Thank you for just getting down to it and not waffling on, cheers.

Many thanks for this video. The key moment for me (and I suspect many others) is at 2:22 when you show the key to opening the Karcher case - removal of those two weird 'wall plugs' (who would have thought it - a very odd aspect of the enclosure design) which then allows the case to come apart. Without that moment in your video I would have given up! The problem I had was that I bought the Karcher pre-filled soap dispenser and was totally frustrated by it. First up it wasn't obvious that the lid on the bottle, which looks as if it plugs onto a nozzle, has to be removed - I thought it was just too big and the wrong one! Felt a total idiot when I discovered that it is removable and reveals the real socket that sits into the bottle receptor underneath. Quite why they make it like that is a puzzle - I mean wouldn't an ordinary screw on lid have done the same job? No! Make one with a decoy fitting to confuse the end user - much more exciting! :/ ...Then, once I got the soap bottle fitted properly into the machine, I tried using the 'mix' setting on the lance and there was a distinct lack of soap being squirted onto my car. Very odd! Then I saw where the soap was going - a blue flow of soapy liquid was issuing from the underside of the machine!! At this point I gave up and wished I hadn't wasted my money on a decoy bottle of Karcher branded soap that ended up washing my driveway - aaaarrrggggghhhhhh!! Finally, this evening, whilst getting bored I thought I would have a go at fixing the problem and set about trying to open up my K4. I started by removing all Torx screws + the two crosshead screws on the underside (I thought it was odd that they changed fixing just for these two) but could not ge the case to open, and again, was close to giving up until my wife suggested I have a dig around on KZfaq, which I did using the search: 'Karcher K4 dismantle' ...which is when I found your video, which thankfully showed the vital bit of missing information at 2:22. Brilliant! Case removed carefully avoiding damage to the power switch stem (really vulnerable). Just before I found your video I had established the reason for the leaking soap by peering through the gap in the partially opened case - I could see a clear plastic tube not connected to anything! I found the problem, which is now fixed thanks to your excellent video. Remaining puzzle is this: why wasn't the tube connected to the bottom of the soap bottle housing? Was it left off for fun?! No evidence that anyone else had ever opened the K4 except for me this evening. All tested, soap being dispensed just as it should be; best of all it can be re-filled with soap, which is why I thought I should invest in the proper Karcher product in the first place. Pity they do not include any instructions or troubleshooting tips - totally alone on that one; not even a phone call to Karcher helped. They had no idea and could not suggest a course of action. Anyway, there you have it. Again, many thanks for your video :)

Just got mine n bits now very useful to borrow down as when they split you can’t for the life of you see where from so thanks

Hey thanks for this, very helpful!

Thanks bud very helpful!

Great vid mate thanks

Thank you so much. You have saved me from buying a new machine. Keep up the great work👍

Nice one James, thank you 👍

Very helpfull thanks

Very good video

since posting this video ive had a karcher k4 full control with a split water inlet pipe but i think they are only available in plastic and they are around £16 from ebay

Thanks James. Just what I wanted to know.

Hi watched your video with great interest but I really could have done with watching you replace the cylinder head which is where my K4FC is leaking

Hi, nice video thanks. I have Karcher k4, water started leaking from the back water inlet., where did you buy £16 worth of parts (metal elbow, & cable hook)? Thanks.

If you bought this part on internet please share link

Hi James, Thanks for the video. I am trying to get the metal internal high pressure pipe for a K4 but can only find ones for the K5. Could you tell me, are they the same and where did you get yours from? Regards, Stephan

We’re can you buy the metal part you mentioned, fits at the back

Much ta. :)

Hi James Thanks for the video My k4 had the same problem , I got the elbow replaced , got the connecting pipe replaced , but the leak is still there , is there any thing I might be doing wrong . Went online to get some paid advice , got scammed. I have almost given up

Hi mate just watched ur video an noticed u mentions starter shaft could break, mine did what u said fall over could u plz tell me where I could buy replacent shaft as heard u say that they cost twenty pound would really appreciate ur help thanks

Can you please tell me where you got your starter shaft to switch on and off, I’ve tried everywhere with no luck they will only sell the complete unit for £60

if onlyk we'd watched this before we bought a new one. CAn you put up a video about how to overwinter them?

Hi, great video, could you do one showing how to get the elbow off where the wand pipe connects to, Thanks

You didn’t show how to remove the pipe that goes out of the back !!!

You need to identify the parts as i too know where the water is coming from but don't know the name of the part .

who makes a one that last .. this brand is rubbish

Cheap not worth a monkeys you will not get your moneys worth out of it I treated it like a baby the second time haha