Kärcher K 3.540 Operator's Manual page 20

Symptom
No detergent.
Garden hose con-
nection leaks.
Spray wand leaks. Spray wand not properly at-
Pump is noisy.
Water leaks from
pump (up to 10
drops per minute is
permissible).
Oil Drip.
If you encounter any additional difficul-
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20
English
Cause
Detergent suction tube not
properly connected to the
machine.
Detergent is too thick.
Filter on detergent suction
tube is clogged.
Damaged or clogged deter-
gent suction tube.
Spray wand is in high pres-
sure position.
Discharge nozzle is obstruct-
ed.
Loose fittings.
Missing/worn rubber washer. Insert new washer.
tached.
Broken o-ring or plastic in-
sert.
Pump is sucking air.
Loose fittings.
Water seals are damaged or
worn.
Oil seals are damaged or
worn.
Solution
Check connection.
Dilute detergent, for best re-
sults use Kärcher
Run warm water through filter
to remove debris.
Remove obstruction or replace
detergent suction tube.
Turn spray wand tip to low
pressure position.
Blow out or remove debris with
fine needle.
Tighten fittings.
Insert the spray wand into the
trigger gun. Carefully press in
against the spring tension and
twist into the locked position.
Call Customer Support
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.
Check that all fittings are tight.
Call Customer Support
Call Customer Support
detergent.
®