I went from a BX to a B2601.
Yes, in terms of footprint it's pretty much a BX that's taller (and very slightly longer). That's not a bad thing - basically every Kubota model is about 10-15% bigger than the one below it, so actually every step in the range is about 10-15%. BX -> B -> LX -> L -> MX -> M. Each step is only 15%, so you may as well buy an M....
The MMM on the B is dramatically easier to remove than the BX. I have a video of me doing it - 1 minute off, 2 minutes on. You do have to lie on the ground to attach the driveshaft, but there's way more clearance on a B than a BX, so it's not actually hard - it's just the angle isn't good to do it without lying down.
Kubota were way smarter than you think when they designed it, but their user manual writers apparently didn't talk to the engineers, so they don't actually tell you about most of the clever stuff they did.
When you go to take it off, you set the mower height to zero. So when you put the mower down, it goes all the way to the ground, you can pull the lift pins without lifting the deck at all. Pull the driveshaft off (that's pretty easy, remove the front. Put the ramps out and drive over it - no faffing around pulling it out sideways. You do need to go in low ratio and 4wd, as otherwise the deck skitters around when you try to drive over it.
Putting it back on, you drop the arms first, then drive over it. There are ridges on the deck that guide you so your wheels are in the right place. The arms have little funnels on them, they self centre. You can lean over the side and see the arms - I usually release the pins, then get back on and rock back and forth a bit, lift and lower the arms, and the pins drop in. No manual lifting of the deck. Attach the front, then lift it a bit before attaching the driveshaft - if it's hard on the ground (zero height remember) the blades won't turn, so it's hard to attach the drive shaft. If you lift it a bit, you can turn the drive shaft easily enough.
The B lifts about 30% more on the loader than the BX, but it lifts more than twice as much on the 3ph. Depends what you're trying to do I guess, and how much you're losing in quick attaches and implement weight.
I have never had fuel filter issues on the B. I didn't on the BX either. What sort of fuel filter issue are you having, and do you have either dirty fuel or fuel that's growing algae in it? Sounds more to me like you need to resolve your fuel cleanliness?
I made this a few years back on the measures for each size machine - the large B (B2650) is now the LX, but the measures are basically the same.
A table I had made for BX and B01 when I was looking. I've seen a few questions on differences, so thought I'd post the full table including the B50 series (and now L2501 as well), because lots of people ask about the differences. Really no question or point in the post beyond contributing...
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