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2002 yz 85 seems to bog out once i get to 1/4 throttle

i have cleaned the carb nd filter nd change my gas mix nd changed the spark plug nd i still cant get it to run right

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A plugged air filter is usually the culprit in most of these cases, along with the problems you have already rectified. Check the gas tank for rust or other debris because it could be blocking the lines. Have a mechanic take a look at the bike for proper diagnosis and repair.

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It's the floats it is letting gas in your motor which is causing it to flood and you have a bog fix the floats or needle valve
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whats the needle valve and how do i fix it?
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Floats could be bad or topend my rm125 had same prob

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The air/fuel ratio is incorrect

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