Corn gas that sat too long. Carb needs cleaning. See it all the time here.
I've got a John Deere snowblower that only sat 10 or so months that now won't start. I think the carb needs cleaning but can't believe it clogged that quickly. It belonged to my MIL and her "kid" down the street who did her snowblowing never added any Sta-bil to the gas so now I've accepted a gift that's going to be a PIA or expensive to fix.
The carb is behind a cover that's held in place with the control knobs that won't come off. I think if I could get to the carb I could remove the bowl and clean it enough to get it running. If it's not one thing it's another.