How do you flush your Mercury big blocks?
04-11-2011, 12:48 PM
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How do you flush your Mercury big blocks?
Mine are partially closed cooling but the manifolds and risers still have salt water cooling. I'm new to I/O's. My yamaha outboard was simple, I just hooked up a hose and turned on for 4 or 5 min. What do I do with these and the boat is always in the water in a slip.
