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Fuel Mixture Control in Relation to Throttle Position Diagram

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philward:
Update on Nigels suggestion, fitted 120 mains, fitted .45 slow running (one size up) and moved needle 1 notch down (richer) - I know opposite to Nigel's suggestion - but only just got round to a test ride today. Popping on over run gone and revs out fine at higher revs. 'Chuffing/popping' on tickover still there with very slight and only slight variance in tickover (probably 50 - 75 rpm).
So nearly there! Probably the Boyer 'lost spark' in conjuction with race exhausts. Will try 2 degree timing retard.
Thanks for all the help

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