Haha, I don't know know how much fuel it actually consumes, but I know it isn't a whole heck of a lot. That engine is throttle governed, so it is firing most of the time. When the throttle plate is completely closed, it is kind of like a "miss" cycle. My guess is, it is better on gas than a modern briggs.

And it has the cool factor. 8-)
I know my 6 horse Famous doesn't use squat. That stupid thing will run for 2 hrs with nothing in the tank. I haven't been able to figure that one out and I don't really care.

In the future, I want to convert my whole engine collection to early IHC stuff. I'm thinking a nice little 1 horse Famous would be perfect for this rig.
http://www.youtube.com/watch?v=u8ZzMwD0XpQ