[mizzack]

100% agree on the ethanol-free gas to reduce carb gumming.

For overwintering, I just detach the hose after the fuel filter and drain the remaining mower fuel back into the can. Or, on small push mowers where this isn't possible, use the fuel shutoff and just leave the gas in the tank.

Then run the mower until it dies. Doesn't take more than a minute.

Finally, unscrew sparkplug(s), pour a teaspoon of motor oil into the cylinder (keeps rings from seizing/rusting).

Leftover gas in the can gets put into vehicles at the end of the season so I'm not storing stale gas.