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RE: spark plugs
jeff said 2008-11-12 00:12
i have the same problem with my cr 125 its a common problem you must buy a full jetting kity from jdjetting specific for your bike. you will need to run change the jet from a 230 to a 210 and the special tapered needlestrhat come in the kit. raise up the float 1 knotch and lean out your gas to 50 to 1 or 60 to 1