Help with fustration first time using b2620

[Tcfake613]

Ok folks. Two issues today first time mowing. Hopefully this is something I'm doing wrong and maybe you guys can give me a hint. Brand new B2620 with 60"MMM and FEL. Loader is off for mowing today. No problems with that.

1. Sometimes tractor will not start. Turns over fine... Spits a little diesel smoke and dies. I try six or seven times and it eventually fires. Let glo plug heat for about 5 sec each time.

2. Mower deck keeps dropping on it's own. Set it at 3 and one dot... Mowing along and bouncing around a bit... My yard is not that rough... Deck dial drops to about 2 1/2.


Any ideas? Can't even finish mowing right now due to frustration.


Thanks in advance.

 

[RoyJackson]

First, read the manual thoroughly!! I don't think you're doing anything wrong...but make sure you follow the starting procedure in the manual.

Second, assuming you aren't doing something wrong (and I don't think you are), contact your dealer. Your Kubota should not be having any issues this early in it's life.

 

[Verticaltrx]

1. Sometimes tractor will not start. Turns over fine... Spits a little diesel smoke and dies. I try six or seven times and it eventually fires. Let glo plug heat for about 5 sec each time.

2. Mower deck keeps dropping on it's own. Set it at 3 and one dot... Mowing along and bouncing around a bit... My yard is not that rough... Deck dial drops to about 2 1/2.

1. These tractors are very cold blooded, even when it is 90* out mine needs a few seconds of preheat to start smoothly. Once it's been run for a while it starts fine without preheat. Try preheating for 10sec, set the throttle just above idle, then crank and it should start right up. In real cold weather I'll preheat mine for 15-20sec sometimes. I think it's just the nature of an indirect-injection motor. Also once it gets broken-in a little it should start better.

2. I'm not familiar with the setup on the B2620, the only MMM setup I've used is on a B7610 which has a ground contact deck. I would think that something is out of adjustment in the height mechanism. It shouldn't change the setting by itself no matter what. Probably something simple like not enough tension on a detent or something, but I'd have the dealer look at that. It's under warranty, and it was also their obligation to set it up right before delivery.

 

[Tcfake613]

Thanks Roy... read it cover to cover at least three times this week. I don't think I'm doing anything wrong either. This isn't rocket science. Frustrating thing is that it is now Saturday afternoon and dealer will not be avialable till Monday morning and I've got two acres to mow.

 

[bp fick]

I've had two 'Botas. My D722 required a little longer glow time, even in 30 or 40 degree weather. Try that.

My 1005 is not fussy nearly as much. Still needs a few seconds, but not half what they other did. You'll find what suits that engine, with some experimentation.

Also, crack you throttle, before beginning to 1/4 or 1/3 or even 1/2. This often helps as well. I suspect, I hope, you'll find the right formula and it'll roar to life the virtual instant you crank 'er over. Mine do.

 

[abeal]

1. Not sure about the starting...I have a B2320 and a couple seconds of glow plugs and it always starts. We're neighbors so it's not weather.

2. On the MMM...common issue with them. I had the same problem after a while. If you look underneath, the knob has round notches in it and the MMM will have a lever that will rest on the round notch. The notches seem to fill up with paint and they do not hold the mower well. You need to get a large chain saw file and grind them out a little. It doesn't hurt to use a dremel on the MMM piece to make it fit better in the notches either. I'd send you some pics but I have to get ready to head out for a while.

 

[bilrus61]

Nobody has accicentally put some gas in the fuel tank have they? We don't have a mower on our Kubota so can't help you there.

 

[Tcfake613]

Nope... no gas in the tank.

Just pure Sunoco diesel....

Since it started raining... again... I pulled the B2620 into the garage and started tinkering. I started the tractor about 20 times in the garage and it fired right up... go figure. I hope there is not some safety switch that is not right or going bad. We'll keep an eye on that.
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The deck is proving to be more of a problem.

I took the deck off to check the dial height operation from underneath. The dial seems very loose to me.... wobbles around a lot up top. I also noticed that if I lower the deck quickly it can be enough to knock the dial down a couple of notches. I loosened up the spring clip and tried to snug it up by moving it in closer to the notched dial underneath. Still seems very wobbly.

I hope this is not a common occurance. I cannot even do one pass across my yard without the deck falling about 2 inches.

Thanks for all the suggestions everyone... I'm reading them all and trying various things.

 

[e171fish]

These threads may help with the MMM issue.

http://www.tractorbynet.com/forums/kubota-owning-operating/127053-b2x20-mmm-height-adjuster.html

http://www.tractorbynet.com/forums/kubota-owning-operating/144949-b2620-mmm-height-adjusment.html

 

[Tcfake613]

Thanks fish... I was just reading those threads and if I would've taken the time to do a proper search instead of being impatient I would've probably found them. I appreciate the links!

Yeah... this is definitely my problem. Some of these threads date back to 2008. I just had my tractor delivered on Monday and the same poor design still exists.

I can't tell you how disappointing this is to me! I will now have to contact the dealer to have them make the mods they should've made before I took delivery. When you pay this much for a machine... this seems unacceptable to me.

 

[ChuckinNH]

Thanks fish... I was just reading those threads and if I would've taken the time to do a proper search instead of being impatient I would've probably found them. I appreciate the links!

Yeah... this is definitely my problem. Some of these threads date back to 2008. I just had my tractor delivered on Monday and the same poor design still exists.

I can't tell you how disappointing this is to me! I will now have to contact the dealer to have them make the mods they should've made before I took delivery. When you pay this much for a machine... this seems unacceptable to me.

I have to say that it is very discouraging for those of us who are considering buying one of these mowers too. I thought that Kubota had a fix, and a procedure for dealers while they intergrated the new more agressive design. I wonder a bit too if your mower might have been sitting in storage for a while?

 

[Tcfake613]

I have to say that it is very discouraging for those of us who are considering buying one of these mowers too. I thought that Kubota had a fix, and a procedure for dealers while they intergrated the new more agressive design. I wonder a bit too if your mower might have been sitting in storage for a while?

Well Chuck... I too am very dissappointed. The dealer had no 2620s displayed and mine was assembled out of a crate. After assembly I then tested it out but did not mow with it.

I don't think it could've been that old. My S/N is 55465 so not sure how I get a manufacture date out of that.

One of the reasons I bought this over a JD2520 was because there were reviews of difficulty setting mower height on the JD.

 

[abeal]

I can't tell you how disappointing this is to me! I will now have to contact the dealer to have them make the mods they should've made before I took delivery. When you pay this much for a machine... this seems unacceptable to me.

I was in the same boat but it actually ended up taking less time to fix than it would take to call the dealer.

 

[Tcfake613]

Much better mood right now. Spent about two hours this morning going over the deck assembly. Releveled the entire deck. It is now to within 1/16" level all the way around. It was over 1/2" high in the front when I started and not level side to side.

Messed with tightening the cam a bit but I don't think it did much good. I employed a technique mentioned by another poster in one of the threads about this problem which involves setting the height and lowering the deck slowly till it touches the cam. Then lock the PTO lowering speed valve. This keeps the deck locked in position... I assume by not putting any pressure on the cam. It held pretty good.

Got the entire lawn mowed. I've got to say I was really happy with the way this tractor works in every other way. Maneauverability is great. The pedal design is working great for me and I come from a JD side-by-side design. After one round... I think I'm liking this pedal design better! It was very natural for me.

The ground was VERY wet... about 2" rain yesterday. The R4s made no marks whatsoever.

OK... so after a day of frustration I am really liking my 2620 today. Still aggravated I have to have the cam fixed, and I think this should've been taken care of already, but I'll call the dealer tomorrow and get it done. Once I get that fixed, I'm seeing many happy years on this thing.

Thanks again to everyone for all the suggestions/hints/etc. This forum is invaluable!

Also, no starting issues at all today. Maybe it was me...

Here is a pic of 2620 after finishing mowing today:

 

[charleyfarmall]

5 seconds on the glow plug isn't nearly enough time. 30 seconds or more on a cold engine. None on a very warm engine.

 

[ChuckinNH]

Here is a pic of 2620 after finishing mowing today:

View attachment 231943

Looks like it got a bath after mowing, but that is a really nice looking unit. They are like go carts with the loader, etc. off.

Edit: By the By, that is an earlier version of the mower. The new ones have wider rollers instead of the anti-scalp wheels yours has. I think I like your set up better, but the wider rollers probably stand up to owners forgetting to set them right before driving over the deck. That might explain why the mod on the height adjustment wasn't made.