Kärcher K 3 User Manual

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K 3

OPERATOR MANUAL

High-Pressure Washer . . . . . . . . . 2

MANUEL D’UTILISATION

Nettoyeur haute pression . . . . . 17

MANUAL DE USUARIO

Limpiador de alta presión . . . . . 34

59669400 (2015.12)

Table of Contents

Other manuals for Kärcher K 3

How To Connect4 pages

Questions and Answers:

M
Matthew HolmesAug 14, 2025
How to troubleshoot a Kärcher K 3 Pressure Washer motor that will not start?
- S
  Samantha GregoryAug 15, 2025
  If your Kärcher Pressure Washer motor won't start, first ensure the On/Off switch is in the “ON” (I) position. Check that the power cord is properly plugged into a functioning electrical outlet. If it still doesn't start, try a different outlet to rule out power supply issues. Also, verify that the GFCI plug hasn't tripped and press the “RESET” button if needed. Finally, if the circuit breaker has tripped, switch off the pressure washer and allow it to cool down for an automatic reset.
T
Taylor WhiteAug 18, 2025
Why does my Kärcher K 3's output pressure vary from high to low?
- C
  colton96Aug 18, 2025
  If your Kärcher Pressure Washer's output pressure varies, ensure the water supply is turned on full force and check the garden hose for any kinks, leaks, or blockages. Also, the pump might be sucking air; inspect hoses and fittings to ensure they are airtight. Turn off the machine, then purge the pump by squeezing the trigger gun until a steady flow of water emerges through the nozzle. Clean the water inlet filter by removing it and rinsing it in warm water. If the discharge nozzle is obstructed, clear it using a fine needle. For a calcified gun, hose, or spray wand, run distilled vinegar through the detergent suction tube.
S
Stanley MarshallAug 21, 2025
Why is my Kärcher K 3 Pressure Washer not reaching high pressure?
- L
  Lauren EdwardsAug 21, 2025
  If your Kärcher Pressure Washer isn't reaching high pressure, make sure you are using a garden hose with a diameter of 16 mm (5/8 inch) or larger. Inspect the garden hose for any kinks, leaks, or blockages that may be restricting the water supply. Ensure the water source is fully open to provide an adequate inlet water supply. Clean the water inlet filter by removing it and rinsing it in warm water. Also, check that the spray wand is set to the high-pressure position.
M
michaellucasAug 25, 2025
What to do if my Kärcher K 3 is not dispensing detergent?
- J
  Jean KingAug 25, 2025
  If your Kärcher Pressure Washer is not dispensing detergent, check that the detergent siphon tube is properly connected to the machine. If the detergent is too thick, dilute it, or use Kärcher detergent for best results. Clean the filter on the detergent siphon tube by running warm water through it to remove any debris. If the detergent siphon tube is damaged or clogged, remove the obstruction or replace the tube. Ensure the spray wand is in the low-pressure position. Also, make sure the discharge nozzle is not obstructed; if it is, blow out or remove debris with a fine needle.
D
dyoungAug 28, 2025
Why is the pump on my Kärcher K 3 Pressure Washer so noisy?
- J
  Jessica FarmerAug 28, 2025
  If your Kärcher Pressure Washer pump is noisy, it might be sucking in air. Check that all hoses and fittings are airtight. Turn off the machine and purge the pump by squeezing the trigger gun until a steady flow of water emerges through the nozzle.
C
Catherine ColemanAug 31, 2025
How to fix a garden hose connection leak on my Kärcher K 3 Pressure Washer?
- M
  Michelle FrancisSep 1, 2025
  If the garden hose connection on your Kärcher Pressure Washer is leaking, first tighten all the fittings to ensure they are secure. If the leak persists, check for a missing or worn rubber washer and insert a new one.
R
Rachel McdowellSep 3, 2025
Why is the spray wand on my Kärcher Pressure Washer leaking?
- R
  Ryan WilsonSep 3, 2025
  If your Kärcher Pressure Washer spray wand is leaking, ensure the spray wand is properly attached by inserting it into the trigger gun, pressing against the spring tension, and twisting it into the locked position. If the issue continues, call Customer Support.
J
John MccoySep 7, 2025
Why is my Kärcher K 3 Pressure Washer leaking water from the pump?
- T
  Theresa GarzaSep 7, 2025
  If water is leaking from the pump of your Kärcher Pressure Washer (up to 10 drops per minute is permissible), ensure that all fittings are tight. If the leak persists, call Customer Support.

Kärcher K 3 Specifications

General

Form factor	Upright
Hose length	6 m
Power source	Electric
Maximum flow rate	380 l/h
Working pressure (max)	120 bar
Working pressure (min)	20 bar
Maximum input water temperature	40 °C
AC input voltage	220-240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	1600 W
Surface cleaner	-

Weight and Dimensions

Depth	275 mm
Width	279 mm
Height	803 mm
Weight	5800 g

Summary

Owner/User Responsibility

Safety Alert Symbols

DANGER

Defines an imminent hazardous situation resulting in death or serious injury.

WARNING

Defines a potentially hazardous situation resulting in death or injury.

Important Safety Instructions

General Precautions

General safety precautions for operating the pressure washer, including supervision and alertness.

Risk of Injection or Injury

Warnings about high-pressure jets being dangerous if misused and directed at persons or animals.

Risk Of Explosion

Warning against spraying flammable liquids like acids, solvents, or gasoline.

Risk of Electrocution

Instructions on avoiding electrical hazards, including cord inspection and grounding.

Detergent Usage Caution

Gun Kickback and Safety Lock

Warning about gun kickback and the function of the safety lock.

Electrical and Chemical Hazards

Warnings against spraying electrical apparatus, using flammable liquids, and injection hazards.

Grounding Instructions

Improper Grounding Danger

Highlights the danger of electrocution from improper grounding of the equipment.

Ground Fault Circuit Interrupter Protection

Water Supply

Water Supply Requirements

Water Contamination Warning

Warning against using water contaminated with solvents like paint thinners or gasoline.

Assembly Instructions

Step 1: Wheels Assembly

Step 2: Handle Assembly

Step 3: Detergent Tank Attachment

Step 4: Quick Connect Outlet

Step 5: Water Inlet Connection

Step 6: High-Pressure Hose Connection

Operating Instructions

Step 1: High-Pressure Hose Connection

Step 2: Spray Wand Insertion

Step 3: Garden Hose Connection

Step 4: Water Inlet Connection

Step 5: Water Source Connection

Step 6: GFCI Testing

Instructions for plugging in the GFCI and testing its functionality.

Step 7: Triggering the Gun

Step 8: Starting the Washer

Using the Accessories

General Safety for Accessories

Safety warnings regarding pointing the spray nozzle and testing inconspicuous areas.

Vario Power Spray Wand

Working with Detergents

Detergent Usage Prohibitions

Warning against using bleach, solvents, ammonia, or acid-based products, which void warranty.

Shutting Down and Clean-Up

Step 1: Turn Off and Unplug

Step 2: Turn Off Water Source

Step 3: Release Pressure

Step 4: Engage Safety Lock

Step 5: Disconnect Garden Hose

Step 6: Disconnect High-Pressure Hose

Winterizing and Long-Term Storage

Storage Preparation Steps

Storage Location and Precautions

Care and Maintenance Instructions

Cleaning the Water Inlet Filter

Step-by-step guide on how to remove, rinse, and reinsert the water inlet filter.

Troubleshooting

Motor Will Not Start

Troubleshooting steps for issues where the motor fails to start, including switch and power checks.

Unit Does Not Reach High-Pressure

Solutions for low pressure issues, such as hose diameter, water supply, and clogged filter.

Output Pressure Varies High and Low

Troubleshooting for inconsistent pressure, including air in the pump and nozzle obstructions.

No Detergent

Troubleshooting steps for when no detergent is being drawn, checking connections and filter.

Garden Hose Connection Leaks

Spray Wand Leaks

Pump is Noisy

Steps to address pump noise, typically related to air in the system or fittings.

Water Leaks from Pump

Guidance for water leaks from the pump, indicating potential issues with fittings or seals.

Oil Drip

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