I have a 2004 Polaris Sportsman 400. The Bike starts fine with the choke. When you turn the choke off the bike idles. As soon as you move the throttle the bike dies. It almost sounds like the ignition cuts out. I check the throttle kill switch under at the throttle it is working properly. I cleaned the Carb and adjusted the throttle slack 2 months ago when I experienced similar symptoms and it has been working great till yesterday. The air filter is clean. Any wise words out there. Oh, then the choke is on it will rev just fine.