Karcher K 3.740 manuel dutilisation Symptom Cause Solution, USA / Canada México

Symptom	Cause	Solution
No detergent.	Detergent suction tube not	Check connection.
	properly connected to the
	machine.
	Detergent is too thick.	Dilute detergent, for best re-
		sults use Kärcher® detergent.
	Filter on detergent suction	Run warm water through filter
	tube is clogged.	to remove debris.
	Damaged or clogged deter-	Remove obstruction or replace
	gent suction tube.	detergent suction tube.
	Spray wand is in high pres-	Turn spray wand tip to low
	sure position.	pressure position.
	Discharge nozzle is obstruct-	Blow out or remove debris with
	ed.	fine needle.
Garden hose con-	Loose fittings.	Tighten fittings.
nection leaks.
	Missing/worn rubber washer.	Insert new washer.
Spray wand leaks.	Spray wand not properly at-	Insert the spray wand into the
	tached.	trigger gun. Carefully press in
		against the spring tension and
		twist into the locked position.
	Broken o-ring or plastic in-	Call Customer Support
	sert.
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	Loose fittings.	Check that all fittings are tight.
pump (up to 10
	Water seals are damaged or	Call Customer Support
drops per minute	worn.
is permissible).
Oil Drip.	Oil seals are damaged or	Call Customer Support
	worn.

If you encounter any additional difficul- ties not listed, please visit our website.

USA / Canada:

www.karcher-help.com

México:

www.karcher.com.mx

20English