1979 V4 Evinrude Outboard Service Repair Manual for V4 Engines P/N 506764, Page 33Get this manual

1979 V4 Evinrude Outboard Service Repair Manual for V4 Engines P/N 506764, Page 33

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1 Induced low pressure 2 Venturi 3 Throat 4 Atmospheric air pressure 536'7
The carburetor is metering device for mixing fuel and airAt idle speed, engine requires mixture of about parts air tofu