thank you so much for your time spent making, editing and uploading this tutorial that it's perfect!

This is the best, well scripted video I've seen on this. Very well done. Thank you. I think for me, however, that I will purchase a new pressure washer. Mine is like 8 years old, if not older. I don't want to throw $100 towards an old pressure washer when a new one is $200. At this point, if one thing is broke it won't be long till something else is broke. I end up spending a dollar to save a nickel. Plastic and rubber parts don't last forever. After seeing how this is made I'm surprised that it's lasted this long......

This is by far the best tutorial on this pump that I've been able to come across. Thanks for your hard work documenting your experience working on that pump.

GREAT clear video/tutorial with perfect camera angles. Thank you!

Very useful video. I have a new K3 arriving tomorrow. If I'd known there was so much plastic in high pressure areas I might well have decided on another make. Now I feel ready to tackle any pressure issues if and when they arise. Thanks from a Welsh man living in the Republic of Ireland.

Excellent tutorial. You would not believe how many Web sites and videos I have looked at trying to find how much oil to put in. Yours is the only one I've seen that covers everything from start to finish. Well done.

Nice relaxing , very clearcut demonstration.

THE BEST VIDEO by far what l have seen on yt . Thank you!

Very detailed, great video, thanks for taking time to prepare and upload it. It was very helpful.

Even made 4 years ago, this tutorial was the best that I'd found on the net. Full of details and recommendations. Thank you so much for your dedication and patience. Only for reference, I'm from Brazil and live in the biggest city in Latin America.

One of the most informative, clearly understood videos I have viewed online. Spoke slowly and clearly.

Great video…. Just repaired my K4 by replacing the high pressure housing by following your diagnosis and detailed instructions. It was destined for the skip, but it’s back to full pressure again 👍

You are nothing short of a superstar in my opinion. I saved £250 by buying spare parts costing me £40 & followed your advice on this brill video & now I have a healthy none pulsating karcher 3.80md machine just like it was 8 years ago when I purchased it.😊 thank you.

Many thanx for your super video on Karcher diagnosis & repair !!!

with this video, everybody can fix it! very clear. Even the amount of oil to use. Thanks

Thank you very much. This fixed my K3. It had been in storage for approx 3 years and was surging. The fix was to strip down, clean and fill with 15w-40. It now works perfectly.

Thank you for your video. It was extremly instructive and thanks to you I brought my Karcher back from the dead. By doing such an awesome tutorial you keep the original spirit of internet alive: sharing freely informations and knowledge worldwide. I would have never been able to fix my machine without you. Greetings from France.

A damn fine video. Excellent.

I've now watched a couple of tutorials on repairing old karchers like mine (this is the best by the way), and they are extremely useful in providing sufficient evidence that tinkering with old karchers is an enormous pain in the arse (especially those 4 bolts!).

Very clear video, methodical work and done thoroughly, not skating over the surface just to get it going. With this and other machines which have numerous safety and functional cut-outs, it's quite a good idea to mention these towards the end of the reassembly process so that one can bench test the machine before the reassembly is complete (before the body panels and trims are put on) by overriding the cut-outs. This may have to be done quickly as the machine will be running dry and/or with limited cooling. What has happened to me a few times is that I have reassembled the complete machine only to realise that there is another issue. This needs a whole new dismantling process! There are lots of models of Karcher pressure washers and dozens of different body combinations. Dismantling the body parts needs to be done using intuition and careful examination but note that there are a lot of little plastic spring tabs on some of the bigger machines (eg 10 spring tabs on just one fascia panel on one of the K5s) and these have to be prised apart carefully under warm conditions or they will break off (cold conditions cause the plastic to be brittle).

i like the way you explin things good job keep up the good work and thank you ^^

A really good video! Thanks!👍😎

My Karcher is a K5 Preimum ecologic 1,181-261.0 It does not leak externally and reuns the mains water through it when the power is off. It will only work on the low pessure soap setting on the wand. I have stripped it down and replenished the oil but it still refuses to run at high pressure. It has a valve that is operated by the control knob with an Off/ On /Eco function. This only gets depressed for he Eco function and then not depressed to its full travel. It has mainly metal parts not plastic and has been drained down and kept in the garage during the cold weather. It is behaving as if the high pressure side is restricted so I am going to strip it down again and check for any muck or obstructions on that side. It also has a soap dispensor knob that regulates the soap that is dispensed. Great Video and very informative.

Very good demonstration and well explained every step of the way. Thank you for a quality repair video.

You are a natural teacher. Ragret Highschool

thanks for sharing, excellent explanation greetings from Tijuana BC Mexico

Thank you, thank you soo much. u save my life. I dismounted the high pressure head and the springs I put them upside down. so could no water pressure. Thanks to your video I was able to see where I went wrong.

Great video, got me up and running. I just replaced every O ring I could find, which did the trick without buying new parts. Thanks for your expert assistance in getting it all apart and back together again!

Very detailed and informative, many thanks.

Perfect explanation.. thank you.

Thanks for this, I have a much older washer but now I understand how they work it should be easy to figure out what the issue is.

excellent teaching. Thanks Guru. I wish there are many more videos from you on various garden power tools,

Your welcome i got into the history of fire engines once thay were built for them at one time

Thank you. May God reward you

Excellent video. I am quite confident that I can repair my machine. Parts will be much less than a new machine.

Thank you for this great explanation and lesson!

Thanks for the detailed and easy to get TUT, It'll really help me a lot, hope that i'll be able to repair the pressure washer i borrowed. Anyway, im from Philippines, thanks again and morr power

This is an amazingly helpful video... I am just stuck on whether to spend the money to fix it myself, by a new one, or take it to a Karcher repair shop and have them do it. I don't have all the parts, oils and lubes. But after watching your video, I feel like if I attempted it, I could do it.

Thanks buddy! great video

One of the best tutorial videos i have found, the spares are plentiful for the Karchers its a pity that they are so expensive even though most parts are made of plastic, i have a power craft washer made by Karcher its 18 years old, not used a lot, had to replace head, seals and micro switch, not bad really.

Muy buen video y aunque no esta en español pues le entendí todo lo que explico muchas gracias y que Dios lo siga Bendiciendo y que siga subiendo más videos de cómo arreglar las karcher y muchas gracias

Really clear instructions., Karcher first recommended 15/40 oil but then said I needed a viscous oil. My motor lies horizontally so I was concerned that oil might leak, but I see yours is upside down so I am going with the 15/40 oil

Proper shots, thanks!

Superb tutorial well explained and easy to follow

Great video You helped me a lot I fixed my Karcher Thank you 👍👍👍

Great video very clearly explained thanks

exelente video,gracias por compartir.

Very good tutorial. Very good camera work.

thanks for detailed video

What an excellent video thank you

Good job brother!

Superbly described 100%

thank you from Indonesia

Great job. Thanks

Thanks for the video. It confirms the operation of the pump - I'd surmised how it worked after partial disassembly of my Karcher K2.080 today. It stopped giving high pressure water yesterday and had black oil dribbling out of the bottom of the casing. BTW, another source of pulsing on and off is a split O-ring on the quick connect mains water hose fitting (if used). I've had that happen a few times over the years. I'm reluctant to buy another budget Karcher - this one is my third. Oh, the generic name for a HP cleaner in Australia used to be Gerni after the Danish brand. I had a Gerni but it failed with earth leakage in the motor which would trip off the power.

Thx for the video

Awasome video. Well explained

Excellent..thanks

Thanks sir

Thanks a Million

Great video mate I just wish you had gone one level deeper into the gear box.When my K2 was turned on it would instantly start like the wand trigger had been puled and the only way to stop the motor was to turn it off at the switch. I pulled my K2 apart following your instructions and everything was fine so I dug a little deeper and found the nylon gears attached to the drive shaft had been shredded. My k2 is only a couple of months old as well. It is a warranty claim but I cant fine the Proof of Purchase. so its fix or buy a new one. The cost to replace the Nylon gears plus shipping to Thailand is more that the cost of a new K2 sadly. Anyway thanks for the great insights it was a big help .

Top 5 all time intro right here folks.

Best video thanks bro

Hat off and thanks

I have to commend you on your instructional video. I did not detect even once where you used the hackneyed phrase "Now we're going to >go ahead< and remove the four Allen screws."

Es el primer video que encuentro de este modelo que es el que yo tengo, la mía perdió presión y solo dispara agua jabonosa. Ahora se que está muerta y no hay remedio facil. Debo llevarla al taller de servicio. Gracias.

Excellent tutorial. I find that all the parts are so expensive for these pressure washers. It’s cheaper to buy a used working pressure washer for $30-50 instead of taking the time to fix them.

I have a leaking K3 000. I opened up the power washer and found that the housing at 6:48 has a hairy crack. I tried to repair it by using different kind of glues, including hot glue. Nothing worked and it is still leaking like crazy when I re-assembled everything and turned it on with water supply. I have done some researches but it looked like that the only solution to to buy the plastic housing. It costs CAD80 to 90 including shipping to buy the part and to wait a month or so to get it. And it is not guaranteed that this is the only problem. I like DIY stuffs. Finally, I tried plastic welding method. I have a basic soldering iron and I set it to the highest temperature and melted the platic material along the crack. Then I melted a zip tie to add thickness to the cracked surface. According to some youtube tutorial, I covered a tiny bit of steel wool (kitchen stuff after washing and drying) on top of the melted zip tie material. Applied soldering iron again to the steel wool to integrate it to the surface of the housing. Then, there is another step after the above procedure. I mixed baking soda and super glue on top of the melted plastic. I added just enough baking soda on top and applied bit by bit super glue to the Baking soda. Thin layers will do. After a few minutes, a very hard layer was covering the wounded housing. When I reassembled the washer, I found the flimsy soft plastic switch control was broken. I used the same baking soda and super glue method to fix it. It was a success. Pay attention and don't add excessive glue. Otherwise, you won't be able to turn it on and off. Anymore leaking ? Not anymore. The pressure is back to life. Happy spraying everybody. I believe that cracked plastic is reparable and hopefully people will benefit from my experience.

Great video, you explain things so well it made me want to fix my own pump which is a Simoniz (not a Karcher) but I suspect it looks the same. Question: Did the pump run well after the overhaul? Thank you for the great tutorial!

My powerwasher is a stanley fairly new but it started making a knocking noise do u have any suggestions thanks

Hello. Good breakdown. Had to look at a good diagram with all the parts. I opened everything again while watching your video, and this time washer pieces fell out. It turned out to be an O-ringing on the high pressure connector. It had low pressure work a while, then surged the next day, with no real pressure. Wish I noticed the pieces before taking all of the guts apart. Definitely check the O-RIngs as pieces are taken apart. Here it is, a cheap fix. Will see in a few days when I get it in the mail. Couldn't find local. Karcher O-Ring D. 10 X 2 Nbr 70 - 6.362-151.0

Great video! Thanks to this video I currently have mine apart and about to order the part. I've had my 3.960 for about a year and all of a sudden the surging issue started. By the way, you mentioned using 10W-40 and towards the end mention 15w-40. I'm assuming the latter is preferred? Also, what did you use to clean the gunk off the springs?

How did you get the bottom screws out, around the type sticker. Those holes feature some kind of narrowing down, so none of my bit socket screwdrivers seem to fit.

i lost my check valve.. I wanna know if the machine can work without that little peace of plastic ?

👌👌👌👍👍👍👍👍👍

If the pump restarts like on 0:44 and no water is leaking outside of it, probably it is the manifold, part in 13:07. If it is not leaking that means the crack is internal between low and high pressures. If it restarts and leaks outside,it is cyl.head (part in 10.03). Best way to check - take off yellow covers and see where the water leaks. Very important part is shown in 13:16 (with green cap) in water inlet. That is pressure relief valve. When you close water gun internal pressure rises very rapidly and that little valve bypasses it in water inlet. You can take it out, carefuly take the cap off (beware of small metal ball inside of it) and see if it is clean inside and parts inside move freely. If it is stuck (because of dirty water) pressure inside the pump stays very big and that leads to cracking...

Hi could you tell me if I am able to purchase a head unit pump for my karcher type 211 all I can see is type k11 k12 etc is mine k11??

I bought the same model power washer from Home Depot on sale for $99.

Can power steering fluid be used instead of motor oil

Thank you for an excellent video. Explanation is clear. I have a Karcher K5. It does nothing when I turn it on, doesn't make a sound. I have verified power to the unit and run water through the pump for 30 minutes (to get rid of any air in the system). It worked perfectly when I put it away in my heated workshop for the winter. Any Ideas on what the problem is?

good video - great job - but what is missing between taking it apart and reassembly is - how did you test the part you took out - and what was done with the leaking of said part?can one put a water hose to it? put some caps on the outlet and see where it leaks from? because you mentioned that you replaced one part. but weren't really sure if or not it would fix the problem - which ultimately it did not fix your initial problem . . . . otherwise very good . . .

why you dont use grease ?

Can you tell me if they make an adapter for that style hose fitting, (where the hose connects to gun, at quick connect) to fit the M22 style wands? Or the name of that end on hose? Thanks

great video. do you have a video fixing hand gun?

Very clear and briefly explain video tq , i want to know is it ok to add 10w40 along with the previous grease?

do you have a video after you fix it. thankscongrats !

Hi. I have the k4 karcher and when i turn it on it wont stop pulsating every 1 second and when i press the trigger the water pressure has went way down too. I took it apart and couldnt see any leaks around the head, i even connected the hose back on it and left the water running for a couple minutes and kept looking at it and still saw no leaks, i then turned the power on and it still kept pulsating. Because i didnt see any leaks now i dont know if its the head or not. What do you think

My Karcher electric power washer has no force behind the water when you squeeze the lever on the wand. How do I diagnose and repair that? Where do I find parts?

Excellent video, except it would have been nice to see how the black housing activates the switch in the white plastic housing at 7:02. At 11:10, you can see the white plastic pin that looks like it activates the switch through that hole that you see at 7:03. My unit works perfectly well except the motor/pump does not switch off all the time when I release the handle in the wand. I have taken the switch assembly apart, check the uF of the capacity, checked the resistance of the switch and checked all the wiring...no issues there. By the way, I have the K 3.67 M which is identical as far as the motor, pump and switch go.

Great video! My 10 year old Karcher K3.81M worked for a few minutes this morning, then stopped. I could not start. I cleaned the feed filter. It worked for a few minutes, then stopped. I had to turn the power to the washer off, and waited for ~15 min. Then I could start, then it worked for a few minutes and stopped again. Could you please advise how to fix? Thanks.

is oil better in the place of grease or grease is a better option?what comes officially from karcher inside it grease or oil(for pistons)?

Thanks for this video pal. I've replaced the head and control bit but mine is still pulsating? I'm stumped. No leaking water. EDIT: Anyone reading this, my pressure relief valve (small red tube in the inlet side of manifold) had grit sticking it open, took it apart, cleaned and greased and all working fine again.

I have allextreme power washer, in that if release the water trigger in gun, the motor is keep on running, due to this pressure is very low what to do

thanks for the video very easy to follow, however I never found any leaks or broken seals and I still have a pulsating problem. as soon as I turn it on its pulsates until I pull the trigger on the handle, as soon as I let go it starts pulsating again. I stripped it right down to the oil compartment - should this be fixed or has it ceased ?? is the motor finished ??

Is it water cooled like k4?

I have the same model as per video which is excellent by the way. Today I attached the water hose to the washer. Reset the the power supply. The light came on. I mistakenly turned the washer on before realizing the water source was off. The pump ran for all of 2 seconds before shutting down. Now the washer won't turn on. The power supply tests ok still. Any feedback would be appreciated.

Very helpful video! I had the same issue with my Karcher K3.86 and replacing the control head fixed the pulsing issue. But, now I have a new issue. Since replacing the control head, the motor won't turn on automatically when pressing the trigger on the wand. However, it will turn on if I first hold down the trigger while the motor power switch is in the OFF position, then while continuing to hold down the trigger, flip the power switch to the ON position, the motor will turn on and run at full pressure. When I release the trigger the motor shuts off and then re-engaging the trigger does not turn the motor back on. Water will come out but with out the high pressure. Any ideas what I may have done wrong when replacing the control head?

Exelente video, se podria que de favor estuviera en español. Gracias.

Very good job Have U the same for the k4.650 or can u Help me to find it Thank in advance

I love this tutorial but seriously in this part of the world these machines come up on sale for 125 Canadian. Love DIY but not when it costs more than just buying another one