I have a karcher K2.89. It works fine apart from the detergent reservoir - nothing seems to pass through and we' ve lost the manual. Can anyone please advise?

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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Greetings from Toronto :>)

Two different wands for different uses and one has a low (hardly any) pressure mode for spraying detergent. Have you read the manual? I found it.

https://www.ppe-pressure-washer-parts.com/files/1961581/uploaded/K3.48M.pdf

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there should be a labeled fill line on the clean water resavore

If you have not yet found a solution, then here are some steps to take.
1. The soap dispenser only works on low pressure!!!!!!! So you have to REMOVE the high pressure Sprayer so that all you use is the Trigger Gun without the Extender.
2. Pull out the thin Plastic Hose with the filter attached in the end, and insert into your container of detergent.
It will only splatter the detergent over the area you want to clean, so you will then need to REATTACH the SPRAYER into the hand gun to work with the soap to lather, clean and spray of till clean.
This seems to be the way the system works on this model......also known as K2.36M (AU) in Australia or (EU) in Europe on the Karcher.com.au site then Service then Manuals. or on the link below.
Hope this helps any of you who has misplaced their Owners Manual just like I did and had a great problem trying to find a link as Karcher doesn't recognize the Model No: as Winner 10 or 11.

Cheers, Luke

Go to this LINK and find the part/diagram that can help you.

It sounds to me like the unloader valve is bypassing internally.

If you are talking about the oil in the pump then it should be 10W30 but must be NON DETERGENT. Remember the reservoir should only be 1/3 full

Hello:
10W30 oil but make sure it is NON DETERGENT. Also be sure the reservoir is only 1/3 to 1/2 full

The first thing to do is check the nozzle setting on your spray lance. The nozzle setting is adjustable (by twisting it) and, if it's set to high pressure, cleaning fluid will not be drawn up from the reservoir. Cleaning fluid will only be drawn from the reservoir when the nozzle is set at low pressure. (Even at the low pressure setting, this problem can occur if you use an extension high-pressure hose.)
You say the machine has never been used, so the nozzle setting is the most likely cause of your problem.  Other possible causes are highly unlikely to occur in a new machine.  If adjusting the nozzle doesn't help, I suggest you contact the dealer from whom you bought the machine.
I hope this helps.  Your feedback is valuable to me so please remember to rate this response.