Well, I sure hope that doesn't happen to me, because I dread working in the cold. This is a subcompact and not a big tractor that is easy to crawl under. When the weather is freezing, its even worse due to my arthritis. If the tractor won't start or if it quits, it's staying right there until weather turns fair again.
But I'm hoping maybe I lucked out. I went outside, started it up and ran it at med-high rpm (estimating about 2200) for about 10 minutes until temperature gauge went up to 1/3. No skipping, ho stumbling, no hiccups. Ran smooth the whole time. I presume I'm going to be OK until I get the chance to swap out the filters again, and rig up a water separation device, which Kubota should've done from the factory. The filters (2 of them) are these tiny things you'd expect to find on a home depot lawn mower. You know the ones, clear with orangish pleat material and molded nipples. One filter is underneath (not easy to get to) and is behind the lift pump, which itself looks like a metal body fuel filter. The 2nd one is installed on the engine in front of the injection pump. That's it. I tarped up the tractor so I won't have to sit on snow covered seats and foot rests and will hope for the best for Friday morning. Thanks for all the advice. Crossing my fingers and will report back in a couple of days if there's anything worth reporting, that is.