[Plankton]

My pressure washer is purging if thats the correct term. Anyway yesterday I noticed it's the large QR coupling on the gun that's leaking (the QR connecting to the lance)
What could be the cause of the problem, a dodgy washer?

[Mike Halliday]

The Female QC? The O rings might have split, they are an easy change just flick them out with a small screwdriver,  is the male all knurled and pitted from the little steel bearing  in the female? Might be worth changing it.

https://www.google.co.uk/search?q=quick+release+o+ring&safe=strict&client=safari&hl=en-gb&prmd=sivn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjFhKmkmt7XAhVFKMAKHWq-CYkQ_AUIEygC&biw=1024&bih=643&dpr=2#imgrc=tFtqGe2QRaZ3dM:

[Plankton]

It's  further in to the gun, I'll maybe post a couple of pics tomorrow.

[BDCS]

You can put a kit in the trigger if it's something like a sutner but I just change the trigger - I have a heap of old ones ! Get a 2300 they last ages