All above comments are good, drain the carb. Running it "dry" may
leave a small amount of fuel which will evaporate and leave debris
which may be sucked up and clog jets the next time you start it. I
have used Berryman's B-12 fuel additive for many years in outboards,
motorcycles, generators, snowblowers and cars on an ongoing basis
with no fuel related problems. No affiliation and other products may
work as well? The most important thing is to drain the fuel bowl, and
yes, the impeller won't like being run dry.