M.A.C Cruiser wrote:
do not run your engine while connected to the flush port!!
The flush port is basically a "reverse flush" if you run the engine with it hooked up, your inlets will be sucking air and trying to push it out the flush port. with a hose hooked there trying to push water the opposite direction.... well you can imagine the type of damage that can be done.
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No, in the case of the later one, it isn't ! The flush inlet is in the inlet hose of the raw water pump. The water from the garden hose goes exactly the same way into the raw water pump/ engine as it would if raw water was getting sucked in through the inlets on the outdrive lower unit. The only water which goes the reverse way back to the outdrive is excess water that the raw water pump will not let through.