Troubleshooting - Kärcher K 3.97 M Operator's Manual

TROUBLESHOOTING – continued
Symptom
No detergent.
Garden hose
connection leaks.
12
Spray wand or Spray
wand extension leaks.
Pump is noisy.
Water leaks from pump (up
to 10 drops per minute is
permissible).
Oil Drip.
If you encounter any additional difficulties not listed, please call our service center for help.
Karcher Customer Support USA
Cause
Detergent suction tube not properly
connected to the machine.
Detergent is too thick.
Filter on detergent suction tube is
clogged.
Damaged or clogged detergent
suction tube.
Quattro Nozzle is in high pressure
position.
Discharge nozzle is obstructed.
Detergent container is empty.
Loose fittings.
Missing/worn rubber washer.
Quattro Nozzle not properly
attached.
Spray wand extension not properly
attached.
Broken o-ring.
Pump is sucking air.
Loose fittings.
Water seals are damaged or worn.
Oil seals are damaged or worn.
1-800-537-4129
Solution
Check connection.
Dilute detergent, for best results
use Kärcher detergent.
Run warm water through filter to
remove debris.
Remove obstruction or replace
detergent suction tube.
Turn Quattro Nozzle to low
pressure position.
Blow out or remove debris with
fine needle.
Add more detergent.
Tighten fittings.
Insert new washer.
Insert the Quattro Nozzle into the
spray wand extension. Push in
and turn clockwise to lock
Quattro Nozzle in place.
Slide the spray wand extension
into the trigger gun. Press in
against the spring tension and
twist into the lock position. Turn
the spray wand extension collar
clockwise until tight.
Call Kärcher customer service
hotline and order an o-ring.
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 service center.
Call service center.