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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
yz125 KIEHIN jetting
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[QUOTE="confusedtech, post: 1149907, member: 71235"] I took the mikuni off my sons 2002 yz125 and put on a 59mm Kiehin. The main jet in it was a 170. The bike runs good low and mid but sputters on top end. I have gone up on the main to a 205(5 at a time) and it hasn't fixed it yet. Should I go down? Is it a rich sputter? It doesnt foul the plugs. I had Eric do a 144 bore for me but it just doesnt seem to have the top I think it should. Just wondering if anyone else runs a Kiehin on a 125. thanks confusedtech [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
yz125 KIEHIN jetting
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