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Bros 400 jetting

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    #1

    Bros 400 jetting

    Has any messed around with the jetting of the 400 model there is tons of info about the 650 jet sizes.
    I have a 3 carbs and was planing to mess around with the jets sizes to see what differences it makes.
    Any good starting point would be helpful
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    #2
    I found this some time ago but not sure its correct:-
    403 error
    http://www.wemoto.com/wem/brosjets.html
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      #3
      The Wemoto info looks about right. I wouldn't go with the jet and needle setting for the 650 though. On my 400 I'm running 145 and 142 with an M4 shorty exhaust with K&N filter. I've got the needles shimmed and the pilot screws adjusted about 2 3/4 turns out. You might need to make some different adjustments depending on whether you're running the stock air box or pods. Hope this helps.
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