As a retired inboard marine mechanic I though I would try to make an easier, cleaner and greener way of winterizing (flushing) inboard marine engines. I though that if I could run a hose from each drain port so I didn’t have to crawl around the engine room, l could figure out a way to drain each hose fast and easy. I made a manual hand pump that was reversible (pushes fluids one direction and with a simple twist of the wrist, pushes fluids in the other direction) and that connects to each hose through ...
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