Troubleshooting - Kärcher G 4000 OH User Manual

CAUTION
Remove the spark plug cable to prevent
accidental ignition of the engine before
making any repair.
Symptom
Engine will not start No gasoline
Unit does not reach
high pressure.
Output pressure var-
ies high and low.

TROUBLESHOOTING

Cause
Choke is not in the correct
position.
Water pressure built up in
the machine.
For additional engine problems refer to the engine man-
ual.
Diameter of garden hose is
too small.
Water supply is restricted. Check garden hose for kinks,
Not enough inlet water sup-
ply.
Water inlet filter is clogged. Remove filter and rinse out in
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
Spray nozzle is obstructed. Blow out or remove debris with a
Calcified gun, hose or
spray wand.
Solution
Fill gas tank
Slide choke lever out to closed
position.
Squeeze the trigger to release
the pressure.
Replace with a 5/8 inch or larger
garden hose.
leaks and blockage.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
warm water.
Remove black detergent nozzle
and attach high pressure nozzle
Always return the control to the
highest setting.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
Check that hoses and fittings are
air tight. Turn off machine and
purge pump by squeezing trig-
ger gun until a steady flow of wa-
ter emerges through the nozzle.
warm water.
fine needle.
Run distilled vinegar through de-
tergent suction tube.
15
English