I have a 2015 Branson 3520H that I bought new in 2015. It has about 700 hours on it. I have had four problems with it in that time.
I did have the instrument cluster go out on it at 375 hours and it cost $800 to replace. Apparently the instrument cluster is NOT part of the power train warranty, even though it is what monitors and controls the power train. Go figure.
Another issue I had was one of the springs that holds the hydrostatic pedals in place broke. That meant that I couldn't let go of the pedals and have the tractor sit still. I took both springs off and found comparable springs at Tractor Supply. They were tougher, stiffer springs, but they work fine and I imagine they will last forever.
One of the springs that holds the FEL lever in the middle is broken. This causes the fel bucket to slowly curl up. I have temporarily solved the problem with a bungee cord hooked to the bottom of the lever and down to the door hinge on the little glass panel. To fix it properly will require me to disassemble the valve assembly and replace the springs. I have a new valve for adding a new hydraulic port to the FEL that I plan on installing this summer, and will fix the main FEL valve springs at that time.
The damned DPF! My 2015 tractor was the first year model in which the EPA required a DPF. I don't run my tractor full throttle,plowing fields all day so the DPF would get clogged and kill the engine. I had to load it up on a trailer and take it 100 miles to the dealer twice to be cleaned out. The third time I asked them if there was anything they could do to ameliorate the problem. The guy said, "well, we can make it 'breathe' a little better for you" wink wink. I said, "DO IT". After that I haven't had a DPF clog issue since. It does smoke a little bit from time to time, but not like it would if it had no DPF. I presume they drilled a few holes through the DPF media but haven't been curious enough to take it off, open it up and have a look. The first time I had a DPF clogging issue I had a local muffler shop make me a regular muffler for it and I'd swap the DPF out for the muffler everytime I needed rescue it or to transport it. I still have the regular muffler for it, but i haven't used it in years. With the regular muffler it does smoke a lot, is much louder but seems to have more power. I like the modified DPF better than the regular muffler even with a slight reduction in power.
The most annoying and repetitive minor issue I've had is the front tires. I simply cannot get them to properly hold air. If I don't check them for proper inflation everytime I use the tractor, one of them will pop off of the rim. I never can get the bead to seat right on the rim myself and whenever that happens I have to take the tire into a tire shop to get it fixed. I've tried slime, and other things but that is just a waste of money and time.
Most tire shops give me trouble, not wanting to work on agricultural tires, but they all eventually fix it for me. I don't know why tire shops are such jerks when it comes to ag tires, but they are all crappy to me when I take on in for repair. Many times they end up not charging me but not charging someone for seating and airing up a tire is not enough apology for treating me like a fool whenever I arrive.
Otherwise my tractor is in good shape and works great. I change the fluids on it at the recommended intervals and quickly fix things when they break.
The dealer I bought my Branson from was in Berthoud Colorado and did go out of business a few years ago. There is another new dealer in Peyton, Colorado which is much closer to me. Their flagship brand is McCormick, which is a re-badged Kukje / Branson, so I should be able to get any parts or service I need from them, but I don't imagine I'll ever need a dealer again now that my warranty is expired. I'll just buy my tractor parts on line and do the work myself.
So there's my first hand experience with a Branson tractor. If I had it to do over again I wouldn't hesitate to buy another Branson; though I'd get a bigger one. Always get a bigger tractor than you think you need.
Update:
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Oooh. One more issue I forgot is one of the spring/hydraulic struts that holds the hood up died. They are about 125pound struts and the hood is too heavy for just one of them to do the job.
I couldn't find the exact replacement for them easily, quickly and cheaply, so I ordered a pair of 150 pound lift cylinders from Amazon for about $18 and replaced them both. The new ones are 17" and the original ones are 16" so I had to drill a new set of holes in the steel bracket inside the engine compartment that they bolt to, which was no big deal. Now the hood comes up quick and stays up while I am washing the tractor, changing oil or cleaning the air filter.
In case that happens to you, the replacement struts I got work great, and are these:
https://www.amazon.com/gp/product/B093DGL2R5
If the forum removes the link just search Amazon for the item number: B093DGL2R5