Question about Honda Karcher G2400HH-R Pressure Washer

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Unloader disassembly I have an Karcher HD 3500. I need to service the unloader. I have the sleeve out, but the piston seems to be hung up on something. Drawings are of no use because according to them it appears to just pop out. Any ideas?

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Posted on Jan 02, 2017

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SOURCE: need help getting to an cleaning stuck unloader

The cart body makes this process a little confining but it can be carried out without removing the pump from the motor.

Diagram courtesy of: pressureparts.gif


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  1. Refer to assembly 9 in the diagram. Remove the splash cup by working the push-on nut off the top of the cup.
  2. Remove two Torx fasteners (13) and twist the nylon valve retainer gently while pulling up to remove it. Be aware of the small parts under the retainer.
  3. The objective is to get the valve (12) out of the bore (A). Connect the hose and wand to the pump, make sure the wand valve is closed. Connect the water supply to the pump and turn on the water flow.
  4. Place a shop towel over the valve bore and with the throttle in the off position, pull the start cord briskly several times to see if enough pressure builds to pop the valve out of the bore. If not, set the throttle to low and start the engine. Unless the valve bore is really corroded, this should pop the valve out.
  5. If this process fails, you may have to unmount the pump and employ a more brutal approach that will likely require a new valve.
I have worked on my washer for the last 2-3 years to keep it going but I've opted to replace the pump this year. My replacement is an "AR RMV2G25D" (~$170) .

Posted on Jun 04, 2009

  • 174 Answers

SOURCE: i have a pressure washer with a faip 3 piston

I think your main problem is that the unloader valve needs to be lubricated. Use the very best water resistant bearing grease you can find. If you can e-mail me a pic of your unloader assembly I can try to explain how to set it up. firehead@roges.com

Posted on Sep 17, 2009

  • 1 Answer

SOURCE: Unloader Valve - Karcher Pressure Washer

where is the unloader valve locaed on a Briggs Stratton pressure washer?

Posted on Oct 03, 2009

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1 Answer

Pressure off and on every few seconds with my karcher 3000BH


hi there rjcomer2

here is web site for parts
http://www.ereplacementparts.com/karcher-2500-11944010-pressure-washer-parts-c-33388_33389_33973.html

sounds like you have a unloader valve problem or a crack in the pressure manifold housing between pressure outlet and unloader valve assy allowing unloader to cycle on/ off

or some dirt trapped in the unloader valve seat , make sure you have good supply of water - ie good flow from tap to pump

try cleaning unloader 1st and fitting in line tap filter

hope it helps

pauly46

May 20, 2011 | Karcher 2500 PSI Pressure Washer

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I have a Karcher HD 3101 pressure washer. The out pressure is not working. Is there a unloader valve that needs to be cleaned?


Yes, the unloader needs to be lubed. Send me a email at justin@wmpcs.com with a discription of what you just listed and I will send you a pdf file on how to repair it.

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Unloader Valve - Karcher Pressure Washer


where is the unloader valve locaed on a Briggs Stratton pressure washer?

Oct 02, 2009 | Honda Karcher G4000RH Pressure Washer

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Need schematic and instructions for service


Here is a schematic HD2600DK

The unloader is on D-2 ( all the parts between #5 and #11)

Sep 10, 2009 | Karcher Garden

1 Answer

Clean and unloader valve on Karcher hd3500 pressure washer -intermittent pressure on and off. Cleaned inlet screen. Think unloader valve is is under pressure knob? Will cleaning help?


Hi:
Cleaning it is not enough. You need to make sure the o-rings are in good shape and grease it with a very very good waterproof grease. Here is a schematic of the pump. The unloader is parts 7 to 13 on D-2

Sep 08, 2009 | Karcher Garden

1 Answer

The unloader valve seems to be hanging up!


The o-rings on the unloader may be worn out. Also you have to lube it with extremely good waterproof grease

Sep 06, 2009 | Karcher G3025OH Pressure Washer

1 Answer

Where is the unloader valve on my pressure washer


is not necessarily a cap, but could be a screw in plug, that should be close to the hose hook-up on the pump Inside there there should be a round ball and a spring that you can tighten or loosen to adjust the unloader and if it has been used ALOT, where the ball seats there could be grooves cut in there and you might need to get a valve kit to fix it

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I have a sticking unloader valve in my Karcher 3050. where is it and how do I fix it?


Hello:
Here is a schematic. On page 2.1, part #1 is the unloader valve. You need to remove it and lube it with a very good waterproof grease. Also insure the O-rings are in good shape and the spring action is working.

Jul 07, 2009 | Karcher G 3050 OHR Gas Pressure Washer

1 Answer

How do you clean the unloader valve on a power washer pump?


The unloader valve usually is replaced. I dont know if you can get o-rings for it. But if you want to take it apart, there will be a crown or cap style nut just below the spring. Unscrew it completely and you will be able to remove the spool. There is just a series of o-rings on it.

May 10, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

My Karcher HD 1050 DE has lost pressure, ive had new valves put on it but still has no go in it


could be allsorts. seals worn. ceramic pistons split, inlet manifold split( frost damage), unloader valve sticking, etc etc.

Put mains water pressure onto it and look for leaks, then run machine and see if it increases pressure, if not i would suspect unloader valve sticking.....

Not very familiar with the 1050 but i'm a service engineer for high press cleaning equipment...

Oct 12, 2008 | Karcher 2500 PSI Pressure Washer

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