step 1; buy a good E-85 carb. Not a junk one
step 2 make sure pump and lines are alcohol compatible
step 3 pour E-85 fuel into tank and use this in the fuel.
https://www.walmart.com/ip/LUCAS-OI...SQkbEAQYAiABEgLrLvD_BwE&gclsrc=aw.ds
there is a learning curve just like anything else. Birdtracker