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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
BK Mod on 2003 YZ250F??
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[QUOTE="tmoney, post: 554481, member: 27864"] owenlo, I had the same problem and could not make the BK mod work for the 03. I checked the timing with a flashlight and as far as I could tell it was definately squirting gas for less than a second and it seemed to be the right timing. Two comments; 1) I wonder if the 01/02 FCR cover plate would fit on the 03? This would provide the space needed to tap... 2) I don't know if simply changing the leak jet to a larger size would have the same net effect? That seems easiest to try first. 3) I know what the manual says about the AP timing setup, but I was wondering if the best way would be to adjust the fuel timing so it hits the slide (5/ of 10 times) and then back down from there so it just clears the slide. Just ideas... [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
BK Mod on 2003 YZ250F??
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