If I'm not mistaken, all you have to do is change the engine oil & oil filter, change the hydraulic filter and remove and clean out the HST screen. Used to be that Kubota required that the hydro fluid be changed but they don't anymore, it should be stated in the maintenance requirements in your owners manual.
The engine oil & filter change is a piece of cake, changeing the hydro filter and removing and cleaning the screen without draining the hydro fluid will pose you problem. But having said that theres been a few industrious posters share a couple tricks of the trade to accomplish them with minimal loss of hydro fluid.
The hardest part of the engine oil & filter change is the R&R of the MMM. You can get at the filter without removing the MMM by it'll get messy if it stays on when you change the oil (unless you come up with some industrious channelling
Having the MMM off will give you the opportunity to visually inspect the underside, making sure the fan has all it's blades and everything looks good & tight.
It's been posted that theres not much HST fluid loss on the HST filter change. Alot relies on the system remaining "closed" during the procedure. Closed meaning that the dip stick remains in an the HST and the oil fill cap also remain tight. This supposedly creats a partial vaccum which aids in keeping the fluid in. Be prepared that the original HST filter is reported to have been installed by a very strong individual and that it will take some grunt to get it off. It's not a backwards thread so just be prepared to put the muscle to it. Once off you'll want to have the new one at the ready to immediately spin on. Tighten it just like you do your cars engine oil filter, no more, no less and you should be GTG. You'll probably loose about an ounce or so of fluid but be prepared for the worst. FYI, I've never replaced my HST filter with fluid still in the HST so I'm just reposting what I've read from those that have done it.
Now the strainer will be alittle more complicated and requies a special tool. Actually 2 depending upon the method you want to implement.
Procedure 1: this requires either a cork or rubber stopper to immediately insert into the hole where the strainer comes out of. Using a knife or similar, taper one end of a 1" cork or rubber stopper down to approx 3/4" and the tapered end is what seals in the hole. Keeping in mind that you want to try to maintain that partial vaccum you can expect to loose an ounce or two. With the strainer out look for any slivers of metal/aluminum and don't be overly concerned should there be some in it. It's all probably left over from the casting process and besides, thats what breakin does and the strainer done it's job to keep it from circulating back in to the HST.
Clean it w/brake cleaner or kerosene, blow dry then reinstall it, quickly
Procedure 2. I've seen where a couple posters actually used a shop vac held over the dipstick or oil fill opening to "create" a more powerful vaccum in the HST while they R&R'ed the filter and screen. They had to enlist the services of another to hold the vaccum over the hole while they R&R'ed the filter & screen.Expect a similar amount of fluid loss as #1. One fellow said a bikini clad young lady is the best assistant but I would be afraid that your concentration may not be where it should be
As w/procedure 1, clean and reinstall.
Why not puchase the material from your local dealer?
If you do want to mail order it, you may wwant to try one of our sponsors, www.messicks.com
as they do alot of shipping & internet business. If you go to their site, they also have a pic & video section where they detail these maintenance procedures. I'm not sure about the HST tricks but they do cover the engine procedures.
edited to include a link to Messicks 50hr instructions
I've done all my own maintenance since new and if you can change the oil & filter on your car your BX will be much easier. The 50 hr for my BX23 called for an HST fluid change also so I just R&R'ed the filter & screen after the HST was drained so I haven't tried those HST tricks. All subsequent HST oil changes will require a fuid change to so it'll be much easier for them.
Your owners manual will detail all thats required at each maintenance interval and I've followed mine pretty much to the "T".