Nothing? I just thought of something while scrubbing taters. Check the wires from your starter switch to the starter and the battery wires for shiny copper. Lift them up and carefully examine them with a flashlight if you need it. It may be a bare wire making contact with metal, an electrical short. Maybe you’ve got mice.
Back to din-din.
My old lawn-boy would not start last summer when I got back to the Phoenix Valley. Since my “lawn” is eight feet by twenty-four feet, I decided I was done with pull starters and tune ups for the rest of my life and got an electric mower.
Clean under the deck, sharpen the blade every two years I imagine and I am good-to-go, I am very happy that it starts when I push the button and squeeze the handle.
I think I am going to take my rototiller to my son in Michigan. They have gardens and such up there. Down here, we have cactus and weeds that are so tough you have to burn them out.