[dippasan]

As a former mechanic I can tell you that E-10 has been creating havoc with all kinds of internal combustion engines.
To eliminate any future problems with "occasional use" motorized things, use the Startron Enzyme fuel treatment.
It comes in a light blue bottle and the concentrated 16 oz bottle will treat up to 256 gallons of gas. It can be bought almost anywhere i.e. Walmart and auto parts stores.
I have several snowmobiles and motorcycles not to mention a generator, lawn tractor, chain saw etc etc. Stuff that potentially sits for quite some time. Since using the Enzyme treatment I never have a problem. I took out one of my motorcycles last week and it hadn't been driven since March. It fired right up and ran perfect. I have cleaned more carburetors for family members and friends in the last couple of years then I care to remember. Use it in anything gas powered. 2 stroke, 4 stroke...doesn't matter.

Good luck!