ORIGINAL: Macanan
2.5 out is lean I have the VX.18 motor and mine is set at 3 1/4 out you need to richen it up.
thats funny. the manul says 2.5 to break it in and then lean it out. i have read many things that say 2.5-3 for brake in. theres lots of smoke and little bit of oil comeing out the exsaust