K 4 Classic
59802410 (10/23)
Safety instructions
Read this safety chapter and these original instructions before using the device for the first time. Act in accordance with them. Keep the original instructions for future reference or for future owners.
In addition to the notes 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 hazard-free operation.
Hazard levels
DANGER
Indication of an imminent threat of danger that will lead to severe injuries or even death.
WARNING
Indication of a potentially dangerous situation that may lead to severe injuries or even death.
CAUTION
Indication of a potentially dangerous situation that may lead to minor injuries.
ATTENTION
Indication of a potentially dangerous situation that may lead to damage to property.
Operation
DANGER
Operation in explosive atmospheres is prohibited.
DANGER
Never suction solvents, liquids containing solvents or undiluted acids. This includes e.g. petrol, paint thinner or heating oil. The spray mist is highly flammable, explosive and poisonous.
DANGER
Damaged wheels / tyre valves are extremely dangerous. Damaged wheels / tyre valves can be damaged by the high-pressure jet and explode. The first sign of this is discolouration of the tyres. Keep a spray distance of at least 30 cm when cleaning the wheels / tyre valves.
WARNING
Do not use the device if people without the proper protective clothing are in its reach.
WARNING
Do not aim the high-pressure jet at yourself, e.g. to clean clothes or shoes.
WARNING
Do not direct the high-pressure jet at persons, animals, live electrical equipment or at the device itself.
WARNING
Do not spray any objects which contain harmful substances (e.g. asbestos).
WARNING
Check the device and the accessories, such as the high-pressure hose, high-pressure gun and safety devices, to make sure they are in proper safe and reliable condition before each operation. Do not use the device if it is damaged. Replace damaged components immediately.
WARNING
Only use high-pressure hoses, control panels and couplings specified by the manufacturer.
WARNING
Risk of scalding. When disconnecting the supply or high-pressure hose, hot water can leak out of the connections after operation.
CAUTION
According to the applicable regulations, the appliance may never be used with the drinking water network without a system separator. Ensure that the connection to your house water system, with which the high-pressure cleaner is operated, is equipped with a system separator according to EN 12729 type BA.
CAUTION
Water that has flowed through a system separator is no longer classified as drinkable.
CAUTION
Never leave the device unsupervised while it is in operation.
CAUTION
Recoil force from the water stream emerging at the high-pressure nozzle acts on the high-pressure gun. Keep proper footing and hold the high-pressure gun and spray lance firmly.
CAUTION
Accidents or damage due to the device falling over. Before all actions with or on the device, you must make sure that it is stable.
ATTENTION
Do not operate the device at temperatures below 0 °C.
Protective gear
CAUTION
Wear suitable protective clothing and safety goggles to protect yourself from water or dirt backsplash.
CAUTION
Aerosols can be formed when using high-pressure cleaners. Inhaling aerosols can be harmful for your health. Depending on the application, the use of fully shielded nozzles (e.g. surface cleaners) can significantly lower the emission of aqueous aerosols. Depending on the environment to be cleaned, wear a suitable respiratory protective mask of class FFP 2 or comparable to protect yourself from inhaling aerosols if the use of a fully shielded nozzle is not possible.
Risk of electric shock
DANGER
Only connect protection class I devices to properly earthed power sources.
DANGER
Only connect the device to alternating current. The voltage indicated on the type plate must match the voltage of the power source.
DANGER
Only operate the device via a fault current protection switch (maximum 30 mA).
DANGER
Never touch the mains plug and socket with wet hands.
DANGER
The mains plug and coupling of the extension cable must be water tight and may not be placed in water. The coupling may not be on the floor. Use cable drums to ensure that the sockets are at least 60 mm above the floor.
DANGER
All live parts in the work area must be protected against water jets.
WARNING
Only connect the device to an electrical connection which has been set up by a qualified electrician as per IEC 60364‑1.
WARNING
Check that the mains connection cable with mains plug is undamaged each time before using the device. To avoid any possible danger, a damaged mains connection cable must be immediately replaced by the manufacturer, or the authorised customer service department or a qualified electrician.
WARNING
Do not damage the power supply and extension cable by running over it, crushing or yanking it or similar. Protect the power supply cable from heat, oil and sharp edges.
WARNING
Unsuitable electrical extension cables are dangerous. Only use approved and appropriately marked electrical extension cables with a sufficient line cross section when outdoors: 1‑10 m : 1.5 mm2, 10‑30 m : 2.5 mm2
CAUTION
Always fully unwind the extension cable from the cable drum.
CAUTION
In case of longer breaks in operation and after use, switch off the device at the main switch / device switch and pull the mains plug.
Operation with detergent
WARNING
Incorrect use of detergents can cause serious injuries or poisoning.
CAUTION
Keep the detergent out of the reach of children.
CAUTION
Only use the detergents supplied or specified by the manufacturer. The use of other detergents or chemicals can impair the safety of the device.
Care and service
WARNING
Always pull out the mains plug before all care and maintenance work.
CAUTION
Have repair work and work on electrical components carried out by the authorised customer service only.
ATTENTION
Do not use acetone, undiluted acids or solvents, as they corrode the materials used on the device.
Transportation
CAUTION
Risk of accidents and injuries. Take into account the weight of the device for transportation and storage. See chapter Technical data in the operating instructions.
General safety instructions
DANGER
Risk of asphyxiation. Keep packaging film out of the reach of children.
WARNING
Only use the device for its proper use. Take into account the local conditions and beware of third parties, in particular children, when working with the device.
WARNING
Persons with reduced physical, sensory or mental capabilities and persons lacking experience and knowledge may only use the appliance if they are properly supervised, have been instructed on use of the appliance safely by a person responsible for their safety, and understand the resultant hazards involved.
WARNING
Children must not operate the device.
WARNING
Children must be supervised to prevent them from playing with the appliance.
CAUTION
Safety devices are provided for your own protection. Never modify or bypass safety devices.
Environmental protection
The packing materials can be recycled. Please dispose of packaging in accordance with the environmental regulations.
Electrical and electronic devices 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 danger to human health and the environment. However, these components are required for the correct operation of the device. Devices marked by this symbol are not allowed to be disposed of together with the household rubbish.
Cleaning work producing in oily waste water, e.g. washing engines, washing undercarriages etc., may only be performed at washing stations with an oil separator.
Working with detergents may only be performed on watertight surfaces with connection to the waste water sewage system. Do not allow detergent to enter waterways or the soil.
Extraction of water from public waterways is not permitted in some countries.
Current information on content materials can be found at: www.kaercher.de/REACH
Intended use
Use the high-pressure cleaner in private households only.
The high-pressure cleaner is intended for cleaning machines, vehicles, buildings, tools, façades, terraces, garden machines etc. using a high-pressure water jet.
Accessories and spare parts
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.
Scope of delivery
The scope of delivery for the appliance is shown on the packaging. Check the contents for completeness when unpacking. If any accessories are missing or in the event of any shipping damage, please notify your dealer.
Device description
- Transport wheel
- Storage for high-pressure gun
- Storage for spray lance
- Storage for high-pressure hose / mains connection cable
- Spray lance dirt grinder for stubborn soiling
- Vario Power spray lance for common cleaning tasksThe working pressure can be continuously increased from "SOFT" to "HARD". To adjust the working pressure, release the trigger gun lever and turn the spray lance to the desired position. Detergent can be added to the water jet when the spray lance is turned all the way in the SOFT direction.
- High-pressure gun
- Clamp for connecting / disconnecting the high-pressure hose
- High-pressure gun lever
- High-pressure gun lock
- High-pressure hose
- Mains connection cable with mains plug
- Trigger "0/OFF" / "I/ON"
- Transport handle, extendable
- High-pressure connection
- Type plate
- Water connection with integrated sieve
- Detergent suction hose
- Coupling for the water connection
- *Garden hose (fabric reinforced, diameter at least 1/2 inch (13 mm), length at least 7.5 m, with commercially available quick coupling)
* additionally required
Safety devices
CAUTION
Missing or modified safety devices!
Safety devices are provided for your own protection.
Do not bypass, remove or render ineffective any safety devices.
Power switch
The power switch prevents unintentional operation of the device.
High-pressure gun lock
The lock locks the lever of the high-pressure gun and prevents the device from starting unintentionally.
Auto-stop function
If the lever of the high-pressure gun is released, the pressure switch turns off the pump and the high-pressure jet stops. The pump switches on again when the lever is pressed.
Symbols on the device
 | Do not aim the high-pressure jet may at persons, animals, live electrical equipment or the device itself. Protect the device against frost. |
 | The device may not be connected to the public drinking water network. |
Mounting
Fit the supplied loose parts onto the device before starting up the device.
Installing the wheels
Install the wheels on the device so that they latch into place.
Installing the water connection coupling
Screw the water connection coupling onto the water connection on the device.
Initial startup
Place the device on a flat and level surface.
Unwind the high-pressure hose and eliminate any loops and twists.
Connect the high-pressure hose to the device.
Pull up the clamp on the coupling.
Insert the high-pressure hose into the coupling.
Press down the clamp on the coupling.
Connect the high-pressure hose to the high-pressure gun.
Squeeze the clamp.
Pull out the clamp.
Insert the high-pressure hose.
Press the clamp in until it latches into place.
Check for a secure connection by pulling on the high-pressure hose.
Plug the mains plug into a mains socket.
Water supply
For the connection values, see the type plate or chapter Technical data.
Observe the water distribution company regulations.
ATTENTION
Damage through contaminated water
Contamination in the water can damage the pump and the accessories.
KÄRCHER recommends using the KÄRCHER water filter for protection(special accessory, order number 4.730-059).
Connection to the water line
ATTENTION
Hose coupling with Aquastop on the water connection of the device
Damage to the pump
Never use a hose coupling with Aquastop on the water connection of the device.
You can use an Aquastop coupling on the tap.
Plug the garden hose onto the water connection coupling.
Connect the garden hose to the water line.
Open the water tap fully.
Sucking water from open containers
When used with the KÄRCHER suction hose with check valve (special accessory, order number 2.643-100) this high-pressure cleaner is suitable for sucking up surface water, e.g. from rain barrels or ponds (for the maximum suction height see chapter Technical data).
The water connection coupling is not required for vacuuming operation.
Fill the suction hose with water.
Screw the suction hose onto the device water connection and hang it in a water source (e.g. water butt).
Vent the device
Switch the device on "I/ON".
Unlock the lever of the high-pressure gun.
Press the lever of the high-pressure gun.
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 lever of the high-pressure gun.
Lock the lever of the high-pressure gun.
Operation
ATTENTION
Dry running of pump
Damage to the device
If the device does not build up any pressure within 2 minutes, switch off the device and proceed according to the instructions in chapterTroubleshooting guide.
High-pressure operation
ATTENTION
Damage to painted or sensitive surfaces
Surfaces can be damaged when the jet is too close to the surface or an unsuitable spray lance is used.
Maintain a minimum spray distance of 30 cm when cleaning painted surfaces.
Do not clean car tyres, paint or sensitive surfaces such as wood with the dirt blaster.
Insert a spray lance into the high-pressure gun and lock it by turning it 90°.
Switch the device on ("I/ON").
Unlock the lever of the high-pressure gun.
Press the lever of the high-pressure gun.
The device switches on.
Operation with detergent
DANGER
Failure to adhere to the safety data sheet
Incorrect handling of the detergent can seriously damage your health
Observe the safety data sheet of the detergent manufacturer, in particular the instructions on personal protective equipment.
Note
KÄRCHER detergents ensure fault-free operation. Ask us for a consultation, request our catalog or our detergent information sheets.
Note
Detergent can only be mixed into the jet at low pressure.
Pull the suction hose for the detergent out of the casing to the desired length.
Hang the detergent suction hose in a container with detergent solution.
Use the Vario Power spray lance.
Turn the spray lance all the way into the "SOFT" position.
The detergent solution is mixed with the water jet during operation.
Recommended cleaning method
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.
After operation with detergent
Flush the device with clear water for approx. 30 seconds.
Interrupting operation
Release the lever of the high-pressure gun.
The device switches off when the lever is released. The high pressure in the system is retained.
Lock the lever of the high-pressure gun.
Switch the device off "0/OFF" during work breaks longer than 5 minutes.
Ending operation
CAUTION
Pressure in the system
Injuries from high-pressure water escaping uncontrollably
Only disconnect the high-pressure hose from the high-pressure gun or the device when the system is fully depressurised.
Release the lever of the high-pressure gun.
Close the water tap.
Press the lever of the high-pressure gun for 30 seconds.
The pressure still remaining in the system is released.
Release the lever of the high-pressure gun.
Lock the lever of the high-pressure gun.
Disconnect the device from the water supply.
Switch off the device "0/OFF".
Pull the mains plug out of the outlet.
Transport
CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during transportation.
Pulling device
Pull out the transport handle until it audibly engages.
Pull the device by the transport handle.
Transporting the device in a vehicle
Secure the device against slipping and tipping over.
Storage
CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during storage.
Storing the device
Place the device on a level surface.
Disonnect the high-pressure hose from the high-pressure gun.
Disconnect the spray lance from the high-pressure gun.
Stow both spray lances and the high-pressure gun in the appropriate storage options.
Disconnect the high-pressure hose from the device.
Store the high-pressure hose on the device.
Stow the mains connection cable on the device.
Observe the additional notes before storing the device for a longer period of time, see chapter Care and service.
Frost protection
ATTENTION
Danger of frost
Incompletely emptied devices can be destroyed by frost.
Completely empty the device and accessories.
Protect the device from frost.
The following requirements must be satisfied:
The device is disconnected from the water supply.
The high-pressure hose is removed.
Switch the device on "I/ON".
Wait for a maximum of 1 minute until no more water escapes from the high-pressure connection.
Switch off the device.
Store the device in a frost-protected room, together with all accessories.
Care and service
DANGER
Danger of electric shock
Injuries due to touching live parts
Switch off the device.
Remove the mains plug.
The device is maintenance-free, i.e. you do not need to perform any maintenance work.
Clean the sieve in the water connection
ATTENTION
Damaged sieve in the water connection
Damage to the device through contaminated water
Check the sieve for damage before inserting it in the water connection.
If necessary, clean the sieve in the water connection.
Remove the coupling from the water connection.
Pull out the sieve with a pair of flat pliers.
Clean the sieve under running water.
Insert the sieve into the water connection.
Screw the coupling onto the water connection.
Cleaning the detergent filter
Clean the detergent filter before prolonged storage.
Remove the filter from the detergent suction hose.
Clean the filter under running water.
Troubleshooting guide
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 authorised Customer Service.
DANGER
Danger of electric shock
Injuries due to touching live parts
Switch off the device.
Remove the mains plug.
Device not running
Remedy:
Press the lever of the high-pressure gun.
The device switches on.
Check that the voltage specified on the type plate corresponds to the voltage of the power source.
Check the mains connection cable for damage.
Device does not reach required pressure
Cause:
The water supply is too low.
Remedy:
Open the water tap fully.
Check the water inlet for an adequate flow rate.
Check the setting at the spray lance.
Check that the maximum suction height is not exceeded.
Cause:
The sieve in the water connection is dirty.
Remedy:
Pull the sieve in the water connection out using flat pliers.
Clean the sieve under running water.
Cause:
Air is in the device.
Remedy:
Vent the device:
Switch on the device without a connected spray lance for a maximum of 2 minutes.
Press the high-pressure gun and wait until the water escaping from the high-pressure gun is free of air bubbles.
Connect the spray lance.
Strong pressure fluctuations
Remedy:
Cleaning the high-pressure nozzle:
Remove contamination from the nozzle drill with a needle.
Rinse the high-pressure nozzle with water from the front.
Check the water supply volume.
Device leaking
Remedy:
The device leaks a small amount for technical reasons. If the leak is severe, request authorised Customer Service.
Detergent is not sucked in
Remedy:
Use the Vario Power spray lance and turn it all the way in the "SOFT" direction.
Clean the filter on the detergent suction hose.
Check the detergent suction hose for kinks.
Warranty
The warranty conditions issued by our sales company responsible apply in all countries. We shall remedy possible malfunctions on your device within the warranty period free of cost, provided that a material or manufacturing defect is the cause. In a warranty case, please contact your dealer (with the purchase receipt) or the next authorised customer service site.
You can find more detailed information at: www.kaercher.com/dealersearch
Technical data
Electrical connection | |
Voltage | 220-240 V |
Phase | 1 ~ |
Frequency | 50-60 Hz |
Power rating | 1,8 kW |
Degree of protection | IPX5 |
Protection class | II  |
Power protection (slow-blowing) | 13 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. permissible pressure | 13 MPa |
Water flow rate | 5,2 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 | 5,4 kg |
Length | 264 mm |
Width | 256 mm |
Height | 450 mm |
Determined values in acc. with EN 60335-2-79 | |
Hand-arm vibration value | <2,5 m/s2 |
Uncertainty K | 0,7 m/s2 |
Sound pressure level LpA | 77 dB(A) |
Uncertainty KpA | 3 dB(A) |
Sound power level LWA + uncertainty KWA | 92 dB(A) |
Declaration of Conformity
We hereby declare that the product described below complies with the relevant provisions of the following UK Regulations, both in its basic design and construction as well as in the version put into circulation by us. This declaration shall cease to be valid if the product is modified without our prior approval.
Product: High-pressure cleaner
Type: 1.679-xxx
Currently applicable UK RegulationsS.I. 2001/1701 (as amended)
S.I. 2008/1597 (as amended)
S.I. 2012/3032 (as amended)
S.I. 2016/1091 (as amended)
Designated standards usedEN 60335-1
EN 60335-2-79
EN 62233: 2008
EN 55014-1: 2017
EN 55014-2: 2015
EN 61000-3-2: 2014
EN 61000-3-3: 2013
EN IEC 63000: 2018
Applied conformity assessment procedureS.I. 2001/1701 (as amended): Schedule 8
Sound power level dB(A)Measured: 89
Guaranteed: 92
The signatories act on behalf of and with the authority of the company management.
Documentation supervisor:
S. Reiser
Alfred Kärcher SE & Co. KG
Alfred-Kärcher-Str. 28 - 40
71364 Winnenden (Germany)
Ph.: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2021/02/01
EU Declaration of Conformity
We hereby declare that the machine described below complies with the relevant basic safety and health requirements in the EU Directives, both in its basic design and construction as well as in the version placed in circulation by us. This declaration is invalidated by any changes made to the machine that are not approved by us.
Product: High-pressure cleaner
Type: 1.679-xxx
Currently applicable EU Directives2000/14/EC
2006/42/EC (+2009/127/EC)
2011/65/EU
2014/30/EU
Harmonised standards usedEN 60335-1
EN 60335-2-79
EN 62233: 2008
EN 55014-1: 2017
EN 55014-2: 2015
EN 61000-3-2: 2014
EN 61000-3-3: 2013
EN IEC 63000: 2018
Applied conformity evaluation method2000/14/EG: Annex V
Sound power level dB(A)Measured: 89
Guaranteed: 92
The signatories act on behalf of and with the authority of the company management.
Documentation supervisor:
S. Reiser
Alfred Kärcher SE & Co. KG
Alfred-Kärcher-Str. 28 - 40
71364 Winnenden (Germany)
Ph.: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2021/02/01
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