I've tuned up my XT 600 with K&N filter, dyna-jet stage 2 and a Dep silencer. It requires no choke what-so-ever and idles perfectly from cold, and stays that way all the time. I thought it was running a bit rich, and turned down the mixture screw to a single turn out, so every so often when I'm decelerating with engine braking I hear a little pop (thats lean enough!). I just cant believe how easy it is to start  . My missus has the exact same model, and hers has to be choked all over the neighbourhood! I ride every day though, she rides once a month, that could be the reason:confused1:
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