Hi David, if the starting methods described above do not work, try this one. When cold, choke on, three or four kicks no throttle. Turn the choke off and give it a good strong kick. this method has worked very well on my 02 470. All bikes are a little different, but mine is VERY sensitive to the idle mixture and idle speed, once you get the bike running, check these settings. If these don't work, repost, and we'll get you through it!