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Dirt Bike Brands - Other
2002 CRF 450 Jetting
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[QUOTE="Matt90GT, post: 1324467, member: 30871"] Dont waste your time on their site. You need to modify the carb a bit. First off grind down the rivet on the accelerator pump to 2mm in length. Then run a 90 leak jet, wire the accelerator pump arm, run a 45 pilot and stock main. Be sure to get a longer fuel screw so that you can easily tune it. For altitude you may need a bigger or smaller main/pilot jet. I live at sea level. follow this link: [url]http://www.squadpage.com/pandora/Professor%20RedBeard450%20How-To%20AP%20Mod.pdf[/url] That is the original of the document, but later discussion they run the 90 leak jet. I have that setup in my bike (dont use any pump covers or aftermarket needles) and it runs like fuel injection. Never hesitates or bogs. Just runs hard [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
2002 CRF 450 Jetting
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