Took safety switch off seat. Had tested and is ok. Told Kubota mechanic engine cranks and runs for approx. 5 minutes and cuts off like turning off with key. Try to crank in 3 to 5 secs, cranks and runs for about 5 secs. Let set for 3 to 4 minutes, cranks and runs about 5 minutes and shuts off again. Mechanic said it sounds like the solenoid. I will pull and let him bench test. Give me your opinion. Also he said a Kubota solenoid runs about 150 to 180 dollars. Can I purchase one cheaper at auto parts store, and if so where. Drained all fuel, added fuel conditioner, changed fuel filter prior to above. Put in new battery about 3 weeks ago. It ran fine up until now. Please reply. Would appreciate another opinion.