2012 Merc 115 4 stroke fuel filters.. how to remove them?

[snowman48047]

I am doing the first spring tune up and have done everything but fuel filter(s). There is one inline just inside the cowling and another inline leading to the injectors. I only bought 1 filter but am assuming I should change both? How does the line disconnect from the filter? Its a little black fitting with a red stripe on it. Can't figure it out...don't want to break anything.

Thanks!