How do you fix windshield wipers on a Honda Civic?

I'm not sure what your pointing to, but heres my best.

The nut holding the wiper arm assembly to the motors is a 13mm socket. Undo both sides. To get the arms off the motor mounts, push down on the middle of the arm, about where the sring is. Pres firmly and them wiggle the arm until it comes loose. It is not hard at all.

Tehre you go, you now have two wiper arms detached and can do what ever repairs you need.

If you need to know how to change the blades or the blade holder, go to a local car place and ask, they will show you, as it is mostly common sense.