Karcher K 3.99M - Manual (Page 16)

16
English
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
No detergent. Detergent suction tube not
properly connected to the
machine. Check connection.
Detergent is too thick. Dilute detergent, for best re-
sults use Kärcher detergent.
Filter on detergent suction
tube is clogged. Run warm water through fil-
ter to remove debris.
Damaged or clogged deter-
gent suction tube. Remove obstruction or re-
place detergent suction tube.
Spray wand is in high pres-
sure position. Turn spray wand tip to low
pressure position.
Discharge nozzle is obstruc-
ted. Blow out or remove debris
with fine needle.
Garden hose con-
nection leaks. Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand leaks. Spray wand not properly at-
tached. Insert the spray wand into
the trigger gun. Carefully
press in against the spring
tension and twist into the lok-
ked position.
Broken o-ring or plastic in-
sert. Call Customer Support
Pump is noisy. Pump is sucking air. 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.
Water leaks from
pump (up to 10
drops per minute is
permissible). Loose fittings. Check that all fittings are
tight.
Water seals are damaged or
worn. Call Customer Support
Oil Drip. Oil seals are damaged or
worn. Call Customer Support
Symptom Cause Solution
Kärcher Customer Support USA