Yes, I will try bypassing the fuel pump and run the fuel hose straight to the carb. The gas tank is actually just slightly higher than the carb on these machines so maybe it will feed itself okay. Question-- I thought that the whole idea of the plastic fuel pump as oppossed to the original metal body pump was to avoid a vapor lock condition-- is that not so? The fuel hose is ¼ inch rubber on mine, no steel anywhere. The hose is routed the same way since original in 1975 and isn't up against anything particularly hot.
About checking the float setting in the carb, would that make a difference only when hot? Need to find the spec on that too, its a fully adjustable (high & low speed) Walbro.
Way too hot to mess with it today. I'll report back in a few. Thanks!