Witch way do u turn air/fuel screw to lean the mixture I no the book says to adjust clip but it's on an 07 n as u now half the bike needs to be pulled apart to take carby out.....the plug is always black ,so was gunna try lean the mixture out first,the bike runs perfect but the plug is always black?

Check that the screw is super hard to get to without aftermarket screw fitted .....might leave it ,I'd sort it but not pulling half the bike apart

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