Kärcher K 370 M User Manual

Kärcher K 370 M

24 pages

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High Pressure Washer Operator Manual

Overview ................................................................................... 2

Precautions ............................................................................ 2-4

Assembly Instructions .............................................................. 4

Operating Instructions.............................................................. 5

Using the Accessories.............................................................. 6

Working with Detergents .......................................................... 7

Shut Down and Clean-Up ........................................................ 8

Taking a Break .......................................................................... 8

Winterizing and Long-Term Storage ........................................ 8

Cleaning Tips .......................................................................9-10

Optional Cleaning Accessories .............................................. 10

Troubleshooting .................................................................11-12

Specifications

Max. Pressure 1400 PSI

Max. Water volume 1.7 GPM

Voltage 120 V

Amp draw 13 AMPS

5.959-958 / 05.01

Please keep the original box, packaging and receipt.

Before operating this unit, please read this manual

thoroughly and retain it for future reference.

Model K 370 M

French .......................... 13

Questions and Answers:

K
Kendra HeathAug 15, 2025
Why won't my Kärcher K 370 M motor start?
- E
  Erin HarrisonAug 15, 2025
  Several factors can prevent your Kärcher Pressure Washer's motor from starting. Ensure the On/Off switch is in the “ON” (I) position and that the power cord is properly plugged in. If you're using an extension cord, make sure it's not too long or damaged; use a 25 ft. 12/2 gauge cord or a 50 ft. 10/2 gauge cord. Try a different electrical outlet to rule out power supply issues. Finally, check if the circuit breaker has tripped and reset it if necessary.
M
Mr. John SmithAug 18, 2025
What to do if my Kärcher Pressure Washer has low pressure?
- J
  Jesse GreenAug 18, 2025
  If your Kärcher Pressure Washer isn't reaching high pressure, the issue could stem from several causes. First, ensure you're using a 3/4 inch garden hose. Check the hose for any kinks, leaks, or blockages that might be restricting water supply. Make sure the water source is fully open. Also, inspect the water inlet filter for clogs and rinse it out in warm water if needed. Finally, verify that the spray wand is set to the high-pressure position.
A
Abigail LunaAug 21, 2025
What to do if my Kärcher K 370 M Pressure Washer output pressure varies?
- K
  Kimberly CraigAug 22, 2025
  If the output pressure of your Kärcher Pressure Washer fluctuates, here's what to check: Ensure the water supply is fully open and inspect the garden hose for kinks, leaks, or blockages. Verify that all hoses and fittings are airtight to prevent the pump from sucking air; if it is, turn off the machine and purge the pump by squeezing the trigger gun until a steady water flow emerges from the nozzle. Also, check the water inlet filter for clogs and clean it in warm water. Clear any obstructions from the discharge nozzle using a fine needle. If the gun, hose, or spray wand is calcified, run distilled vinegar through the detergent suction tube.
D
David OwensAug 25, 2025
Why is there no detergent coming out of my Kärcher K 370 M Pressure Washer?
- M
  Mrs. Kendra MartinAug 26, 2025
  If your Kärcher Pressure Washer isn't dispensing detergent, start by checking that the detergent suction tube is properly connected. If the detergent is too thick, dilute it. Inspect the filter on the detergent suction tube for clogs and rinse it with warm water to remove any debris. If the detergent suction tube is damaged or clogged, clear the obstruction or replace the tube. Ensure the spray wand is in the low-pressure position. Lastly, check the discharge nozzle for obstructions and clear them with a fine needle.
A
Adam HendersonAug 28, 2025
How to fix a leaking garden hose connection on my Kärcher K 370 M?
- D
  Darryl SuarezAug 28, 2025
  If your garden hose connection is leaking on your Kärcher Pressure Washer, first tighten the fittings. If the leak persists, inspect the rubber washer for wear or if it's missing, and insert a new washer.
R
Ryan FranklinAug 31, 2025
Why is my Kärcher K 370 M Pressure Washer pump so noisy?
- J
  jacksonjacobAug 31, 2025
  A noisy pump in your Kärcher Pressure Washer often indicates that the pump is sucking air. To resolve this, check that all hoses and fittings are airtight. Then, turn off the machine and purge the pump by squeezing the trigger gun until a steady flow of water emerges through the nozzle.
W
William WilsonSep 3, 2025
What to do if my Kärcher K 370 M Pressure Washer spray wand is leaking?
- T
  Thomas RodriguezSep 4, 2025
  If your Kärcher Pressure Washer's spray wand or extension is leaking, ensure the spray wand is correctly inserted into the spray wand extension, pressing against the spring tension and twisting it into the locked position. Also, check that the spray wand extension is properly attached by sliding it into the gun and turning the wand collar clockwise until tight. If the o-ring or plastic insert is broken, you will need to contact a service center to order a repair kit.
R
Robert ColeSep 7, 2025
What does it mean if my Kärcher Pressure Washer pump is leaking water?
- P
  Paul QuinnSep 7, 2025
  It's permissible for your Kärcher Pressure Washer to leak up to 10 drops of water per minute from the pump. If the leakage is more than that, ensure that all fittings are tight. If the leak persists, it may indicate that the water seals are damaged or worn, in which case you should contact a service center.

Kärcher K 370 M Specifications

General

Max Pressure	120 bar
Pressure	20-120 bar
Cable Length	5 m
Max. Water Inlet Temperature	40°C
Voltage	230 V
Frequency	50 Hz
Detergent Tank Capacity	0.5 L
Power	1600 W

Summary

Overview and Safety

Machine Components

Identifies the parts included with the pressure washer.

Essential Safety Warnings

Lists critical 'NEVER!' warnings for safe operation.

Important Precautions

General Safety Warnings

Comprehensive safety advice for product use, including personal protection.

Extension Cords Usage

Guidelines for selecting and using extension cords safely with the unit.

Double Insulated Design

Explanation of the product's double insulation safety feature.

Operational Cautions

Specific cautions regarding product operation and maintenance.

Assembly and Water Supply

Assembly Instructions

Step-by-step guide for assembling the pressure washer unit.

Water Supply Requirements

Details on water source quality, flow rate, and temperature.

Operating Instructions

Step-by-Step Operation

Detailed steps for connecting, starting, and running the pressure washer.

Using Accessories and Detergents

High/Low Pressure Nozzle

Explains the function and adjustment of the dual-mode spray nozzle.

Working with Detergents

Guide on applying detergents using the suction tube and low pressure.

Shutting Down and Storage

Shut Down and Clean-Up

Procedures for safely stopping and cleaning the unit after use.

Taking a Break

Steps for pausing operation temporarily.

Winterizing and Long-Term Storage

Instructions for protecting the unit during non-use periods.

Cleaning Tips and Options

Deck and Siding Cleaning

Methods for cleaning decks and house siding with the pressure washer.

Masonry and Vehicle Cleaning

Tips for cleaning patios, brick, stone, cars, boats, and motorcycles.

Outdoor Equipment Cleaning

How to clean grills, power equipment, and gardening tools.

Patio Furniture and Recommendations

Cleaning outdoor furniture and general advice before starting.

Optional Cleaning Accessories

List of optional accessories for enhanced cleaning capabilities.

Troubleshooting

Motor Start and Pressure Issues

Solutions for motor start failures and low or fluctuating pressure.

Detergent and Leak Issues

Troubleshooting detergent supply problems and leaks in hoses or wands.

Pump Noise and Drips

Diagnosis for noisy pumps or minor water leaks from the unit.

Warranty Information

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