Originally Posted by chucklesR
Does that manual specifically say how to stop a run away condition?
It does not (and don't think that I'm questioning your judgement), but I would probably use the "rag in the intake" trick if it came down to it. The decompression lever on my engine is one of the "automatic" variety so that it can be set and then the engine cranked over by hand while the lever clocks around a set number of times before re-engaging compression for the engine to start. Could be that that type of compression lever is a no-no to ever use to stop the engine, but other types are okay?