hey i have a 96 xcr 600 which has like teh same 597 engine as your sled! and ya mine is hard as heck to start to anoys me all i can think is mayber there is some watter in teh gas? if anyone else can help me out to i would really apprciat it also!!! liek today it took about 50 pulls to start my sled and im not kidding! and im not some little weak boy either! ive dorve 800;s that pull over easier i dont get it thanks though would love the help!