OT - Outboard motors in a steel drum?
The outboard needs cooling water as well as a load on the prop
a prop in a barrel doesn't put a good load on the engine, though it does put
some load on it. There used to be -- and I assume still are -- special test
props to load up an engine in a tank.
But yeah, the engine has to have water to run. Running them out of water for
even a short time can ruin the rubber water pump impeller.
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