I think you should take the time to get a manual or that describes how to bleed the low pressure side and the high pressure side of the fuel system. If you introduce air into the low pressure side (for example by changing the filters) and you don't bleed the air out, there is a very good chance you will force air into the high pressure side of the system. Once you do that you will have to bleed the air out of that system as well. These are basic diesel skills and they are not hard to master. Practice in your slip. You will be glad you did someday when you have to bleed the system at sea. If you are unsure hire a mechanic to change the filters and show you how to bleed the system. It can be an enjoyable process to get to know your engine better.
The low pressure system is everything up to the inlet on the high pressure fuel pump. That is your final bleed point for the low pressure system. The high pressure system is the high pressure pump, the high pressure lines, and the injectors.
In very simple terms you will need to open the vent on top of the filter bracket, hold a cup or a rag to catch the excess fuel, then have someone turn to key to "on" (but don't crank the engine over) which should energize the electric fuel pump. They may have to cycle the key more than once. Turn the key off when you get clear fuel. Then close the vent screw. That's usually about it for a filter change. In some cases you need to bleed the air all the way at the last point mentioned above, the high pressure pump inlet.
Bleeding the high pressure system goes like this....
Bleed the low pressure system first. Then open the connection at each injector 1 full turn (open all of them). Turn the key on and crank the engine over until fuel spits from the loosened connectors. The engine cannot start like this so don't worry. Then firmly (these things run at 2,000 - 3,000 psi) re-tighten each connection. Then start it up!
