Q: Does the Kärcher RM 555 detergent need to be diluted?

Yes, the RM 555 detergent must be diluted before use. It is a concentrate that needs to be mixed with water according to the manufacturer's instructions. Recommended dosage The standard dilution is 1:10 (1 part detergent to 10 parts water), although you can adjust this ratio depending on the level of dirt and the type of surface to be cleaned. Application with the K 2 Horizontal You have two options for applying the diluted detergent to your Kärcher K 2 Horizontal pressure washer: Use the Plug n Clean system if your model is equipped with it - this system allows for direct injection of the product into the circuit Pre-apply the detergent manually with a sponge or sprayer, then let it sit for a few minutes before rinsing Operating procedure After applying the diluted detergent, let it act briefly on the surface, then rinse thoroughly with water using your high-pressure cleaner to completely remove the product. Tip: Always check the instructions for the RM 555 detergent on the packaging for precise dosages suitable for your type of work (light, medium, or intensive cleaning).

Question 1

How to remove the clip from the spray gun?

Accepted Answer

The clip of your Kärcher K 3 Classic spray gun is used to secure the lance. To remove it:

Locate the plastic clip at the end of the gun
Gently press on both sides of the clip to release it
Carefully pull the lance towards you to detach it

This operation allows you to replace the lance or access the inside of the gun for cleaning. Handle with care to avoid damaging the clip.

Question 2

How to disassemble the filter of the Kärcher BP 4 pump?

Accepted Answer

Here are the steps to disassemble the filter of your Kärcher BP 4 pump:

Unplug the device from the power outlet before any intervention
Unscrew the cover of the filling neck
Remove the pre-filter and the non-return valve to access the filtration elements
Clean with running water the removed elements to eliminate deposits and dirt
Reassemble correctly ensuring the proper mounting position (check the cutout of the pre-filter)

Maintenance tip: Regularly clean the pre-filter, especially if it is dirty, to maintain good flow and avoid pump operation issues.

Question 3

How to unlock and remove the filter cassette from the Kärcher MV 5 Premium?

Accepted Answer

To unlock the filter cassette of your Kärcher MV 5 Premium:

Steps

Locate the unlock button: It is located on the side or at the front of the filter cassette housing
Press firmly on this button to release the locking mechanism
Unclip the cassette: Slightly lift the filter cassette after pressing the button - it should detach easily from the housing
Completely remove the cassette from its compartment

Important: The Kärcher MV 5 Premium is designed for tool-free disassembly. If the cassette is resistant, ensure that you have fully pressed the unlock button - do not force it.

Refer to the illustrations in the PDF manual above to precisely locate the unlock button on your model.

Question 4

How to clean the filter of the Kärcher MV 5 Premium vacuum cleaner?

Accepted Answer

The filter is a key component of your Kärcher MV 5 Premium vacuum cleaner. Here’s how to clean it properly:

Regular filter cleaning

Turn off the vacuum cleaner and unplug it before any intervention.
Access the filter by opening the compartment designed for this purpose on the device.
Gently tap the filter over a trash can to remove accumulated dust. You can also use the provided brush attachment to clean the folds of the filter.
For a more thorough cleaning, run the filter under warm running water and let it dry completely before reinserting it (at least 24 hours).
Never use hot water or chemicals that could damage the filter material.

Cleaning frequency

Clean the filter every 2 to 4 weeks depending on your usage. A clogged filter reduces suction power and overloads the motor.

Filter replacement

If the filter is torn, cracked, or does not become clean even after washing, it must be replaced. Check for compatible replacement parts for your model.

Question 5

Does the Kärcher RM 555 detergent need to be diluted?

Accepted Answer

Yes, the RM 555 detergent must be diluted before use. It is a concentrate that needs to be mixed with water according to the manufacturer's instructions.

Recommended dosage

The standard dilution is 1:10 (1 part detergent to 10 parts water), although you can adjust this ratio depending on the level of dirt and the type of surface to be cleaned.

Application with the K 2 Horizontal

You have two options for applying the diluted detergent to your Kärcher K 2 Horizontal pressure washer:

Use the Plug n Clean system if your model is equipped with it - this system allows for direct injection of the product into the circuit
Pre-apply the detergent manually with a sponge or sprayer, then let it sit for a few minutes before rinsing

Operating procedure

After applying the diluted detergent, let it act briefly on the surface, then rinse thoroughly with water using your high-pressure cleaner to completely remove the product.

Tip: Always check the instructions for the RM 555 detergent on the packaging for precise dosages suitable for your type of work (light, medium, or intensive cleaning).

Question 6

How to extend the telescopic handle of the Kärcher VC 5 Cordless?

Accepted Answer

The telescopic handle of your Kärcher VC 5 Cordless may not extend if it is locked in its parking position. Here’s how to release and adjust it:

Steps to extend the handle:

First, free the device from its parking position by holding the brush on the ground with your foot and slightly tilting the device backward.
Then, press and hold the extension button and adjust the suction hose to the desired length.

If the handle is stuck:

Check for any obstruction inside the telescopic hose.
Use a screwdriver to gently lift the handle cover.
Remove any detected obstruction using a fine, sharp tool.

Important: When the device is parked, the telescopic hose remains retracted by safety design. Always ensure to release the parking position before attempting to extend.

Question 7

How to activate the suction system and the spray field of the Kärcher SE 5.100 Plus?

Accepted Answer

On the Kärcher SE 5.100 Plus, the suction system and the spray system are two independent functions. Here’s how to activate them:

Activating the suction (vacuum)

Plug the device into an electrical outlet
Press the suction button - the suction motor should start
Completely close the auxiliary flap on the handle to optimize suction power

Activating the spray (pump)

Press the spray button
Pull the lever on the handle to start the water jet

If nothing works

First, check these points:

The device is properly plugged in and powered
The dirty water tank is not full - empty it if necessary
The hoses are not clogged - check the airflow by placing your hand at the suction inlet
The clean water and detergent tanks are filled (if you are using the spray function)

If the problem persists after these checks, one of the two functions may be defective - test them separately to identify which one is causing the issue.

Question 8

How to replace the cartridge filter of the Kärcher A 2204?

Accepted Answer

The cartridge filter of the Kärcher A 2204 is a key component of the vacuum cleaner that must be replaced regularly to maintain optimal suction.

When to replace the filter?

Replace the cartridge filter when:

It is heavily soiled or damaged
Suction decreases despite cleaning the filter
You notice visible signs of wear

Replacement steps

Turn off the vacuum cleaner and unplug it from the electrical outlet
Access the filter (usually located in the upper part of the device)
Carefully remove the old cartridge filter
Install the new filter ensuring it is correctly positioned and securely fastened
Close the access to the filter

Tip: Check the label on your old filter for the exact reference of the compatible replacement filter for your Kärcher A 2204. You can also contact Kärcher customer service to obtain the appropriate replacement part.

Question 9

Why does my pump keep running after the tank is empty in automatic mode?

Accepted Answer

If your SP 17.000 pump continues to operate while the tank is empty in automatic mode, it generally indicates that the level sensor is no longer detecting the liquid correctly. Here’s how to resolve this issue:

Checks to Perform

Sensor Position: According to the manual, the sensor must be properly positioned on the rail. The higher the sensor is placed, the sooner the pump will stop when the level drops. Ensure it is securely slid and stable on its rail.
Sensor Condition: Inspect the sensor for any dirt, signs of abnormal moisture, or physical damage. A dirty or wet sensor does not detect level changes correctly.
Contact with the Liquid: The pump automatically stops after about 15 seconds if the sensor loses contact with the liquid. Check that the sensor indeed loses contact when the level drops - if the liquid remains partially in contact, the pump will continue.
Type of Liquid Used: Some very viscous or differently composed liquids may hinder proper detection. Ensure you are using a transport liquid compatible with the sensor of this pump.
Resetting: Try repositioning the sensor slightly higher on the rail to see if this improves detection and automatic stopping.

If after these checks the pump continues to run, the sensor is likely faulty and would need replacement.

Question 10

The BP 4 pump stops automatically after about a minute in auto mode, the A light flashes, and it needs to be restarted manually - how can I solve this problem?

Accepted Answer

This stop/restart cycle after one minute in automatic mode generally indicates that the pump is not drawing enough water. The auto mode has a protection feature that shuts off the device if it detects prolonged dry running, hence the flashing A light.

Check in this order:

Sufficient water level - Ensure that the water source (tank, well, basin) contains enough water. The pump's inlet must be submerged.
Clogged pre-filter - Remove and clean the pre-filter under running water. Deposits reduce flow and may trigger the protection system.
Intake hose - Check for any kinks, crushes, or blockages obstructing the inlet.
Check valve - Clean it also under running water. A dirty valve prevents proper priming.
Discharge leak - Inspect the entire discharge circuit (hose, fittings, outlet). A significant leak is enough to drop the pressure and restart the cycle.

Tip: After each cleaning, check that the pump can run for more than a minute before the next stop — that's a good sign. If the problem persists after addressing these points, consult Kärcher customer service.

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