Lowry
Well-Known OPE Member
That black is the fuel line coming apart .That stuff will suck right through the filter and lodge in the screen believe it or not . I've already pressure washed the tank several times to get rid of the crud .If you don't get it out you will become a expert disassembling the carb .
Definitely wasn't from the fuel line. It was a combo of old fuel, 2stroke oil, and dirt.