One more update - I'm up to 10 hours now. Fuel consumption seems very good. I cannot say enough for how well this thing starts up...cold, warm, hot...it just immediately starts with a little puff of smoke and zero hesitation. It barely cranks before it's running. It starts better than any other Kubota I've ever owned, including my 2018 MX4800 with it's common-rail electronically controlled fuel system.
Yesterday I used it for york-raking some major ruts out of the lawn. It worked great. I run at 2000 RPM in medium range for best productivity. I expected to operate in low range, maybe at a lower RPM, but the HST definitely seems a little slow compared to the B-series or other Kubotas I've run. High range is OK for just transporting on flat ground, but any inclines start to slow it down, even at wide open. However, there is enough modulation in the HST pedal to simply ease back in high and it can go up small inclines. Low is very slow.
I also did some bucket work. Right now I've got my MX's larger 6-foot bucket on the L2501, but it can still dig and transport larger loads of lighter materials. The loader is fast, but doesn't have a lot of breakout power, and lift is fair. I tried lifting my 800lb zero turn mower with forks on the L2501. It got it off the ground, but not more than a foot. The forks maybe weigh more than the bucket, but this thing doesn't have a ton of lifting power. Depending upon your expectations, that may be fine. For moving snow, mulch, brush, and dirt...no problem. For lifting heavy loads on forks, or by a chain on the bucket...I'd think you are limited to around 700lbs or so. The bucket does lift fairly high up in the air, which is nice...the quick attach works very smoothly, and the loader itself is a lot more rugged than some of the competition.
I strongly dislike the clutch to start, but have refrained from bypassing the switch because that would also bypass the clutch to PTO safety which I'd like to keep.
The coolant temp stays on the colder side. I wonder if this engine has a thermostat or just runs open?
Great tractor. I think it would serve very well for many people needing a general purpose machine, without spending for more power. In some ways, the 3301 and 3901 are not really worth the money because they don't really lift any more and are subject to the same relatively low-flowing pump. I guess more HP would help run larger implements though...and maybe the HST is faster.