The pump is in an accessible location.
The factory had to build the boat, putting all those parts in-place, so the owner has to be able to access those parts, using the same steps followed by the factory.
Images of your boat doesn't show that pump to be in the engine compartment.
My guess is that a panel in a locker must be unscrewed to expose the pump.
My very strong suggestion is to unscrew every panel in every locker and take lots of images of everything that is concealed. At some point those images will be invaluable.
