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In Reply to: Re: Yamaha generator question posted by PackerBacker on May 24, 2011 at 09:08:36:
Ethanol eats up the rubber (not really rubber, but that's close enough) pars in carburetors, mostly the fuel pump diaphragm. Takes a couple years, but they get brittle.
Ethanol likes water. The condensation that normally forms beads of water on the bottom of the fuel tank (or your gas jug) mixes with the ethanol, and causes rust on the steel parts, and corrosion of just about all other metals.
New cars are made with materials that withstand the ethanol, and it won't be long before small engines follow suit.
Not much you can do, except try to find ethanol-free gas, or put in a carb kit every few years.
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