Karcher G 4000 OH servo press - Manual (Page 15)

English
15
ƽ CAUTION
Remove the spark plug cable to prevent
accidental ignition of the engine before
making any repair.
TROUBLESHOOTING
Symptom Cause Solution
Engine will not start No gasoline Fill gas tank
Choke is not in the correct
position. Slide choke lever out to closed
position.
Water pressure built up in
the machine. Squeeze the trigger to release
the pressure.
For additional engine problems refer to the engine man-
ual.
Unit does not reach
high pressure. Diameter of garden hose is
too small. Replace with a 5/8 inch or larger
garden hose.
Water supply is restricted. Check garden hose for kinks,
leaks and blockage.
Not enough inlet water sup-
ply. Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
Water inlet filter is clogged. Remove filter and rinse out in
warm water.
Black detergent nozzle is
attached. Remove black detergent nozzle
and attach high pressure nozzle
Remote Pressure Control
regulator not in the highest
setting. Always return the control to the
highest setting.
Output pressure var-
ies high and low. Not enough inlet water sup-
ply. Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
Pump is sucking air. 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.
Water inlet filter is clogged. Remove filter 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 de-
tergent suction tube.