Hello, I purchased a boat with a 1973 Evinrude Fisherman 6 hp motor, model 6302 and wanted to start it up in the dive using muffs. I checked a manual and noticed the area I usually put the muffs is called the water bypass plate. There is an area located within the exhaust housing called the intake, intake screen, and intake plug. Is this where the motor gets the water for cooling from or is it the usual place on the side of the gearcase above the catavation plate? I know I can run it for short periods without overheating but did not want to rebuild/replace the impeller and water pump internals if I do not have to. Thanks for the help....