Thanks Mark, please note that your engine, a GXV140, has the black plastic removable idle jet like the one in the Dutch video, not the non-removable metal idle jet like the one in the GCV160 and the galoot video. The plastic idle jet is located right under the idle speed adjustment screw - in fact the idle speed screw holds the jet in. Be gentle with that plastic jet - a new one from Honda costs $18, and the unbranded ones may not be sufficiently petrol-resistant. The idle jet hole is only 0.30 mm diameter (actually a 0.35 mm jet drill will just go through a brand new one, dead size fit), so there aren't many things in your toolbox that will fit through it without damaging the soft plastic.
Just cleaning the main jet and emulsifier would probably fix everything except idle quality. Note that it may not be easy to clean them though. My HRU195 initially ran slightly lean, though not lean enough to hunt, let alone run badly. The problem was a thin coating of gum in the main jet. Working torch tip cleaners through it had only a marginal effect on the diameter. However a short blast of carburetor cleaner, and then running the series of welding torch tip cleaners through it, enlarged it from less than 0.45 mm to a perfect fit for the 0.55 mm jet drill. That increased its fuel throughput by more than a third, and eliminated the problem. I suggest you do not rely on putting probes through the jets and passages, use carburetor cleaner as well (and be sure you remove it afterwards - it is no friend to plastics).
