HI, How do I identify a Power Torque Engine?. The Carby is metal not plastic and it does not have any O rings in the mounting to the barrel, it has a plastic sleeve that is in the carby that slides over the inlet port on the barrel. The fuel system is clean as is the filter in the tank. The fuel flow is ok, it runs out of the hose freely. I assume it is a full crank as it has the magneto and starter on the top and a shaft with the cutting disk on the bottom.
I agree that it is running lean, and from your comments I need to be looking at crankcase seals. Not having worked on these before can the seals be replaced without spliting the crankcase? just removing the items external to the seals? I have no documentation othe than a pretty poor exlpoded diagram of a 160.
Thanks Don..