Kärcher K 3.99M Operator's Manual page 16

Symptom
No detergent.
Garden hose con-
nection leaks.
Spray wand leaks.
Pump is noisy.
Water leaks from
pump (up to 10
drops per minute is
permissible).
Oil Drip.
If you encounter any additional difficul-
ties not listed, please call
1-800-537-4129 for help or visit our
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16
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 obstruc-
ted.
Loose fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand not properly at-
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.
Kärcher Customer Support USA
Solution
Check connection.
Dilute detergent, for best re-
sults use Kärcher detergent.
Run warm water through fil-
ter 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 lok-
ked position.
Call Customer Support
Check that hoses and fittings
are air tight. Turn off machi-
ne and purge pump by
squeezing trigger gun until a
steady flow of water emer-
ges through the nozzle.
Check that all fittings are
tight.
Call Customer Support
Call Customer Support