K 7.85M Karcher repair

Question moved from Laundry Washing Machines to Karcher.

Service Manual

https://www.manualslib.com/manual/1209347/K-Rcher-Hds-Middle-Series.html?page=20

Owner's Manual in German

https://www.libble.de/karcher-hds-755/p/591081/

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It sounds like you are having some issues with your Karcher Puzzi 10/1 carpet and upholstery cleaning machine. Here are a few things you can try to troubleshoot the problem:

1. Make sure that the hose is securely attached to the machine and that there are no kinks or blockages in the hose.
2. Check the filter to make sure it is clean and not clogged. If the filter is dirty or clogged, it can reduce suction power.
3. Check the solution tank to make sure it is properly seated and sealed. If the solution tank is not seated correctly, it can cause problems with suction.
4. Make sure that the machine is turned on and that the switch is set to the "suction" mode.
5. If the problem persists, you may need to take the machine to a Karcher service center for further diagnosis and repair.

I hope this helps! Let me know if you have any other questions.

My account pin on 0711825797

chemical injector activates only when low pressure is utilized try this remove hose from triggergun assembly with the water turned on engine off allow water to free flow out of hose remove the chemical hose from the barb located at pump with a paperclip or needle insert it into the hole of barb and slowly separate the ball inside the barb you should here it siphon and try not to look directly at the port you may get sprayed once freed reinstall all back together and try again.;0;0

My Karcher 5.91 has pressure and pumps perfectly but will not suck up the chemical cleaner

The first problem might be that you are trying to use the wrong nozzle, see this link to read more about what nozzle to use for detergents

If you still have an issue the problem is going to be in the chemical valve on the pump, there are two different styles they have on this type of machine, look at the links below on directions on how to repair your chemical valve.

Chemical Injector 1

Chemical Injector 2

Hi Twist the nozzle on the end of the lance and submerge you chemical pipe in a barrell of chemica, It will then draw chemical at low pressure.

Make sure that you have adjusted the nozzle on the end of the washer so that it produces low pressure as this is the only way it will ****.

detergent non return valve stuck, allowing water to back feed into the chemical tank.
depends on what machine it is as to where the non return valve is.

Dear Osville,
It is not clear what type of lance or nozzel you have. You said that the machine works fine with the circulating water jet(the turbo). So it seems the machine is fine. I do sometimes service variable nozzels and variable lances. But the best solution is to replace nozzels and variable nozzles and lances with new ones. Regarding the fan spray setting it could have no pressure because it might be in the chemical setting. The chemical setting lets out a fan shape flow of water, but with less pressure. The chemical system only works on low pressure in domestic washers, that is why it needs a low pressure flat spray. The pencil jet has 2 jets comming out because if it is a lance or nozzel with ball bearings, these ball bearings must have stuck in a wrong position. Also 2 jets can come out, due to a damaged nozzel hole.
Altogether, the best advice is to buy a new nozzel or lance...which ever your machine uses. All Karcher machines have their own specific nozzels, lances and high pressure hoses. You cannot change these from one model to another.
Regards,
Fulltech.