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About ChemHead

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    TT Newbie

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    Riding, Camping, Cooking
  1. Dburd, I asked that question myself...the best I can find is the correction charts for the XR400. They will apply to the 250 carb as well. Seems like the slow jet has a more steeper correction factor. Here are the links MAIN http://john.rushworth.com/pics/xr400/xr4faq/trailslo.htm SLOW http://john.rushworth.com/pics/xr400/xr4faq/main_cor.htm Bear in mind these are un moded charts. As always be careful to not over lean on the slow jet as engine damage could result.
  2. ChemHead

    98 XR200 Jetting

    The original setup on that bike is 110 Main and 38 on the pilot or slow jet. My sons was set down to 35 pilot and 102 main, needle moved to second clip...runs super duper here in Colorado from 6-10K ft. No mods done. I guess I would start by verifying your current jetting. With the trick exhaust, I am sure you will at least start from stock.
  3. ChemHead

    04' XR250R Jetting

    You can buy a service manual or....The main jet is accessible from the main drain bolt on the bottom of the carb (17mm). The pilot jet is gotten to by removing the three screws that hold the float bowl on. Look for it by gently raising the float...it will be in between the middle. Bothe operations can be done with the carb on the bike, if you got a stubby phillips and nimble fingers. Here is a link to parts references...
  4. ChemHead

    98 XR200 Jetting

    What altitude are you riding at?