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Originally Posted by davidc83
Couldnt this be caused by over-rich mixture? Arent there screws on the carb to lean it out some?
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Possible. Thus: "Check the air filter"..... but kind of unlikely since the general nature is to be lean.
What you suggest is generally bad advice.
You need to find the cause of the problem, not tweak the adjustment.
Anyway, the only adjustment available externally is the idle mixture screw and it's probably not the mixture AT IDLE that is the problem.
Need other evidence to help find the cause. Condition of plugs, general running condition, test with a CO meter, etc.
