As long as this is not a DI the fuel pump is really a diaphragm in the mag carb operated by a pulse line from the engine. Search Seadoo parts finder on google and you can find plenty of parts diagrams
You should probably be rebuilding both your carbs if you are asking that type of question. Make sure fuel lines are black - not that tempo gray stuff - if so DO NOT RUN the craft any longer on them.
Are you familiar with the Grey Tempo fuel line issue? Your ski came from the factory with them, but they may have been swapped out previous to you buying it.