Question about 2003 Yamaha YZ 125
Posted by Anonymous on
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Posted on Jul 28, 2016
melting spark plug is too lean. exhaust gas high temps caused by too much air. your oil to fuel ratio is correct, but your air to fuel ratio is not. adjust your needle clip position to add more fuel to the carb by lowering the C clip. this will raise the needle, giving you more fuel for the same amount of air. also check air filter element for tears.
Posted on Nov 22, 2010
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