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See part D-12 in the diagram
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Spill Valve

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 Fits your K2400HH!
 Fits your K2400HH!
PartSelect Number PS9949597
Manufacturer Part Number 4.591-040.0
Manufactured by Karcher
Product Description

Spill Valve Specifications

This spill valve is for pressure washers. Spill valve opens when water flowing through the pump gets too hot, releasing the hot water in exchange for cooler water.
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Troubleshooting
This part fixes the following symptoms:
No or low pressure
This part works with the following products:
Pressure Washer.
This part works with the following products:
Karcher.
Questions and Answers

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    Jose
    December 29, 2017
    How to replace stuck spill valve ?
    For model number Karcher 2300 G Pressure Washer
    Hello Jose, Thank you for your inquiry. Before beginning this repair you will want to be sure you have a set of Torx bits and Allen wrenches or ratchets as many pressure washers incorporate these types of bolts and screws. Start by removing the pump as you can access the spill valve without removing the pump from the pressure washer, but you may find it more difficult to leave the pump on because the pressure washer frame doesn't leave a lot of room for the repair. You will find it easier to remove the pump from the pressure washer before beginning the spill valve repair. 1. Remove the four bolts that hold the pump to the pressure washer. 2. Use your box or wire cutters to cut the detergent line where it attaches to the pump. 3. Now you can remove the pump from the pressure washer engine. Just slide it out and away from the engine. Now that you've removed the pump, you can remove the spill valve without the pressure washer frame getting in your way. 1. Use a flat-head screwdriver to pry up the button cap. Then remove the black thermal valve cap. 2. Remove the two screws that hold the thermal release valve to the pump. These screws may require Torx 30 bits, depending on the pressure washer. Karcher pressure washers use Torx bits to fasten the thermal release valve. Slowly remove the thermal release valve--a spring is hiding beneath it. Remove the thermal release valve spring. 3. Now you can remove the spill valve. You will need a good set of needle-nose pliers to grip the tab on the valve. Hold the pump assembly firmly, and pull the spill valve out of the pump. It is normal for this to take a good bit of force. 4. Lubricate the new spill valve. Before installing your new valve, you need to lubricate the top o-ring (the o-ring is green on Karcher spill valves). Do not lubricate the bottom o-ring--it holds the valve in place. 5. Use your pliers to grasp the tab on the new valve and place it back into the pump. 6. Replace the thermal release valve spring. Now fasten the release valve back into place with the Torx screws. 7. Fasten the button cap by setting the thermal release valve cap into place and use a screwdriver to pound the button cap back onto the assembly. Now that your new spill valve is installed, you can reattach the pump to the pressure washer engine. 1. Cut off the old detergent hose. Cut off the leftover piece of detergent line on the pump nipple. 2. Slide the pump into place on the engine and begin tightening the bolts. Once the bolts become snug, tighten each one a little bit at a time so the pump creates a solid seal with the engine. 3. Fasten the detergent hose. Now all you have to do is slide the detergent line onto the pump nipple. Hope this helps!

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    Jeff
    2 days ago
    My water pump is leaking so much water that there is no pressure.
    For model number G2500VH
    Hello Jeff, Thank you for contacting us. We have researched the model you have provided and have found the part you are looking for is Fix Number: FIX10020796. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you!

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          Model Cross Reference
          This part works with the following models:
          PartSelect Number: PS9949597
          Manufacturer Part Number: 4.591-040.0
          Brand
          Model Number
          Description
          Karcher
          G1800LB
          Pressure Washer - Pressure Washer
          Karcher
          G2000ET
          Pressure Washer - Pressure Washer
          Karcher
          G2000MK
          Pressure Washer - Pressure Washer
          Karcher
          G2000QT
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          Karcher
          G2300IB
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          Karcher
          G2301LT
          Pressure Washer - Pressure Washer
          Karcher
          G2400HH
          Pressure Washer - Pressure Washer
          Karcher
          G2401OH
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          Karcher
          G2500HT
          Pressure Washer - Pressure Washer
          Karcher
          G2500LH
          Pressure Washer - Pressure Washer
          Karcher
          G2500OH
          Pressure Washer - Pressure Washer
          Karcher
          G2500PH
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          Karcher
          G2500VH
          Pressure Washer - Pressure Washer
          Karcher
          G2600OR
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          Karcher
          G2600PH
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          Karcher
          G2600VH
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          G2650HH
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          HD2500HK
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          K2200IB
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          Karcher
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