-
More complex than that.
The leak is from the blue shaded bit.
You can see the O-rings #3 and #5.
But going back to your diagram, the nozzle part isn't obviously dismantled.
Part #4 is made of a solid white plastic, and it is not shaped such that it can be unscrewed. It is in place by force.
If I use pliers it will tear the plastic, and yet I can't get it out to fit/reseat the O-rings.
2 Attachments
Where's the leak / which o-ring do you need to replace? Might be easy enough to hive mind how to replace it, and save a few hundred.