I have a Del UA-19S that runs too rich black smoke and doesn't respond much to adjustments, the metering rod is a C1 and main jet is marked 06 see picture below, this carburetor came from Italy so I don't know what the application was. I am using this on a Tecumseh HS-50 similar application as a Rupp Black Widow, I have the metering rod set all the way forward I believe that is a lean setting, anyone know what the main jet size should be or have any idea what adjustments are available to fix it.
Thanks
Tony
Thanks
Tony
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