I had a good time playing with this little engine. I also bought the horizontal one at the same time. I am using 95 octane gasoline for fuel and made some YouTube videos using and reviewing these engines. https://www.youtube.com/playlist?list=PLfhGylRyTvD4Yc-xfoSi2m5_sE5qM0uNh
Arrived quickly great packaging very well made very nice and a great addition to my collection.