Yes, I worked on carbs on cars and trucks most of my life. I wasn't the best at it and had to ask for help many times from the "gurus" that I knew of because, if you don't do it every day, it will never become "second nature" so to speak.
But I was succesful for the most part and thought I knew my stuff when I first ran into these little Keihin brand "jewels". I was immediately served a nice helping of "humble pie" to chew on as I worked on my first and then second versions of these. Learning by trial and mostly error.
It's not that they are terribly complicated or that special tools are needed. It's because they were designed to provide performance along with fuel savings as well as limit exhaust emissions as much as possible. A lot to ask for a little one barrel outboard carb.
They do their job quite well in my opinion (although I have no knowledge about the outboard's emissions numbers)
Once again, I found myself asking questions about them from a guru. My hero, hondadude (he no longer posts here) was that guru and he suggested getting the Honda Marine Carburetion Manual that he used to help understand them better.....available here:
https://publications.powerequipment.honda.com/marine
It's a great resource and excellent primer for anyone interested in repairing these little carburetors.
Also, I now know a little something about that "I'm old and it's hard to sleep" thing. Please let me know if moving to Tennesee..or....anywhere actually...turns out to be a remedy for those afflictions;>)
Good luck.
