I feel stupid asking this, but how do you plumb a 4 stroke engine? Im used to 2 stroke engines, and dont know where the third line goes on the 4 stroke engine. But anywho i hopefully will have my .91 installed and ill try to fly it by next week!

Colin C

ps. Is a 14x4 a good enough prop for this plane/engine? I used a 11x7 on my .46 when it was in the nose...