Troubleshooting - Kärcher DG-232437 Operation Manual

PRObLEM
LOW OPERATING
PRESSURE
fLUCTUATING
PRESSURE
PRESSURE LOW
AfTER PERIOD Of
NORMAL USE
ENGINE WILL NOT
START OR STOPS
WHILE OPERATING
ENGINE IS
OvERLOADED
WATER OR OIL
LEAkING fROM
bOTTOM Of PUMP
PRESENCE Of
WATER
IN PUMP OIL
12

TROUbLESHOOTING

POSSIbLE CAUSE
Insufficient water supply. Closed
faucet. Inlet hose kinked
Clogged inlet hose strainer
Faulty or improperly adjusted
unloader valve
Worn packing in pump
Machine has been stored in
freezing temperatures
Slow engine RPM
Worn or dirty pump valves
Nozzle is obstructed
Pump sucking air, inlet hose leak-
ing
Nozzle worn
Unloader valve worn
Low oil shutdown
Out of gas
Water in gasoline
Nozzle partially blocked
Excessive pressure from high
engine RPM
A small amount of leaking is nor-
mal
Water sprayed at machine
High humidity in air
Piston packing worn. Oil seal
worn.
9.800-082.0 • 15751000-1100 • Rev. 04/09
SOLUTION
Use larger garden hose; clean inlet water
screen. Open faucet.
Check plumbing system for leaks. Re-tape
leaks with Teflon tape.
Adjust unloader for proper pressure. Install
repair kit when needed. Contact local deal-
er.
Contact local dealer.
Thaw out machine completely, including
hose, spray gun and wand.
Contact local dealer.
Contact local dealer.
Blow out or remove debris with fine needle.
Check all pump lines and connections.
Replace nozzle.
Replace unloader valve.
Fill engine with oil.
Fill fuel tank.
Drain gas tank; fill with clean fuel.
Clean nozzle.
Adjust engine throttle to lower RPM.
If excessive leaking occurs, Contact local
dealer.
Change oil. Direct spray away from ma-
chine.
Check and change oil twice as often.
Contact local dealer.