I have a 2007 rhino 660 with 3500 miles on it. The last few months it will die when going slow or idling for a few minutes. To get it started you have to pull the choke and then give it a little gas and push the choke in slowly and tack off. last week i couldn't get it started at all change the cdi box back to the factory one and nothing, changed the fuel pump back to the factory one, nothing changed the fuel filter and spark plug and still wouldn't start pulled it back home about one hour later when we got home turned the key and it started right up, talked to a few mechanics here (Arizona) and the have know idea. it runs great when you stay 15 mph or faster.