Lot of complaints on this site & others I'm sure, about the damage that can come from ethanol laced fuel.. Some have chosen to use premium fuel as it usually has little or no ethanol. Unfortunately, premium fuel is quite a lot more costly.. Anyway, another route to consider is the use of a Fuel stabilizers such as under the company name Staybill, (there may be others also)  which is available with an ethanol "stabilizer" under the name Staybill "360". Adding about 1 oz/ 5 Gal. of fuel is supposed to alleviate the ethanol issues.. Note; that company may have changed the branding on that particular product, so ask if you can't find it..    


Paul