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tech support
dennis emanuel said 2010-05-18 03:53
Working on a friends bike 1977 cb 750/4 bike won´t idle runs with choke on high rpm only, seems like no gas at idle checked valves ok. got into carbs seems it was missing what i think is the accelerator pump o ring ? and the fuel bowl gaskets were shot . And the idle mixture screws had bad o rings.Could that be enough to make it not idle?