Kärcher Home & Garden Online Help
Welcome to the official online help resource for Kärcher Home & Garden products sold in the USA. Below are several channels of support including how to buy spare parts, locate a service center in your area, register your product online or contact our customer care team online. You also can find answers to many common issues by typing your question below or clicking the Knowledgebase link. We greatly appreciate your business and look forward to helping you make the most of your Kärcher product!
What are definitions/glossary of popular pressure washer terms?
Adjustable Spray Wand|
Select models are equipped with an adjustable spray wand that you can adjust the spray angle by turning the tip.
Automatic Cool Down System (Thermal Relief)
Cycles water through pump when water reaches 140° - 145° F. Warm water will discharge from pump onto ground. This system prevents internal pump damage.
Axial Cam (Swash Plate)
A device (cam) used to transform the rotary motion of the motor/ engine into the reciprocating
motion of a pump's pistons.
Cleaning Units = (PSIxGPM)
This calculation formula helps demonstrate that PSI alone does not make a pressure washer effective - GPM is critical as well. The higher the number, the better the cleaning
A surface acting cleansing agent that differs from soap but can also emulsify oils and hold dirt in suspension.
Detergent Injection System
Cleaning solutions are drawn into water stream to make cleaning more effective by allowing
solutions to saturate the soiled surface.
Volume of water sprayed; measured in GPM
Units of measure for water flow; (Gallons Per Minute)
Connection for high-pressure hose.
Same as horsepower, a unit of measure for work
Connection for garden hose
Wand shaft and/or spray tip nozzle assembly
Same as 'overhead valve', an improved way to control exhaust and intake valves on internal combustion engines.
An industrial, more durable version of the OHV engine.
units of pressure; (Pounds per Square Inch)
Pressure and Flow Regulator
Adjusting the pressure and flow of the unit at the pump by turning an adjustment knob. Allows greater flexibility when cleaning.
A method of eliminating air from a pressure washer so that starting the engine is easier
Same as “pressure washer”
Pressure Washer Manufacturers Association
Same as revolutions per minute. The amount of revolutions (turns) an engine makes in one minute
A type of internal combustion engine that uses a conventional "L" type cylinder head with the exhaust and intake valves on the side of the engine.
Controls the application of water onto the cleaning surface with a trigger.
Two types. (Variable Spray Nozzle) Can twist and adjust from 0-45 and offer a great deal of flexibility for a variety of jobs. (Quick Connect Spray Tips) feature a pre-set spray pattern (0, 15,25,40, and a Detergent Applicator Nozzle). These tips are interchangeable and make it easy to maintain a desired spray pattern.
Thermal Relief Valve
A special safety valve that monitors the temperature of the water inside the pump and discharges hot water before it can damage the pump seals and valves.
A device used to increase the effectiveness of high-pressure water, by spinning a narrow stream of water in a circle at a high speed.
A device used to relive the water pressure within the pump whenever spray flow is blocked.