babying it, I noticed it slowly began to come back to having full power. Been fine since.
Folks, I think you need to check for H2O in the fuel and especially proper function of the fuel filter. Liquid water should not get through a functioning fuel filter but maybe it did in your case. The fact this happens on slopes and turns implies a sloshing issue. Actual water in the fuel can blow the tips odd the injectors when the water flashes to steam. You may have a defective fuel filter that passes water which blows the injectors.
There will always be a small amount of water in a fuel tank (from condensate) but not enough to plug a fuel filter.
I too wondered about the fuel slosh, I know mine isn't water , but wonder if it was something with the low pressure lift pump, maybe sucking air bubbles or something. I was close to empty, and after fueling back up and running for another 15 minutes or so it straightened back out as if it the air worked itself out. Had the same type of issues with our big tractors and combines over the years.