Once the engine starts, I can run it for 2 or three hours and it runs just prefect. It is if I start it and turn it off in 3 or 4 minutes, it hums and does not want to restart. Sometime I get lucky and it hums and restarts.
My John Deere A105 riding lawn mower hums and then it will finally start just one time. Turn it off and it hums and will not start. I have changed the spark plug, gas filter, air filter, ignition switch, and solenoid switch, What is the problem?