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06 1700 carb jetting

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  • 06 1700 carb jetting

    So I know this has been covered in depth but as I figured my carb wasnt jetted right. 37.5 idle and a 187.5 main says ftc usa on side, actual odle air adjustment still plugged off. Has kury intake(which hits my knee), and some unmarked 3" exhaust with baffles I am assuming is a roadburner exhaust. Why the f### does it have a 37.5 idle jet and a 187 in the main

  • #2
    Sorry I didnt actually post the question but a 40 for idle correct and since i dont think the main is mikuni any one know if it crosses over to what I need?

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    • #3
      Hard telling who makes that main jet and what Mikuni size it compares to. Also without knowing who makes the needle your carb has in it there is no way of knowing how to jet the carb for your mods. If the bike runs good and not rich (black spark plugs) leave it alone But if it is running poorly and running rich IMO the best thing to do would be to buy a barons jet kit to obtain the barons needle and mikuni main jet.

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      • #4
        Im putting it back together and am gonna order the barons. Other than the main its stock. Im tired of fighting idle issues. I replaced the coaster cover and am gonna drill out the idle adjustment screw cover

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        • #5
          That would probably be the best thing to do. With the Barons kit use a 172.5 main, 40 Mikuni pilot jet put the clip in the 4th groove on the needle with plastic spacer and 1 silver washer under the clip and then set the pms screw to 2 1/2 turns out.

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          • #6
            In the process needle has 4 grooves. Is that what the barons has? Does the factory have the same, as far as grooves?

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            • #7
              Sorry 6 grooves so Im guessing a barons. Looks like I just need to do the idle jet and pms adjustment. Not to bad carb was filthy inside.

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              • #8
                The factory only has 1 groove Barons has 5

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                • #9
                  Must have counted wrong. None the less its going on now. Thank you for all the help.

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                  • #10
                    So 40 pilot jet and adjusted pms and its like it should be. Thank you again. Next some different handle bars

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