I used one for a year or so. It's a loud engine so make sure that you have decent mufflers for it. I used the same fuel that I used in a ST3000 and a 22/8 prop on the particular model that it was on. Considering that it is a 3.6 cube glow the fuel consumption wasn't too outrageous. It is an easy starter, liked to be a little wet crank it through about 6/7 times after priming it and then hook up the ignitors. It should go off in about 3 flips.
Oh an it is extremely well made so with proper care it will last an incredably long time. Oh an I guess that 22 inch props are about right for the thing either an 8/or 10 inch. If your using it on a cub probably a 24/6 could be used. Others will chime in with other info that you can use.

dennis