New 15 Yamaha 2 stroke won't idle

[vineyard39]

Trying to break in my new 15hp 2 stroke Yamaha but it seems to be running too rich at idle and stalls after a few minutes of running, no problem at high speeds. After it stalls I have to disconnect gas line, cover air intake and keep pulling until excess gas is sucked out and then it cranks again but at slow idle speeds it smokes a lot and will not idle with out stalling as if it is flooding. Is there a low seed air/fuel mixture adjustment screw?? Seems the mixture may be too rich with fuel at idle. I looked on both sides of the carb and could not find an idle pilot screw with a spring on it like I would expect to find to adjust the fuel air mixture.

[boats.net]

Your dealer should be able to repair under warranty, sounds like a carb or fuel pump problem. If it's running that rich then adjustment wouldn't help but it has EPA plugs over adjustment and shouldn't be tampered with.