as long as the carb is set right then the fuel consumption is pretty good, they are as reliable as it gets, mine never let me down, infact I think its proberly the most reliable motor I have owned, one piece double hoop cage means they are very strong, I still got a prop wich I had balanced and kept as a spare, sitting here in my office, you can have that if you buy the motor as its no good to me.
anything else you need to now just ask.