K 4 Power Control

59806950 (01/26)

59806950 (01/26)
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Read this safety chapter and these original instructions before using the device for the first time. Proceed accordingly. Keep the original instructions for future reference or for future owners.
In addition to the information included in the operating instructions, you also need to take into consideration the general safety regulations and accident prevention guidelines applicable by law.
Warnings and information notices attached to the device provide important information for safe operation.
Indication of an imminent threat of danger that will lead to severe injuries or even death.
Indication of a potentially dangerous situation that may lead to severe injuries or even death.
Indication of a potentially dangerous situation that may lead to minor injuries.
Indication of a potentially dangerous situation that may lead to damage to property.
Operation in potentially explosive areas is prohibited.
Never aspirate solvents, liquids containing solvents or undiluted acids. These include, for example, petrol, paint thinner or heating oil. The spray mist is highly flammable, explosive and toxic.
Damaged wheels / tire valves are dangerous to life. Wheels / tire valves can be damaged by the high-pressure jet and burst. The first sign of this is discoloration of the tire. When cleaning wheels / tire valves, maintain a spray distance of at least 30 cm.
Do not use the unit if there are no persons with appropriate protective clothing within reach.
Do not point the high-pressure jet at yourself, e.g. to clean clothing or footwear.
Do not point the high-pressure jet at people, animals, live electrical equipment or at the device itself.
Do not spray any objects that contain substances hazardous to health (e.g. asbestos).
Check the unit and accessories, such as the high-pressure hose, high-pressure gun and safety devices, for proper condition and operational safety before each operation. Do not use the unit if it is damaged. Replace damaged components immediately.
Use only high-pressure hoses, fittings and couplings recommended by the manufacturer.
Risk of scalding. When disconnecting the supply hose or high-pressure hose, hot water may escape from the connections after operation.
Never operate the unit without a system separator on the drinking water network in accordance with valid regulations. Ensure that your domestic water system connection at which the high-pressure cleaner is operated is equipped with a system separator in accordance with EN 12729 type BA.
Water that has passed through a system separator is no longer considered drinking water.
Never leave the device unattended while it is in operation.
A recoil force acts on the high-pressure gun due to the outgoing water stream at the high-pressure nozzle. Ensure a secure footing and hold the high-pressure gun and spray lance firmly.
Accidents or damage caused by the device falling over. You must ensure stability before all activities with or on the device.
Do not operate the device at temperatures below 0 °C.
Wear suitable protective clothing and safety goggles to protect against water or dirt that splashes back.
Aerosols may be generated during the use of high-pressure cleaners. Inhalation of aerosols may cause damage to health. Depending on the application, the use of fully shielded nozzles (e.g. surface cleaners) can significantly reduce the emission of aqueous aerosols. Depending on the environment to be cleaned, wear a suitable FFP 2 category respirator or comparable to protect against the inhalation of aerosols if the use of a fully shielded nozzle is not possible.
Connect protection Class I equipment only to properly earthed power sources.
Connect the device only to an AC power supply. The voltage specified on the type plate must match the voltage of the power source.
Only operate the device with a residual current circuit breaker (maximum 30 mA).
Never touch the mains plug or outlet when your hands are wet.
The mains plug and coupling of an extension cable must be watertight and must not be immersed in water. The coupling must not rest on the floor. Use cable drums that ensure sockets are at least 60 mm above the floor.
All live parts in the work area must be protected against water jets.
Only connect the device to an electrical connection that has been installed by a qualified electrician in accordance with IEC 60364-1.
Before each use of the device, make sure that the mains connection with mains plug is not damaged. If the mains connection is damaged, it must be replaced immediately by the manufacturer, the authorized Customer Service or by a qualified electrician in order to avoid any danger.
Do not impair or damage the power supply and extension cable by driving over, crushing, tugging or the similar. Protect the mains connection from heat, oil and sharp edges.
Unsuitable electrical extension cables are dangerous. Outdoors, use only electrical extension cables with sufficient line cross section that are approved for this purpose and labeled accordingly: 1‑10 m : 1.5 mm2, 10‑30 m : 2.5 mm2
Always unwind the extension cable completely from the cable drum.
For longer breaks in operation and after use, switch off the unit at the main switch / power switch and disconnect the mains plug.
Incorrect use of detergents can cause serious injury or poisoning.
Keep detergents out of reach of children.
Use only the detergents supplied or recommended by the manufacturer. The use of other detergents or chemicals may affect the safety of the device.
Disconnect the mains plug before carrying out any care or maintenance work.
Have repair work and work on electrical components carried out only by authorized Customer Service personnel.
Do not use acetone, undiluted acids or solvents, as they would attack the materials used on the device.
Risk of injury and damage. Take into account the weight of the device for transportation and storage, see Technical data in the operating instructions.
Suffocation hazard. Keep packaging film out of the reach of children.
Only operate the device in accordance with its intended use. Take into account the local conditions and beware of third parties, in particular children, when working with the device.
Persons with reduced physical, sensory or mental abilities or a lack of experience and knowledge may only use the device if they are properly supervised or if they have been instructed in the safe use of the device by a person responsible for their safety and if they are familiar with the resulting use of the device and understand the dangers.
Children are not allowed to operate the device.
Supervise children to ensure they do not play with the device.
Safety devices are provided for your own protection. Never modify or bypass safety devices.
Danger of injury!
Serious injuries due to missing, modified or ineffective safety devices.
Do not bypass or remove the safety devices and do not render them ineffective. Safety devices are provided for your own protection.The power switch stops you from operating the device unintentionally.
The lock blocks the trigger and prevents the device from switching on unintentionally.
If the trigger of the high-pressure pump is released, the pressure switch turns off the pump and the high-pressure jet is stopped. The high-pressure pump switches on again when the trigger is pulled.
The motor circuit breaker shuts off the device if power consumption it too high.
![]() | Do not point the high-pressure jet at people, animals, live electrical equipment or at the device itself. Protect the device from frost. |
![]() | The device may not be connected directly to the public drinking water network. |
The packing materials can be recycled. Please dispose of packaging in accordance with the environmental regulations.
Electrical and electronic appliances contain valuable, recyclable materials and often components such as batteries, rechargeable batteries or oil, which - if handled or disposed of incorrectly - can pose a potential threat to human health and the environment. However, these components are required for the correct operation of the device. Appliances marked by this symbol are not allowed to be disposed of together with the household rubbish.
Cleaning work that produces oily waste water,e.g. engine washing, underbody washing, may only be carried out at washing stations with oil separators.
Work with detergents may only be carried out on liquid-tight work areas with a connection to the sewage system. Do not allow detergents to penetrate water or soil.
The extraction of water from public waters is not allowed in some countries.
Current information on content materials can be found at: www.kaercher.de/REACH
The high-pressure cleaner is only intended for use in private households.
The high-pressure cleaner is designed for cleaning machines, vehicles, structures, tools, facades, terraces, garden tools, etc. with high-pressure water streams.
Only use original accessories and original spare parts. They ensure that the appliance will run fault-free and safely.
Information on accessories and spare parts can be found at www.kaercher.com.
The scope of delivery for the appliance is shown on the packaging. During unpacking, check the contents for completeness. If any accessories are missing or in the event of any shipping damage, please notify your dealer.
Illustrations are examples, details may vary

* additionally required
** optionally available

Before initial startup, mount the loose enclosed parts on the device.
Have the screws / dowels and an appropriate screwdriver ready.
Plug in the wheels.
Pay attention to the alignment of the hole.

Secure the wheels with 1 screw each.
Insert the stand.

Insert the 2 dowels into the holes as far as they will go.
Secure the stand with 2 screws.
Hook in the storage for the spray lances.
Secure the storage with 2 screws.

Secure the cover with 4 screws.

Attach the transport handle.

Secure the transport handle with 2 screws.
Hook the accessory net into the hooks.

Screw the coupling for the water connection onto the water connection of the device.

Place the device on a level, horizontal surface.
Risk of damage during operation with wound-up high-pressure hose!
Damage to the high-pressure hose.
Unwind the high-pressure hose completely and lay it out without knots, loops or twists before operating the device.Completely unroll the high-pressure hose.
Pull the high-pressure hose forward through the hose guide and lay it out without loops, knots or twists.

Insert the high-pressure hose into the high-pressure gun until it audibly clicks into place.
Make sure the nipple is oriented correctly.

Check the secure connection by pulling on the high-pressure hose.
Unwind the power cord completely.
Insert the mains plug into a mains socket.
For the connected load, see Technical data or type plate.
Observe the water distribution company regulations.
Risk of damage!
Damage to the device and accessories in case of contamination in the water or use of salt water.
Use only clean water and no salt water.Kärcher recommends the use of an optional Kärcher water filter.
Risk of damage when using hose couplings made of brass with AquaStop function from third-party suppliers.
Damage to the high-pressure pump.
Only use hose couplings with/without AquaStop function from Kärcher, hose couplings without AquaStop function or hose couplings made of plastic with AquaStop function from third-party suppliers.Plug the garden hose onto the water connection coupling.
Reinforced garden hose required: minimum diameter 1/2 inch (13 mm), minimum length 7.5 m, with standard quick coupling.

Connect the garden hose to the water line.
Open the water tap completely.
This high-pressure cleaner with the KÄRCHER suction hose is suitable for sucking in surface water, e.g.from water butts or ponds (for maximum suction height, see Technical data).
Unscrew the coupling on the water connection.
Fill the suction hose with water.
Screw the suction hose onto the water connection of the device and hang it in a water source (e.g. rain barrel).
Risk of damage due to dry running of the high-pressure pump!
Material damage
Switch off the device if it does not build up pressure within 2 min and proceed according to the instructions in Troubleshooting guide.To vent the device, do not fit the spray lance or any other accessories to the high-pressure gun.
Switch on the device by turning the device switch to the "I/ON" position.
To switch off the device, turn the device switch to the "0/OFF" position.

Unlocking the trigger.

Actuate the trigger.
The device switches on.
Allow the device for run a maximum of 2 minutes until the water escaping from the high-pressure gun is free of air bubbles.
Release the trigger.
Lock the trigger.
Risk of damage due to the pump running dry!
Pump damage
Switch off the device if it does not build up pressure within 2 minutes. Proceed according to the instructions in Troubleshooting guide.During operation, the pressure indicator on the high-pressure gun displays the set pressure level.
Turn the Vario Power spray lance to set the pressure levels SOFT, MEDIUM or HARD.
Dismantle the spray lance on the high-pressure gun to set the MIX pressure level and add detergent.
The sensitivity of materials can vary greatly depending on age and condition. The recommendations are therefore not binding.
When operating with surface cleaners and other accessories, the pressure indicator is not accurate.
Display | Pressure stage | Recommended fore.g. |
|---|---|---|
![]() | HARD | Stone tiles, asphalt, metal surfaces, garden utensils (wheelbarrow, spade, etc.) |
![]() | MEDIUM | Cars/motorcycles, brick surfaces, plastered walls, plastic furniture |
![]() | SOFT | Wooden surfaces, bicycles, sandstone surfaces, rattan furniture. |
![]() | MIX | All surfaces suitable for use with detergents |
Risk of damage due to too close a spray distance or inappropriate spay type!
Damage to painted or sensitive surfaces.
Keep at least 30 cm spray distance when cleaning painted surfaces.Do not clean car tires, paint or delicate surfaces such as wood with the rotary jet.Insert a spray lance into the high-pressure gun and lock it into position by turning it 90°.

Switch the device on.
Unlocking the trigger.
Actuate the trigger.
The device switches on.
Turn the Vario Power spray lance until the required pressure stage is indicated on the pressure indicator.
Health hazards due to detergents!
Serious damage to health
Observe the detergent manufacturer's safety data sheet.Wear the prescribed personal protective gear.Risk of damage from unsuitable detergents!
Material damage
Only use detergents that have been approved by Kärcher and are suitable for the objects to be cleaned.Observe the safety instructions, dosage recommendations and notes enclosed with the detergents.Use detergents sparingly.Risk of damage due to detergents acting too long and drying out!
Material damage
Do not apply detergent to hot surfaces and observe the maximum contact time.Do not allow detergent to dry on the surfaces being cleaned.KÄRCHER detergents ensure fault-free, effective operation. Please ask us for advice and observe our catalog or our detergent information sheets.
Detergents may only be added if the spray lance is removed.
A Plug 'n' Clean detergent bottle is required for operation with detergents. KÄRCHER detergents can be purchased ready for use in a Plug 'n' Clean detergent bottle.
Remove the lid on the Plug 'n' Clean detergent bottle.
Insert the Plug ’n’ Clean detergent bottle into the intake on the device with the opening facing downwards.

Remove the spray lance from the high-pressure gun.
The detergent is mixed with the low pressure stream during operation.
Spray the detergent sparingly on the dry surface and let it work for a while (do not let it dry).
Rinse off the loosened dirt with the high-pressure jet.
Pull the Plug 'n' Clean detergent bottle out of the holder and close it with the lid.
Place the detergent bottle in the holder with the lid facing upwards.
Operate the device for approx. 30 seconds with clear water to rinse the detergent out of the device and accessories.
Release the trigger.
The device switches off as soon as the trigger is released.
The high-pressure in the system is maintained.
Lock the trigger.
Place the high-pressure gun with the spray lance into the high-pressure gun holder.
For work breaks longer than 5 minutes, switch off the device.
Risk of injury from escaping water under high pressure!
Injuries
Only disconnect the high-pressure hose from the high-pressure gun or the device if there is no pressure in the system.Risk of damage due to frost!
Material damage
Empty the water completely from the device and accessories.Always protect the device and accessories from frost.Release the trigger.
Lock the trigger.
Close the water tap.
Disconnect the device from the water supply.
Unlocking the trigger.
Actuate the trigger for a maximum of 1 minute, until no more water escapes.
The pressure in the system is released.
The water is pumped out of the device to prevent frost damage.
Release the trigger.
Lock the trigger.
Switch off the device.
Pull the mains plug out of the mains socket.
Dismantle the accessories, empty them and stow them on the device, see Storing the device.
Risk of injury or damage due to the weight of the device!
Injury and damage.
Be aware of the weight of the device during transport and storage.Lift up and carry the device by the carrying handle.
Pull out the transport handle until it audibly engages.
Pull the device by the transport handle.
Before horizontal transport, pull the Plug 'n' Clean detergent bottle out of the holder and close it with the lid.
Secure the device against shifting and tipping.
Risk of injury or damage due to the weight of the device!
Injury and damage.
Be aware of the weight of the device during transport and storage.Risk of injury from escaping water under high pressure!
Injuries
Only disconnect the high-pressure hose from the high-pressure gun or the device if there is no pressure in the system.Finish operation, see Ending operation.
Remove the spray lance from the high-pressure gun.
Press the release button and pull off the high-pressure hose from the high-pressure gun.
Let the water drain from the high-pressure gun.
Store the high-pressure gun in the storage compartment for the high-pressure gun.
Store the spray lances in the spray lance holder:
Spray lance Vario Power: Nozzle upwards
Spray lance dirt grinder: Nozzle downwards
Pull the high-pressure hose backwards out of the high-pressure hose guide.
Hang the high-pressure hose on the hook for the high-pressure hose / mains cable.
Hang the mains cable on the hook for the high-pressure hose / mains cable.
Observe the additional notes before storing the device for a long period of time, see Care and service.
Risk of damage due to frost!
Material damage
Empty the water completely from the device and accessories.Always protect the device and accessories from frost.Pump the water out of the device, see Ending operation.
Dismantle the accessories and drain the water, see Storing the device.
Store the device accessories and keep them in a frost-proof room, see Storing the device
Risk of electric shock
Injuries due to touching live parts
Switch off the device.Remove the mains plug.The device is maintenance-free, so it is not necessary to carry out regular maintenance work.
Risk of damage due to missing or damaged sieve!
Damage to the high-pressure pump
Do not operate the device without a sieve.Do not clean the sieve with hard, pointed objects.Clean the sieve in the water connection if necessary.
Unscrew the coupling on the water connection.
Pull out the sieve.

Clean the sieve under running water.
Insert the sieve into the water connection.
Malfunctions often have simple causes that you can remedy yourself using the following overview. When in doubt, or in the case of malfunctions not mentioned here, please contact your authorized Customer Service.
Danger of death!
Fatal injuries due to electric shock when touching live parts.
Do not touch any live parts.Switch off the device.Pull the mains plug out of the mains socket.Device is not running
Cause:
The voltage supply is interrupted.
Remedy:
Check that the mains plug is plugged in.
Switch the device on.
Unlock and actuate the trigger.
The device starts up, otherwise:
Check if the voltage specified on the type plate matches the voltage of the power source.
Unplug the mains plug from the mains socket and inspect the mains cable and mains plug for damage.
A damaged power cord must be replaced promptly by an authorized Customer Service.
Cause:
The motor circuit breaker is active.
Remedy:
If the motor is overloaded, the motor circuit breaker switches the device off.
Switch off the device.
Allow the device to cool off for 1 hour.
Switch on the device and put it into operation.
If the fault occurs several times, have the device checked by Customer Service.
Device does not start, motor hums
Cause:
Voltage drop due to a weak mains grid or when using an extension cable.
Remedy:
Do not use an extension cable.
Before switching on the device, pull the trigger, then switch on the device.
The device does not reach required pressure
Cause:
The spray lance is in the "SOFT" position.
Remedy:
Turn the spray lance to the "HARD" position.
Cause:
The water supply is too low.
Remedy:
Open the water tap completely.
Lay the garden hose without kinks.
Check the water supply quantity and increase if necessary, see Technical data.
Make sure that the maximum suction height is not exceeded, see Technical data.
Cause:
The sieve is contaminated.
Remedy:
Clean the sieve, see Clean the sieve in the water connection.
Cause:
There is air in the device.
Remedy:
Ensure that the high-pressure hose and garden hose are installed correctly.
Vent the device, see Vent the device.
Strong pressure fluctuations
Cause:
The jet nozzle in the jet nozzle head is dirty.
Remedy:
Clean the jet nozzle from the front using a needle and flush it through.
Cause:
The water supply quantity is too low.
Remedy:
Open the water tap completely.
Lay the garden hose without kinks.
Clean the sieve in the water connection.
Check the water supply quantity and increase if necessary.
Detergent is not sucked in
Cause:
A spray lance is mounted on the high-pressure gun.
Remedy:
Detach the spray lance and operate using only the high-pressure gun.
Cause:
The Plug 'n' Clean detergent bottle is empty or not fitted correctly.
Remedy:
Check the filling level of the Plug 'n' Clean detergent bottle and replace the Plug 'n' Clean detergent bottle if necessary.
Ensure that the Plug 'n' Clean detergent bottle is correctly positioned in the intake on the device with the opening facing downwards.
Device leaking
Remedy:
A slight leakage in the device is due to technical reasons. In case of severe leakage, contact an authorized Customer Service center.
The warranty conditions issued by our relevant sales company apply in all countries. We shall remedy possible malfunctions on your appliance within the warranty period free of cost, provided that a material or manufacturing flaw is the cause. In a warranty case, please contact your dealer (with the purchase receipt) or the next authorised customer service site.
Further information can be found at: www.kaercher.com/dealersearch
Further warranty information (if available) can be found in the service area of your local Kärcher website under "Downloads".
Electrical connection | |
Voltage | 220 V |
Phase | 1 ~ |
Frequency | 60 Hz |
Connection output | 1,8 kW |
Protection class | IPX5 |
Protection class | I |
Power protection (slow-blowing) | 10 A |
Water connection | |
Feed pressure (max.) | 1,2 MPa |
Input temperature (max.) | 40 °C |
Input amount (min.) | 9 l/min |
Suction height (max.) | 0,5 m |
Device performance data | |
Operating pressure | 11 MPa |
Max. permissable pressure | 13 MPa |
Water flow rate | 6,3 l/min |
Maximum flow rate | 7,0 l/min |
Detergent flow rate | 0,3 l/min |
High-pressure gun recoil force | 13 N |
Dimensions and weights | |
Typical operating weight | 13,9 kg |
Length | 405 mm |
Width | 306 mm |
Height | 584 mm |

2-2-SC-A5-GS-17339