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Dirt Bike Brands - Other
Understanding jetting on 99 YZ400
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[QUOTE="BillyWho, post: 119563, member: 22397"] Rich, I'm new to the "dark side" and I don't get how my bike runs great at about 500 MSL, and then I went to Mammoth which is about 7,000 MSL and it ran and felt (power wise) EXACTLY the same. I added about 15% oxygenated fuel to pump gas at Mammoth, but I can't imagine that stuff works THAT well. I want to get it jetted right for down here, and no I haven't checked the plug (I'll do that this Thursday) which I've heard is the ONLY way since there isn't the typical "quick" check on 2 strokes at the tip of the silencer for coloration.The only thing it does differently down here is it seems to detanate and stall (very seldom) at idle after a hard moto (for me) on a hot day. I'm assuming it is a hair lean, and any suggestions would be appriciated on whether to change the needle or air screw or both. If these things are really this untempermental, I think I'm in love!!:confused: Thanks Billy [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Understanding jetting on 99 YZ400
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