Question, did/do you notice the same operation w/the FEL mounted?
I want to think that the FEL joystick controller is similar to the one on my BX23 and it doesn't use a cable as the control lever is directly mounted to the valve. But, if you have the remote lever thats mounted on the right fender then it may in fact use a cable. Course there could be a huge difference between models and if so disregard
Is your FEL control lever mounted on the right side FEL support or on the right side fender?
I have read where the FEL valving could loose the float (regen) function due to water/snow getting into valve cylinders (there are two at the bottom of the control valve) and freezing, which disables the float (regen) function. The fix is to remove the cylinders one at a time, being careful to not lose the springs, seals and ball bearings, clean & lube everything up and before you put it all back together, to drill a very small hole (1/32's - 1/8th) at the bottom most part of the cylinder (take into consideration that the valve and cylinder(s) are slanted). This hole allows the condensation to drain which should keep it from freezing again.
Kubota started providing the cylinders with drain holes sometime in production so yours may have them. If so, take a hair dryer or similar heat source and heat the cylinder area of the valve, if you see water/condensation start to weep from the hole than you've probebly found the problem and you may not have to disassemble.
Course if the condensation has corroded the ball bearings in place then disasembly, cleaning and lubrication will still be necessary.
I did notice where you said this problem has been consistant since you purchased it. So did you bring this to the attention of the dealer while it was still under warranty? And if so what did he say?
You can download a free parts manual from tractorsmart.com and you can purchase a WSM (work shop manual) from one of our Kubota sponsors or your dealer if you don't want to go into the valving without a "road map".
One last point and I hate to ask but since we're troubleshooting we need to touch on it, are you sure that you're pushing the lever past the detent? It takes a bit more force to puch it past and some folks won't do it for fear of breaking the lever/valve. Just had to ask to make sure
Let us know and good luck
2004 Kubota BX23 w/60" MMM, Thumb, AM/FM/CD.
1966 Wheel Horse 856, Gear.
1966 Wheel Horse 876, HST.
w/50" sicklebar mower, 36" rotary mower, snow blade, alternator/welder.
The USMC, providing the enemies of the USA the opportunity to die for their country since 1775.