After removing, cleaning, replacing, removing again, rebuilding, and replacing this carburetor as often as I have, I don't know whether to hate it or cherish the knowledge I've gained through so long and intimate a relationship. It is a Holley, which usually came with the R-110 series, but I doubt this is the original.
It had a LOT of carbon build up, as you can see. It has since been rebuilt and cleaned. Not pretty, but it does it's job...well, kinda. My wife (and partner on this project) was looking into the engine as I was revving the engine one afternoon and reported that flames were shooting out of the carburetor. Some online research indicated that could be a timing issue or a lean mixture. I'll test for both.
Eventually, we'll replace the whole unit with a brand new Holley.
It stated that we can use toothpaste to substitute the fungus-cleaner.
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