Nipple Chemistry Spare Part - 9.755-183.0

I have an older (2007) Karcher pressure washer model K2.26M 1.601-602 which has held up really well until recently. I mixed up a soap solution and placed the suction tube in as usual and switched on the washer. There seemed to be some soap spraying from the spray wand when triggered but I noticed my soap solution bucket was getting ... Read more more full by the minute. I pulled the clear hose from the bucket and noticed clear water running out of the hose that was supposed to only suck in my soap solution. So I assumed there may be a problem with a valve that controls this function. I looked at the eReplacementParts diagram and then located the Detergent Inlet Assembly Part Number 9.755-183.0 and placed an order. Around a week later I got an email saying that this part was not available but was placed on back order. It finally came in a couple of weeks later and I started the disassembly of the PW. Disassembly of the housing required a long shank torx screwdriver to separate the housing in half, remove the U-clip from the pressure hose outlet for outlet pipe removal, then remove the 4 large allen screws from the washer piston head to free up removal of the shield covering the detergent inlet assembly which has the clear tube attached to it. With clear hose and shield removed I used pliers to grip the old assembly and twist and pull to break the old seal loose until it came out. Now you can install the new assembly in the reverse order that all was removed. Be careful as the head assembly is spring loaded as you place the 4 head screws back into place. I finished reassembling the PW, connected it to the water hose, plugged it in, turned it on and squeezed the trigger and placed my finger over the clear detergent suction tube and now noticed a slight suction only when the trigger was activated for applying soap from the wand. So the fix was a success and returned my old PW to usable status.