While you wait for answers, we may have found some information which could help you.
Click here for Find Problem Notkubota L2600DT- no start-no power to dash, starter, etc--?
kubota b2710 won't start?
i have a kubota r320s and the shut off solenoid wont work?
MY Kubota R420 seems to move slower going up hills or when pulling?
kubota diesel ?
ran tractor out of fuel, now i can't get it started?