When you run it and are done close the fuel valve and let the engine run out of gas and die.
It will start every time.
I just got 5 gallons of alcohol free gas, E0. I am going to run all my small engines on it. I have been using the kind that comes in gallon cans for the string trimmer and leaf blower. It's pricy. E0 costs about the same as premium and I will mix my own 2 stroke fuel. I got a new wood chipper and will start using it in the mower. Next time I will bring home 10 gallons.
It's cheaper than fixing them every other year and rebuilding tiny carbs isn't my thing anymore. The new stuff has so many plastic parts in them that get brittle. I have a large string trimmer that I run a brush blade on. The fuel lines crumbled and it pee'd gas on my foot. I just fixed that one.
I had assumed technology would catch up and come up with plastics that dont die from alcohol but that hasn't been the case.