Troubleshooting - Kärcher G 4000 OH Manual

You can rectify minor faults yourself
with the help of the following overview.
If in doubt, please consult the autho-
rized customer service.
Symptom
Engine will not
start
Unit does not
reach high pres-
sure.
Output pressure
varies high and
low.

Troubleshooting

Cause
No gasoline
Choke is not in the correct
position.
Water pressure built up in
the machine.
For additional engine problems refer to the engine manual.
Diameter of garden hose is
too small.
Water supply is restricted. Check garden hose for kinks, leaks
Not enough inlet water sup-
ply.
Water inlet filter is clogged. Remove filter and rinse out in warm
Black detergent nozzle is
attached.
Remote Pressure Control
regulator not in the highest
setting.
Not enough inlet water sup-
ply.
Pump is sucking air.
Water inlet filter is clogged. Remove filter and rinse out in warm
Spray nozzle is obstructed. Blow out or remove debris with a
Calcified gun, hose or
spray wand.
Caution
Remove the spark plug cable to pre-
vent accidental ignition of the engine
before making any repair.
Solution
Fill gas tank
Slide choke lever out to closed po-
sition.
Squeeze the trigger to release the
pressure.
Replace with a larger garden hose.
and blockage.
Turn water on full force. Check gar-
den hose for kinks, leaks or block-
age.
water.
Remove black detergent nozzle
and attach high pressure nozzle
Always return the control to the
highest setting.
Turn water on full force. Check gar-
den hose for kinks, leaks or block-
age.
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.
fine needle.
Run distilled vinegar through deter-
gent suction tube.
14