Troubleshooting - Kärcher G 4000 OH Operator's Manual

CAUTION
Remove the spark plug cable to pre-
vent accidental ignition of the engine
before making any repair.
Symptom Cause
Engine will No gasoline
not start
Choke is not in the correct po-
sition.
Water pressure built up in the
machine.
For additional engine problems refer to the engine manual.
Unit does not Diameter of garden hose is too
reach high small.
pressure.
Water supply is restricted.
Not enough inlet water supply. Turn water on full force. Check gar-
Water inlet filter is clogged.
Black detergent nozzle is at-
tached.
Remote Pressure Control reg-
ulator not in the highest set-
ting.
Output pres- Not enough inlet water supply. Turn water on full force. Check gar-
sure varies
high and low.
Pump is sucking air.
Water inlet filter is clogged.
Spray nozzle is obstructed.
Calcified gun, hose or spray
wand.

TROUBLESHOOTING

– 14
EN
Solution
Fill gas tank
Slide choke lever out to closed posi-
tion.
Squeeze the trigger to release the
pressure.
Replace with a 5/8 inch or larger gar-
den hose.
Check garden hose for kinks, leaks
and blockage.
den hose for kinks, leaks or block-
age.
Remove filter and rinse out in warm
water.
Remove black detergent nozzle and
attach high pressure nozzle
Always return the control to the high-
est setting.
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.
Remove filter and rinse out in warm
water.
Blow out or remove debris with a fine
needle.
Run distilled vinegar through deter-
gent suction tube.
15