Karcher K 3.91 M - Manual (Page 17)

English
17
Call: 1-800-537-4129 for help or visit
our website:
www.karcher-usa.com/home Call: 1-800-465-4980 for help or visit
our website:
www.karcher-canada.com
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 filter
to remove debris.
Damaged or clogged deter-
gent suction tube. Remove obstruction or replace
detergent suction tube.
Spray wand is in high pres-
sure position. Turn spray wand tip to low
pressure position.
Discharge nozzle is obstruct-
ed. 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 locked 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 machine
and purge pump by squeezing
trigger gun until a steady flow
of water emerges 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 Kärcher Customer Service CDN