have a couple of questions. I have a 2007 Arctic cat 650 hi and the idle goes up and down and sometime times it idles that low it shut offs and you get a strong smell of gas.( yes i haved played with the idle adjustment screw and i have it set to the best place i have found so far) also if im on a long run the bike will just shut off.Yes i changed the air filter and the spark plug. I have a wet and dry clutch kit put in it and a jet kit good for 6500 or 6000 feet cant remember right now. the bike only has 700 km on it yet, heres a thought when i adjusted the mixtrue screw under the carb could i have gave to much of a turn? im downloading spellcheck next

 

Do you have a vacuume leak? A bad gasket or anything like that?