No special extraction tools are required, just a small jeweler screwdriver.

Push the screwdriver into the back of the connector, to push the Red terminal locking bar loose, then extract from the front.

 

After extracting the locking bar, insert the small screwdriver between the terminal locking tab, at the red arrow and turn, while gently pulling on the wire.

This will allow the terminal to be removed.

If this would be better as a .PDF, I can probably do that.

 

See if this .PDF is any better.