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Jetting for '09 300 exc-e

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I live in Oz and ride the 300 exc-e 2009 model. I live in North Western Victoria with the following geographic location: temp. : 75 - 85 F, elevation 800-1000 ft.

Some local highly regarded dealer suggested i change my current jetting (JD RED needle PJ 38, MJ 162) back to stock, i.e. (until I find my feet and get used to the bike):

MJ 165

PJ 35

Needle N2ZJ 4th clip

AS 1 turn

I would love to hear your thoughts on this one and whether I should change my current settings back to these stock settings?

How is this stock jetting for milegae?

And, what PV spring should I use (colour and # turns out from flush)?

Also, is it better to run richer rather than leaner when learning about the bike's handling, etc?


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