How to REPAIR a Karcher Dirt Blaster

Hi, this video shows you some possible fixes for a faulty Karcher Dirt Blaster.
If your Karcher Dirtblaster has stopped spinning, has weak jets or causes your pressure washer to cut on and off, then you may be able to fix it.
Often dirt or scale can cause problems which is fixed by cleaning. If wear has taken place then it might be repairable by using a washer under the ball bearing, or pulling out the nozzle a tiny bit.
The Dirtblaster in the video couldn't be fixed by cleaning, so it needed a washer under the ball bearing to make it work again.
If one of these methods worked (or didn't work), or if you found another way to fix your Dirt Blaster, then please add it down in the comments to help other viewers.
Many thanks, Vince.

[malcolmwindust]

At last a really useful video on the lance head! No waffle, clear and precise. Thanks very much for sharing and a very big thumbs up 👍 from me!

[catalinuk]

I cut a small part of a spring from a ballpoint pen, and it worked like a charm. Thank you!

[exilejock]

Useful video thanks, for those that are scratching their heads wondering what size washer to use it's an M2.5

[truewordz]

I should have watched this video first as it would have saved me £15.00. A much appreciated set of instructions, Thank you very much sir, absolutely faultless. 💯👏🏾

[paulsudworth]

Watched the incredibly informative and helpful step by step video and repaired my lance with a 1p washer....saved me buying a new one at £30! Brilliant!!

[bradjohnson]

Very useful video my pressure washer was pulsing. I cleaned it out and it worked saved me 300$. Thank you.

[johntabbron]

I dismantled the nozzle and saw that the O-ring had become unseated causing a leak and loss of pressure. That saved me almost £60 ! Many thanks !

[nejsanerkin]

Rather than using a small washer, scavenge a spring from a ballpoint pen. Cut it down, to say 5mm and place under the bearing ball. The cut down spring should be long enough to allow compression once the ball has been refitted, but not so strong as to push the ball out. My lance worked perfectly with this mod. Only drawback is I suspect that the spring will rust, but these springs are easily available. The spring should mean the ball can move to the optimum point without having to finesse the packing thickness of a washer.

[paunixon]

Brilliant, sir. Thanks. I had mine apart, cleaned seals, nearly ordered a new part, when I stumbled on your quick fix video. Beautiful - the K2.97 works like a charm again after doing the dreaded pulse. Cheers from and Englishman in Canada.

[johnrenshaw]

Hi from Spain. Excellent and clear presentation. You have just saved me about Euro 40.00 for a new one. I just need to find a small washer, once again thank you, John.

[vexpired]

Many thanks for this tutorial, l like the way you don't waffle off the subject in hand. A pleasure to listen to you.

[alangillies]

Excellent and informative video, got my lance working again for a £4.80 pack of washers so I can fix it 19 more times if necessary! Grinding the washer to the right size was the longest part of the fix.

[christinewerminghaus]

This is genius! That was an easy fix, even for a technically unintelligent accountant like me.
The inside part looks a bit different in my pressure washer, the ball bearing cage is closed at the bottom. However, I took a little washer and put it into the cage, put the ball bearing back, used a bit of silicone spray before reassembling and it worked again. Saved me at least 35£/40€ for a new dirt blaster. Thanks a lot for the brilliant explanation!

[GCCRacing]

Just saved me £45 for a new Lance. Much appreciated. Thanks !

[michaelpower]

The best I ever hear Explaining something on YouTube.

[Geoffree]

Excellent instructions ... thank you very much! Fixed by moving the nozzle as 6mm washer wouldn't fit. I only use the washer for about a day each year so shouldn't have worn down ... but then my Karcher washer needed a new pump after the first year.

[paulbaber]

Brilliant thanks for the solution.
Hardest part is finding a tiny washer. I couldn't but found a dome head 6mm nut but it woudnt fit.
My solution was to cut a cross section of a RAWL plug. Pushed it in and then put the ball bearing back in.
Job done
Tks

[nuffsaid]

this happened to me this weekend after it had lain unused for several months, so glad you uploaded this as every little tip helps. Thanks mate.

[Jademalo]

Thank you so much for this, the washer totally fixed it!
We had to use a pair of grippers on the main shaft at the bottom to get enough torque to loosen it, it felt like the shaft would bend otherwise. We tried the nozzle method but had no luck, but once we filed a washer to be able to fit it immediately started working again perfectly.

Thank you for this super clear and concise video!

[dozerblade]

great information thanks, off to my garage now to find some small washers, had it apart already twice. Didn'i go to plan, couldn't find a washer that small, so ended uo trimming the plastic off the ball end and then pushed out the nozzle from the other end only pushing it back a small way before screwing it up. Worked fine.