B2910HSD won't start

deminin · Aug 14, 2004

B2910HSD won\'t start

I have a 2002 B2910HSD with about 180 hrs on it. In the past couple of weeks, I have had a strange trouble that has me stumped...perhaps someone else has run into this. One two occasions, while digging dirt, with the FEL, to fill in around the yard, I have killed the engine. I guess I overloaded it, and it grunted and stopped. In the past, I just pushed in the clutch, and hit the key, and it starts right back up. On these two occasions, the tractor went dead and wouldn't start. The first time, I fooled with it for quite awhile, and finally got a tow rope and come-along to pull it back where I could get under it to look for a loose wire, etc. After pulling it back a couple of feet, It started right up. The second time, I pulled it back, and again, it started right up.
It looks like I have a safety/overload switch that may be going bad, but without a wiring diagram, heaven only knows which one, or where it is. Something detects an overload condition when I am moving forward under heavy load, and kills the ignition, yet just moving the tractor backwards a couple of feet restores the circuit. This is a real pain, that I would like to fix. Has anyone had a similiar trouble, and been able to figure it out? Also, does anyone know of a source for a Kubota 2910 service manual? I can't find any for this model on the web, and am waiting patiently for Kubota to answer an e-mail. If I had a real service manual with electrical wiring diagrams, I'm sure I could figure this one out. I basically hate to take anything to the dealer if I can fix it myself.

Thanks, in advance,

Don M.

ronjhall · Aug 14, 2004

Re: B2910HSD won\'t start

Don

The B27-2910 series <font color="orange"> Kubota's </font> have an HST neutral switch. The pedal may not have returned to neutral position. Next time you have the problem try moving the HST pedal while turning the key.
Your tractor should not stall when digging with the FEL. A common mistake with HST tractors is to push down on the HST pedal when engine starts to bog down. This just makes it worse and stalls the engine. Try doing your digging with the transmission in low range and the RPMs at about 2000.

_RaT_ · Aug 14, 2004

Re: B2910HSD won\'t start

In other words, your tractor will start, it just won't turn over. There is a difference because if it turns over and won't start, you may have a fuel problem or a injector pump solenoid electrical issue. An electrical problem such as the PTO, HST, clutch, seat etc interconnect swith will prevent the starter solenoid from engaging thus keeping you from turning over your engine. This appears to be your issue. I always like to eliminate the problems rather then try to figure out who the culprit is. Your engine relies on air and fuel and something to turn it to start the compression process. I like to be sure that I am getting fuel. If your getting fuel, it will be evident at the injectors when you crack them. This requires the engine to turn over. That is not yet your problem. Since you have moved the tractor and the problem was resolved, you can pretty much figure it's probably electrical. This is a difficult problem to analyze since so many variables come into play. Check your battery/cables. Seat switch, PTO switch, clutch switch, HST switch. All may or may not need to be working to have the starter turn over. Go over each one either by a simple tap as you would do with the PTO, clutch, HST. Those 3 will keep my Kubota from starting. If I was checking my tractor, a quick check of the clutch switch would be in order followed by a HST pedal switch check. If all the interlocks are OK, then it is possible you have a bad starter or starter solenoid. This assumes the battery is good.

In short:

Battery/Cables
Interlocks
Starter

deminin · Aug 15, 2004

Re: B2910HSD won\'t start

Ron,
Thanks a bunch...you put me right into the ballpark! I got under the tractor this morning, and saw the problem within minutes. The Neutral Switch seemed ok, but there was a bind in the Speed Control linkage. Right under the reverse pedal, there is a welded bracket which hooks to a clevis, which in turn operates the linkage to the HST. This clevis was gunked up with debris and causing the bind. I took it apart, cleaned it all out, spread the clevis jaws slightly, and put a light layer of silicone grease onto the moving parts. Now the speed control moves freely, and returns to center real easily. I will add cleaning and checking this area to my maintainance schedule...as I do a lot of brushhogging and dirt work. Plus, I guess I will have to improve my technique for digging with the loader. I will have to keep reminding myself that this is not a Caterpillar...even though it tries to work like one.
Once again, thanks for the tip, and if Kubota has a factory service manual available, I'm gonna get one.

ronjhall · Aug 15, 2004

Re: B2910HSD won\'t start

Don
Glad to hear you got it fixed. /forums/images/graemlins/cool.gif
A Work Shop Manual is available.
That is how I found out there was a switch.
You should also order the parts list.

Henro · Aug 15, 2004

Re: B2910HSD won\'t start

<font color="blue"> You should also order the parts list. </font>

Or perhaps even better...to to Tractorsmart.com and download it for free... /forums/images/graemlins/smile.gif

Work shop manual you still have to pay for though... /forums/images/graemlins/frown.gif

deminin · Aug 16, 2004

Re: B2910HSD won\'t start

Yessir...I just ordered the WSM. The tractor is just about out of warranty, so a WSM will be well worth having. I downloaded the parts manual several months ago from Tractorsmart, and that allowed me to find these safety switches quickly. I've got most of the tools to fix my own stuff, and with a good cookbook, hopefully I can avoid the ridiculous dealer maintainance charges.