Barnone,

I've got a 40 pilot 105 main jet setup, but that's what the bike came with from the factory. I've adjusted the float height to 15mm, lowering the fuel level about 1mm more than the Walbro PDF has for their PZ26. I've also adjusted the valves to the factory recommended .006I/.008E. When I removed the valve cover this morning and brought the engine to TDC I found that there was almost no clearance at all!

I started it up and noticed that it fired up a bit quicker and turned over easier, but I've still got to mess with the carb. I cleaned the plug and carb prior to firing it up, and let the engine warm up after the float adjustment. Pulled the plug after all this, and still found it sooty black. The mixture screw is about 2 turns out from seated for all this, and adjusting it helps barely. The carb keeps "coughing" from a cold start, sending a noticeable puff of fuel out of the air filter each time it does.