If so it probably only has an idle mix adjust, or an idle speed screw, or neither.
There is a way to adjust the full governed speed, but that's best left alone unless there is good reason to go there, as in the engine has been apart or something happened to the original setting.
Common carb problem with those is lean surging from dried ethanol deposits in the main jet. The solution is to remove the jet, which I think is in the nut that holds the bowl on, but it can be up inside the stem above the bowl nut. It will need to be scraped out with a stiff wire, flushing with carb cleaner will not clean it! Be persistent, scrape and poke it as thoroughly as possible without actually enlarging it.
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Today's Featured Article - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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