How to disassemble 911 headlamp washer (tower type)?

Hi, can somebody point me to a tutorial explaining how to take down the headlamp washers (tower type, see picture)?
Thanks in advance.
Massimo

Attachment 303942

The headlight washer nozzles fit through a hole in the bumper and are held in place by a clip on the other side of the bumper (the clip slides into a groove on the nozzle). If you remove the "smile" trim piece on top of the bumper (fasteners at trunk front bulkhead and fenders), there may be enough room to reach your hand in and slide out the clips. Otherwise you will need to unbolt the bumper, which is probably faster than messing with the smile anyway.

Thanks Frank!