I have a b2920 setup the same way. I bought mine very lightly used (year old with just over 50 hrs), but the price you're seeing is around what I was seeing on new machines at the time. You'll be very happy with it and surprised by what it can do. I still am finding new things for mine. You'll find its great for the new lawn, I redid mine and discovered I could spread and level 10 tons of top soil per hour after I got good at it. The BH is great too and good for moving big rocks, stumps, etc. One caution is to make sure to get the rear tires loaded and be careful on side slopes with the BH on (its VERY heavy and until you get used to it you want to get a feel for the machine with it off). I would also highly recommend building a dolly for the BH, here's a link to my build thread. http://www.tractorbynet.com/forums/kubota-owning-operating/236155-bh65-backhoe-dolly-build.html
It should be fine sitting for periods of time, I make sure to start mine monthly at least (usually use it every weekend). It should last a very very long time, a dealer near me had a 1986 model that was still in great shape when I was shopping!
Sounds like crap to me.
For tire ballast, water, calcium chloride, antifreeze, washer fluid, and beet juice are all popular liquids that are used. Region, climate, budget, and other factors can determine which one is most appropriate.
When people refer to loading the rear tires, does that mean filling the rear tires with ballast of some sort? What is used to fill the rear tires? How much weight does it add?
Also, has anyone heard anything about Kubota supposedly removing "metal" from the axles of newer CUTs? I'm not trying to start a rumor or a battle, but when I spoke with Kubota competitor dealer today, they mentioned that Kubota has been having axle breakage problem because they are removing metal (strength) from the axle housing, etc to reduce costs and be more competitive? I'm assuming that this is complete crap because I haven't heard a peep about this and highly doubt Kubota would cheapen up their machines in this fashion?
Thanks for the information on tire loading.
What should I expect to pay for Rimguard tire loading? Is it just for the rears? I'm assuming that a loaded rear tire on a Kubota B series is gonna weight about 400lbs if the 600lb number is just for the rears?
Also, any idea what a B2920 weights complete with FEL and BH? I know the tractor weights about 1,550 and you mentioned 1,400 for the BH... Is the loader about 600lbs?