BillS, I yahood Walbro and found an article in a model boat publication that details the rebuild and setup of the carb. It will be a usefull guide to get me started.
When I removed the muffler I found that it had failed where it was dimpled so the exahust was leaking out. I dont' know if that would effect the engine or not but I will need a new muffler before I start her again. The exahust port on this engine is round rather than rectanglular and most of the aftermarket mufflers for the Ryobi are of the rectangular style. It seems to me that there is a lot of variation in these engines. This one is about two years old and looks very different in several places from what I have seen and what has been discribed by others. Do you know if the 14mm bore carb is a standard or did I get an oddball carb as well? I dont' have it in my hand so I cant' give you any numbers, but it is a walbro, mexican made, and it looks like the ones shown on the converion sites I have visited.