starts fine but idles very fast. can take screw all the way out and still idles fast. can put hand over breather box hole to cut off most of the air and it idles good.i would think air leak but everything looks good. ?????????????????????????????????????????????????////

 

does it have an air filter that is charged properly?

 

do you have an air bleed adjustment screw? turn it in to richen and out to lean the mixture (thats not a typo) at low speeds and idle.