I always replace the anti-tamper fuel pilot screw with a service screw. Then you can address the root cause; a lean condition. The Honda Eu series generators use an emulsion jet well design. The fuel and air are mixed before they get to the actual jet. This makes the adjustment very insensitive. All of the Honda generators that I've worked on needed to have the fuel pilot richened up. Honda is required to set them up very lean to pass all of the regulations in the markets they sell. The performance after setting the pilot richer is notable.
I wouldn’t recommend Sea Foam in the Honda fuel systems. There are many different types of materials used in the fuel system. It is a******shoot guessing if Seafoam will react with them at variable temperatures. The only thing that Sea Foam does if change the mixture by adding some chemicals to the fuel. The generator might respond to them and run smoother.
MM49
