I had this happen to me once and what i did to get it started was i took out the spark plugs and poured a little gas into the plug holes . Then put the plugs back in and start it . Now if your sled is cold blooded it might take more than one time . You can also remove the air box and use starting fluid or carb cleaner spray to get it going .
Good luck .
At least you have some snow here in colorado we are just now getting enough to ride on up in the mountains .