I have a "household grade" electric pressure washer that I have used on mower decks to get the black gunk off of by physically pre -scraping off some of the excess build up in order for the washer to successfully remove all remaining traces with the water blast alone.
Would this be safe to use on a plastic Victa carb in situ on the engine with snorkel securely on?
I have a feeling the stop plug boot would be one likely entry point for the dreaded H2O to sneak in.
Another device I have is this compressed air gun with a screw on bottle that blasts a mix of air and whatever substance you choose, as a high pressure mist. Is thinking of loading kerosene as it won't harm the internals, being oil based and a natural cleaner.
Only thing is how to contain the splatter out the other side and prevent making a mess!


Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!