read it but want more input
I clerked in a small engine shop for a time. Second generation small engine mechanics.
Use premium gas.
30 weight oil.
Change oil and filters when funky.
There was a huge difference in the equipment that was used daily or weekly vs. the equipment used seasonal or once per month or less. If used more often, the engine lasts longer (fuel system does not sweat or get gummed up). I crank my mower once per week, year round and run it enough to at least get the engine hot. If you cannot run the engine weekly for some reason, as others have posted, draining the fuel system is the second best solution. And I do use a couple of drops of fuel additive year round. My mower is about 15 years old and rope start so it needs to start on the first pull. LOL