No. Ethanol doesn't clog carbs. Dirt clogs carbs. Ethanol can dissolve old o-rings, fuel lines, and such, however, most things manufactured since the mid 80's that still have carburetors are made with components that won't be affected by ethanol.
The main concern people have is fearing that ethanol will absorb water when stored, leading to problems. However, I find that a non-issue IF you follow your manufacturers recommendations on fuel and fuel storage. Been using 87 octane e10 since the mid 80's and never once have I had a fuel issue due to ethanol.
Think about it. I started driving in the 70's. Had to deal with frozen fuel lines at least once or twice a winter. Had to remember to add HEET to the gas tank regularly. Rebuilt carbs every 75-100,000 miles. And that's on cars that were frequently used. Leave a lawn mower or outboard motor with fuel in it and you were 50-50 as to if the carb was gonna get gummed up from fuel residue. Since the 80's when I started using 87 octane e10 fuel, I've never had a frozen fuel line. Never had to use HEET. Never had to rebuild another carb.
I'm convinced people that report ethanol related fuel problems in equipment manufactured after 1985 do not follow their factory recommended recommendations when it comes to fuel. They leave equipment sit with partial tanks in environments with widely changing temperatures, in storage containers that do not seal well, etc...
Get a couple gas cans, rotate them out into your automobile if it's been a few months. Only mix a gallon of 2-stroke fuel at a time if you're not going to be using it in a few months, etc...
Good luck with your particular equipment. Follow those manufacturer recommendations and you won't have any issues.
