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16 English
Output
pressure
varies high
and low
Pump is sucking in 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 inlet filter is
clogged.
Remove garden hose adapter and
rinse out in warm water.
Spray Nozzle is
obstructed.
Blow out or remove debris with a fine
needle.
Calcified gun, hose or
spray wand.
Run distilled vinegar through soap
tank.
No Detergent
Detergent tube is not
connected to the
detergent tank.
Check connection.
Detergent is too thick
Dilute detergent. For best results,
use Kärcher detergent.
Kinked detergent tube.
Check detergent tube, remove or
straighten kinks.
A high pressure nozzle
is attached.
Make sure the nozzle is the Soap
Nozzle.
Detergent Knob is
between tanks.
Turn knob fully to “1” or “2”.
Spray Nozzle is
obstructed.
Blow out or remove debris with a fine
needle.
Garden hose
connection
leaks
Loose fittings.
Tighten fittings.
Missing/worn
rubber washer.
Insert new washer.
Symptom
Cause
Solution
Summary of Contents for K1900R SC 1.106-129.0
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