Kubota M 6800 loss of power

[HCJtractor]

My 10 year old Kubota starts to loose power when the fuel level gets to about half a tank. It begins to run as if it's about out of fuel, but then when I add diesel, it only takes around 5 gallons to fill it to the top. Once I fill it, it runs fine. But run it back down to about half a tank, and it sputters again. My gauge also seems not to be accurate, but not sure if that's related, nor is that a big issue. As long as I keep the tank pretty full, I have no issues. Is this a fuel pump issue, or something wrong with the fuel pick up in the tank?

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[boggen]

not a clue about your specific tractor. just thinking out loud of what i might check.
fuel filter clogging
screen maybe in fuel tank
fuel shut off valve not all the way open or rather barely open
vent in fuel cap plugged.
fuel pump issues.

 

[Tx Jim]

I owned a M4900 that acted similar to your tractor. I found a plugged tiny screen in the fuel shut-off valve on the water separator. I removed the screen and engine stalling problem was resolved.

 

[HCJtractor]

Thanks guys. That makes sense. I'll check that.

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