I can get the top end tuned in nicely, and then the idle tuned nicely as well. The thing will run both wide open and idle, for as long as the fuel remains in the tank. However, the mid-range is extremely rich. I tried running both the high and low ends on the lean side to compensate, but it wasn't near enough. I found that one of my K & B 40 carbs was close to the same size and installed it. Only got one run in (being neighbor friendly at 8:45pm) and the carb loosened some. During the short run, it was much, much better. I now have the carb mounted better and tight and will run it tomorrow.
Background, I bought this engine back in 2002 brand new and was told that it was the 'newest' MDS 48 with the 'improved' carburetor. Does anyone know of a third 'generation' carb for the 48? Is there any easy mod to lean the mid-range.
Thanks