Ok, I knew you had to raise the deck all the way up before you set the height setting. However, I do challenge the notion that closing the valve won't hold it in place. First of all my dealer said it would. Secondly you can't move it when you close the valve, it is hydraulically locked in position. When you activate the lift handle with the valve closed it will not move.
Now, i realize it is not designed to work that way but after replacing three $275 position control assemblies I am ready to try anything. The mechanical parts will not hold up on my application. We have one field, I mean yard that is rough. I wish it was smooth but it's not, and the
B2620 is all I have to mow with. The next time it breaks I will fix it myself. It will cost a lot less then $275 and it will never break again. It won't be easily adjustable but it won't break.
Also, I know the anti scalp rolls are not meant to engage the ground all the time. But measure the metal thickness on the anti scalp roller brackets. It is not even 1/16" thick. Kubota probably pays less then .50 cents a pound for steel. $6 on a deck they sell for close to $2500 would triple the strength of those brackets.
One thing I have learned from owning several Kubota's. The Japanese are a lot like the Germans when it comes to owning their design flaws. Yep, overall they are exceptionally well designed, but they are not perfect. I would love to know how many of these brackets break a year. And I would like to know how many of these position control assemblies fail per year. For what we pay these things should not break when you are mowing grass.
One last thing, while they are improving things, they could add a drain hole in the seat so your butt don't get wet every time it rains. I know the seat is not supposed to touch the rain. Oh well thanks for letting me vent, I will probably sleep better tonight.