B2620 MMM Height Adjusment

[lagomasino]

I tried the 60" MMM on my new B2620 this weekend for the first time. To my dissapointment, the height adjustment knob is practically unusable. Regardless of the setting, when I lower the deck, the knob spins around and stops at 1. From looking at the other end of the knob shaft, it looks like a circular step which depending on the setting, it is supposed to prevent the deck from lowering beyond that setting, but what actually happend is that it rachets the knob all the way down.

I just talked to the dealer and he told me that there are no service bulletin for that issue, although he acknowledged that he has seen that problem in other tractors and has had to grind the notches on that circular step piece at the other end of the knob.

I was wondering if anyone else has experience the same issue in the B2x20 models and how you had it resolved. Thanks in advance

 

[mtrain]

Yes we've seen this problem and just as your dealer stated, there is a service bulletin in regards to how to repair it. Have the dealer fix it as a warranty repair.

 

[Charlton John]

I tried the 60" MMM on my new B2620 this weekend for the first time. To my dissapointment, the height adjustment knob is practically unusable. Regardless of the setting, when I lower the deck, the knob spins around and stops at 1. From looking at the other end of the knob shaft, it looks like a circular step which depending on the setting, it is supposed to prevent the deck from lowering beyond that setting, but what actually happend is that it rachets the knob all the way down.

I just talked to the dealer and he told me that there are no service bulletin for that issue, although he acknowledged that he has seen that problem in other tractors and has had to grind the notches on that circular step piece at the other end of the knob.

I was wondering if anyone else has experience the same issue in the B2x20 models and how you had it resolved. Thanks in advance

Also do a search in this thread about 2620 MMM adjustment knobs there were many threads about this issue and how some have fixed the problem.

 

[lagomasino]

Thanks, I found that this issue has been adddressed under the "B2X20 MMM height adjuster" thread. What I am still not clear is about whether there is an official Kubota fix for this problem. My dealer said that there is NO service bulletin on that issue. He acknowledged seeing that problem and having it fixed by himself, but nothing official from Kubota. I get the impression from the other thread and the previous response that there is a Kubota fix. Does anybody have details on whether an official service bulletin for this issue on the B2X20 models exist?

My dilemma about this issue is that the tractor is now located in a very remote place in WV. Taking it back to the dealer I bought it from is a long trip (200 mi). Taking it to the nearest dealer is 45 miles one way. If it is a known service bulletin, any dealer should be able to fix it. I rather drive the 45 miles.

Very frustrating

 

[Evil the Weasel]

When I first got mine delivered, the deck had two settings: scalping and all the way up. Yep, it was adjusted wrong. They rolled it back to the dealership and it's working fine now. The blade height is off by just under 1/2" on any of the dial settings which is close enough for me. The adjusters on the lift arms are screwed in more than the manual says they should be, but the manual has other errors in it too.

 

[lagomasino]

I found some really nice pictures posted by RRbota on a somewhat unrelated thread "Anyone put Kubota's front quick hitch on their new B yet??"
This is quite an elaborate and carefully thoughtout fix.

 

[Evil the Weasel]

I saw that too, but it wasn't necessary for my situation.

 

[mtrain]

I stand corrected. It wasn't an actual service bulletin. It was a top product issue listed in the Kubota dealer's online service center. See this attachment

mtrain

 

[sedmond]

I've had my B2920 for almost a year without any problems with the mower deck adjustment. Until a couple of weeks ago when the deck starting jumping to lower settings. I found that I had to hold onto the adjustment knob and then slowly lower deck to get it to catch at correct height. And then try to avoid bumps which would make it bounce to a lower setting. I looked underneath and don't appear to have any sideways play in the link shaft as discussed in previous articles. There is a lot of play in the knob's shaft, but not much more that there always has been. Anyway, dealer is picking up tractor tomorrow to repair under warranty.

 

[lagomasino]

sedmond, That's exactly how I have to operate the MMM for now until I have the opportunity to take the tractor to the dealer. Unfortunately in my case, it is a long haul. The dealer told me to bring the knob assembly (the part that has the piece that looks like a circular step) and that they will fix that assembly.