The way they want you to adjust it is strange but that’s exactly what the manual said to do.
The power head appears to be based on the old school, Mercury single cylinder power head that goes back to the 1960s 3.9 hp. When right, those actually didn’t run too bad for a one lunger. You may be surprised….
Funny thing about the two-cylinder “Gnat” type engines: They had an integral fuel tank, like yours. They would run out of gas with half a tank of fuel left, because the bottom of the gas tank was lower than the carb inlet. Can’t make this stuff up. If you bought one that had the optional fuel pump and remote tank connector, then that wouldn’t happen. I don’t know what the tank/carb level relationship is on yours; but be advised that it might be possible to run out of gas unless the tank is quite full…..
Long live American manufacturing!
