Troubleshooting | Karcher K 3.97 M specification

TROUBLESHOOTING – continued

Symptom	Cause	Solution

No detergent.	Detergent suction tube not properly	Check connection.
	connected to the machine.

	Detergent is too thick.	Dilute detergent, for best results
		use Kärcher detergent.

	Filter on detergent suction tube is	Run warm water through filter to
	clogged.	remove debris.

	Damaged or clogged detergent	Remove obstruction or replace
	suction tube.	detergent suction tube.

	Quattro Nozzle is in high pressure	Turn Quattro Nozzle to low
	position.	pressure position.

	Discharge nozzle is obstructed.	Blow out or remove debris with
		fine needle.

	Detergent container is empty.	Add more detergent.

Garden hose	Loose fittings.	Tighten fittings.
connection leaks.
connection leaks.	Missing/worn rubber washer.	Insert new washer.
	Missing/worn rubber washer.	Insert new washer.

Spray wand or Spray	Quattro Nozzle not properly	Insert the Quattro Nozzle into the
wand extension leaks.	attached.	spray wand extension. Push in
		and turn clockwise to lock
		Quattro Nozzle in place.

	Spray wand extension not properly	Slide the spray wand extension
	attached.	into the trigger gun. Press in
		against the spring tension and
		twist into the lock position. Turn
		the spray wand extension collar
		clockwise until tight.

	Broken o-ring.	Call Kärcher customer service
		hotline and order an o-ring.

Pump is noisy.	Pump is sucking air.	Check that hoses and fittings are
		air tight. Turn off machine and
		purge pump by squeezing trigger
		gun until a steady flow of water
		emerges through the nozzle.

Water leaks from pump (up	Loose fittings.	Check that all fittings are tight.
to 10 drops per minute is
to 10 drops per minute is
permissible).	Water seals are damaged or worn.	Call service center.

Oil Drip.	Oil seals are damaged or worn.	Call service center.

If you encounter any additional difficulties not listed, please call our service center for help.

Karcher Customer Support USA

1-800-537-4129

K 3.97 M specifications

The Karcher K 3.97 M is a powerful, versatile pressure washer that stands out in the realm of outdoor cleaning equipment. This model is particularly designed for home use, ideal for tackling various cleaning tasks with ease. Its compact and lightweight design makes it easy to maneuver, while its robust build ensures durability and longevity.

One of the standout features of the K 3.97 M is its powerful 1600-watt motor, which delivers a maximum output pressure of 120 bar. This level of pressure is sufficient for a range of cleaning tasks, including washing cars, cleaning patios, and revitalizing fences and garden furniture. The adjustable pressure settings allow users to switch between high and low pressure, making it suitable for delicate surfaces like glass windows or more robust surfaces such as concrete driveways.

The K3.97 M comes equipped with Karcher’s unique Plug 'n' Clean system, enabling users to switch cleaning agents effortlessly. This integrated system allows for the quick attachment of different detergents, helping to eliminate tough grime and stains efficiently. Additionally, the unit features a built-in water filter that protects the pump from dirt particles, ensuring a longer lifespan of the device.

For convenience, the K 3.97 M is designed with an onboard storage system for accessories and hoses. The included 6-meter high-pressure hose provides ample reach, preventing the need for constant repositioning of the unit during use. The unit also features ergonomic carrying handles, allowing for easy transport from one job site to another.

Another highlight of the K 3.97 M is its versatility in terms of cleaning accessories. It typically includes a Vario Power Spray lance and a dirt blaster nozzle, both of which enhance the cleaning capabilities. The Vario lance allows users to adjust the pressure quickly, while the dirt blaster nozzle provides a concentrated spray for stubborn dirt.

In summary, Karcher K 3.97 M combines power, adaptability, and user-friendly features, making it an excellent choice for homeowners looking for an effective cleaning solution. Its innovative technologies, including adjustable pressure settings, Plug 'n' Clean detergent system, and thoughtful design elements, ensure it meets various outdoor cleaning demands effectively.