Firstly, welcome. I hope you continue to enjoy your 440. There is certainly a lot to come to tems with at first.
In any case, from the photo
, it looks like you have the factory arrangement. Hopefully you have the owner's manual? In any case, there should be two bilge pumps in each bilge. I think you'll find a submersible pump with a float switch down in the depths of the bilge. You can see its drain pipe running east west in the bilge in your photo. This is usually not manually switchable, but nevertheless should be operational in demand mode if the water level is high enough to trigger the float switch. You can lift
it up by grabbing the pipe, and check that there is no major debris in the housing/filter.
The big black pump at top left is manual and switchable from the flybridge assuming the circuit breakers are set to on. You should check firstly that the breakers are on, and then look to the left of the steering wheel
on the bridge deck
for two rocker switches that manually operate the pumps. I just leave my switches in the on position and operate the manual pumps from the electrical
board, so that I can hear them operate and I also listen for the sound of then sucking air so I know the job is done without having to lift the flooring
As for the engine running hot, there a several issues to consider. Hopefully, it is only the sea water intakes being blocked as you have observed. Clear the intakes, check the sea water strainers on the forward bulkhead in the engine compartment (left), check your fresh water/coolant levels, and hope that's all. Otherwise you might need to check the impeller for wear, before the heat exchangers.
Also note that on some installations, the water detection sensor fitted to the leg (it monitors for water between the inner and outer leg seals) triggers the same temperature light and alarm
. If its not the simple things, maybe get in an "expert" given that you are new to the boat and overheating
is a pretty important issue.