Re: 2004 Honda 9.9 4-Stroke Carb ??
Consider doing it yourself, I did my 8HP Honda and it was not that hard. It is a little awkward to get at the two screws that hold the carb to the engine, other than that you just unscrew the parts, remove the jets and soak it in "real" carb cleaner (not the rubber or plastic). Do not be tempted to drill out the plug if you have one, as I assume all the newer ones do. I'd buy the proper service manual first, from Honda.
You will probably need a tach if you want to adjust the idle speed properly, or I suppose if it runs OK now, make sure the adjustments go back to the same position by counting turns before you unscrew.