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yz 125 leaking gasoline

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seems to be a common issue with the older yz's, my 2000 did it too. You just need to adjust the float level, refer service manual and the YZ FAQ for info on how to adjust it.

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Chances are, if it just suddenly started leaking gas, theres dirt in the float needle. Or the rubber seal is messed up letting the fuel overfill the float bowl. If you turn the gas on and gas comes out the bowl overflow, then its the needle or seat. You can try taking the fuel line off and blow air through it. (you shouldn't be able to blow any air in it) Otherwise you'll have to tear it apart and clean or replace it. Then also check your float level while your in there.

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