Kärcher K 3.98 M Operator's Manual page 17

Symptom
No detergent.
Garden hose connec-
tion leaks.
Spray wand leaks.
Pump is noisy.
Water leaks from
pump (up to 10 drops
per minute is permis-
sible).
Oil Drip.
If you encounter any additional difficul-
ties not listed, please call
1-800-537-4129 for help or visit our
website: www.karcher-usa.com/home
Cause
Detergent suction tube not
properly connected to the ma-
chine.
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.
Spray wand not properly at-
tached.
Broken o-ring or plastic insert.Call Customer Support
Pump is sucking air.
Loose fittings.
Water seals are damaged or
worn.
Oil seals are damaged or
worn.
Kärcher Customer Support USA
Solution
Check connection.
Dilute detergent, for best re-
sults use Kärcher detergent.
Run warm water through filter
to remove debris.
Remove obstruction or re-
place 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 lokked position.
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
17
English