a friend of mine just got one of these engines.

but we have a question, there are 3 fuel lines on the carb and one in the crankcase.

i figured one was the carb pressure line and one is the feed line, but whats the third one for?? and how do we make sure which one is which??

also, is the crankcase line a pressure line or a crankcase vent line??

thanks
tony