Karcher K120 M - Manual (Page 12)

11
If you encounter any additional
difficulties not listed, please call
our service center for help.
Karcher Customer Support USA
1-800-537-4129
TROUBLESHOOTING – continued
Symptom Cause Solution
No detergent.
Garden hose
connection leaks.
Pump is noisy.
Water leaks from
pump (up to 10
drops per minute
is permissible).
Oil Drip.
Detergent is too thick. Dilute detergent, for best results use
Kärcher detergent.
Filter on detergent suction
tube is clogged. Run warm water through filter to
remove debris.
Damaged or clogged
detergent suction tube. Remove obstruction or replace
detergent suction tube.
Soap nozzle not installed Attach soap nozzle to spray wand
extension.
Discharge nozzle is
obstructed. Blow out or remove debris with fine
needle.
Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand extension not
properly attached.
Broken o-ring or plastic
insert.
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.
Loose fittings. Check that all fittings are tight.
Call service center. Water seals are damaged
or worn.
Call Kärcher customer service
hotline and order repair kit
(part no. 2.883-111.0).
Pump is sucking air.
Oil seals are damaged or
worn. Call service center.
Spray wand or
Spray wand
extension leaks. Spray wand not properly
attached. Insert the spray wand into the spray
wand extension. Carefully press in
against the spring tension and twist
into the locked position.
Slide the spray wand extension into
the gun. Turn the wand collar clock-
wise onto the gun threads until tight.
Detergent suction tube not
properly connected to the
machine. Check connection.