SOHC.co.uk Forums > CB500/550

carb pilot screw

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alan:
On my 1972 Honda CB500 K1 I've noticed my spark plugs seem a little sooty and the electrod insulation is not quite the light tan/grey colour that it should be, I screwed the pilot screw out to the workshop manual setting and it does seem a little heavy on fuel, any ideas of the best solution to weakening the mixture?

Johnwebley:
Are all the plugs the same?

Try new air cleaners,



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