Motor Medic combined w/ Aviation Fuel got the saw running. 100LL @ the small airports, no Ethanol, much cheaper than the quarts at the box stores, some pumps are self serve via a credit card.
Their is a new AV fuel being rolled out "Swift Fuel" 94 no-lead, see if you can find it in your area....
[2 things I will add “Mechanic in a Bottle” Holy-Moly that stuff is amazing. We got an old ( actually in good shape ) school chainsaw running after a fuel pulls.]
Fantastic stuff! I saved a new generator with it after storing it with crap Sta-Bil.
Use Ethanol Shield from the same company. I’ve stored fuel for upwards of 4 years with it.