Karcher G 4000 SH manual Troubleshooting, Symptom Cause Solution

TROUBLESHOOTING

￿CAUTION

Remove the spark plug cable to prevent accidental ignition of the engine before making any repair.

Symptom	Cause	Solution
Engine will not	No gasoline	Fill gas tank
start
	Choke is not in the correct	Slide choke lever out to
	position.	closed position.
	Water pressure built up in the	Squeeze the trigger to release
	machine.	the pressure.
	For additional engine problems	refer to the engine manual.
Unit does not	Diameter of garden hose is too	Replace with a 5/8 inch or
reach high	small.	larger garden hose.
pressure.	Water supply is restricted.	Check garden hose for kinks,
		leaks and blockage.
	Not enough inlet water supply.	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	Remove black detergent
	attached.	nozzle and attach high
		pressure nozzle
Output pressure	Not enough inlet water supply.	Turn water on full force.
varies high and		Check garden hose for kinks,
low.		leaks or blockage.
	Pump is sucking air.	Check that hoses and fittings
		are air tight. Turn off machine
		and purge pump by squeez-
		ing trigger gun until a steady
		flow of water 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	Run distilled vinegar through
	wand.	detergent suction tube.

14English