Hey Geoff,,, there is a "bolt" on the side of the float bowl,, unscrew and remove it,, gas should flow out, freely.,,while the "bolt" is out.. pump the bulb and this will help flush out some crud..BUT - For a complete cleaning,.. you need a qualified professional... its #25 on the diagram
Parts for Mercury Marine 60 HP Bigfoot 3 Cylinder Carburetor
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