i have a600 sportman and it is the most cold blooded atv, i have to leave the chock on for a long time befor it willrun with out it on!!!! i had 425 mag. befor and it didnt do this, i took the 600 in for check up, came back the same way! does any one have this trouble too, its and 04. sledman

I did have the same problem with mine. There was a recall I think on the Carburators. I bought mine new and had that problem from the begining, when I brought it back for the 500M tune up they Changed my Carb and I have never had a problem since.