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2004 Yz450f carb on a 1998 yz400f?

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Has anybody heard of anyone doing this? I have a 98 400 that's been sitting for about 7 years and after 3 carb cleanings I got it running, but very ruff. Are the newer carbs a better design, or should I just buy a full rebuild kit for mine? Seems like I heard of someone doing this before :/ImageUploadedByThumper Talk1387880487.278843.jpgImageUploadedByThumper Talk1387880647.474103.jpg

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