Join Date: Sep 2006
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Re: Raw water circuit
The connection to the gearbox looks like the coolant feed to the gearbox.
From there, it will probably meet with the coolant pump, then to the motor coolant jacket.
Take some more pictures of what is next in the coolant circuit.
What is the motor? Is it raw water cooled or is there a heat exchanger somewhere?
I would not worry much about the red tab.
You have to feed coolant. That hose must be connected to the through-hull.