I thought I would share my experience with everyone in case it might help someone else. My bike was running great, I have about 30 miles on it now, then all of the sudden one day it quit and I could not figure out why. I read about the poor quality spark plugs these things come with and decided that it would not hurt to upgrade the plug to the NGK B5HS so I went to town and after looking at several places I found one and when I tried it out in the bike, it did not fix the problem. Finally after reading some forums posts here, it dawned on me what had happened. I had bumped the choke lever with my foot while peddling and closed the choke! That's all it was, and I spent $2 on a new spark plug for nothing, almost 
myke
myke
