Kabota L3200 HST foot pedal safety swithc

[Chain Bender]

Been having trouble getting my tractor to turn over. Once I got the forward/reverse foot pedal stomped into the perfect position she fires up in less than one roll over. Today I could not for the life of me find that magical spot to get her to turn over. Pulled the safety switch out from under the dash and bought a new one. I put the new detent switch back on the bracket exactly like the one I took off. EXACTLY. Bolted it back under the dash. She turned right over but won't start. I pulled the shroud off the side of the linkage and adjusted the "adjustment nut" in and out and have not been able to get Bettsie to bust off.

Need some guidance on what to do first. From what I can see and feel, when the forward/reverse foot pedal is in the neutral position the detent pin is pushed as far as it will go into the safety switch. I adjusted the "travel nut" one full turn at a time and still was unable to get it to start.

It's still chained down on the trailer, but I'd rather not drag it 50 miles to the dealer and pay them $82.50/hour if it is something I can resolve myself. Any and all suggestions are appreciated.

tks,
Chain Bender

 

[k0ua]

A literal reading of your post would indicate two separate problems.. which is it? The tractor would not crank? or the tractor will not start? They are two totally separate things. You stated in your first sentence:

Been having trouble getting my tractor to turn over. Once I got the forward/reverse foot pedal stomped into the perfect position she fires up in less than one roll over.

That would indicate to me the neutral safety switch controls the start relay Which has nothing to do the fuel shut off system. So it would appear your tractor originally would not reliably crank. Now you are saying that your tractor cranks just fine, but will not start.

She turned right over but won't start.

Ok your original problem is fixed. You are done with the neutral safety switch.
Now is this what you meant to say? The engine still will not start and run. but Cranks fine?
If so, you have another problem now...lack of fuel, fuel shutoff solenoid not operated, relay and timer circuitry not operating the fuel shut off solenoid..

Please clarify what the original problem was and what the problem is now.
Thanks
James K0UA

 

[Chain Bender]

Yesterday I was bush hogging. Stopped, turned off the PTO and turned the motor off. Fuel is full, fuel filers are new.

When I went back this morning the motor would not crank over or turn over at all. That happens sometimes when the forward/reverse pedal isn't sitting just right. Usually just a step down on the forward part of the pedal and try again and the motor will crank/turn over and then run just fine. This happened a lot and too much last year and I took it back to Kabota and they adjusted the travel nut just below the floor board on the right side and she was good to go. When I bought the new safety switch this afternoon I spoke with one of the mechanics. He said if it turns over and doesn't start and run I need to adjust the travel nut on the foot pedal linkage. I've done that with no results.

 

[k0ua]

Allright here is what I have been able to dig up by myself about testing the neutral safety switch.. the Tractor will NOT crank if the peddle is not centered, or of course if the switch is defective.. It has nothing to do with the fuel system, it just prevents the tractor from cranking. So your problem with the Neutral safety switch is solved.. now on to fixing the problem of the engine not starting/running.



Ok. is there fuel in the tank,? is the valve on the fuel filter turned on,? is the filter cup full of fuel.? Is the fuel stop solenoid pulling in.. Put your hand on it and have someone else turn the key to the ON position, you should feel it and hear it.

James K0UA

 

[k0ua]

He said if it turns over and doesn't start and run I need to adjust the travel nut on the foot pedal linkage. I've done that with no results.

That is not what the owners manual suggests. It says if you press the treadle pedal any direction but nuetral the tractor will not crank. According to the owners manual. All 3 safety switches Clutch, PTO and Neutral pedal just prevent the tractor from cranking.. NOW the seat safety switch prevents shuts off the fuel solenoid, and would prevent the tractor from running.. Can you wire around it to see if the fuel solenoid can be pulled in? did you perform the fuel solenoid test I spoke of in the last post?

James K0UA

 

[Chain Bender]

Normally I can just stand on the ground, push in the clutch with my let hand and turn the key with my right and she starts right up. While it is warming up I usually kick the tires or something. I've sat in the seat and stood on the ground and it will crank/turn over great. It just want fire up and run. It was running fine when I turned it off. Switch was replaced and it turns over but won't run. I agree it sounds like no fuel. Glow plug light on dash says glow plugs are working.

 

[k0ua]

Normally I can just stand on the ground, push in the clutch with my let hand and turn the key with my right and she starts right up. While it is warming up I usually kick the tires or something. I've sat in the seat and stood on the ground and it will crank/turn over great. It just want fire up and run. It was running fine when I turned it off. Switch was replaced and it turns over but won't run. I agree it sounds like no fuel. Glow plug light on dash says glow plugs are working.

As you know, if fuel is being injected into the cylinders in time, and provided your valve train is not broken or there are large holes in your pistons the engine must run. Therefore fuel is not being injected into your cylinders.. Did you do the fuel shut off solenoid test I mentioned? Does it sound/feel like it pulls in?

 

[Chain Bender]

no sir on the fuel solenoid check. It's dark now and I don't have time to fool with it. I'm having prostate surgery first thing in the morning. Betsie is gonna have to wait a week or so.

tks all for your input. I'll check those things when I get all the clear plastic tubes out of me next week.

 

[k0ua]

no sir on the fuel solenoid check. It's dark now and I don't have time to fool with it. I'm having prostate surgery first thing in the morning. Betsie is gonna have to wait a week or so.

tks all for your input. I'll check those things when I get all the clear plastic tubes out of me next week.

Oh Wow.. best of luck in the surgery and the Tractor..

 

[k0ua]

I have thought about this some more.. I sure wish I had a schematic on this.. BUT. I do remember on the Kubota, if you get up from the seat AND you have your foot on the treadle pedal, the engine will die.. Fuel shut off. So there must be a second circuit that goes to the fuel shut off circuitry, or it monitors the condition of the Neutral switch in some manner.. SO. There is more to this than I alluded to with the Neutral safety switch..Somehow the fuel solenoid is not being energized. Man if I only had a schematic..:mur: