Troubleshooting - Kärcher XPERT-HD 2.3/23 P Service 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
(BXD Comet & G
Pump Series Only)

TROUBLESHOOTING

POSSIBLE CAUSE
Insuffi cient water supply. Closed
faucet. Inlet hose kinked
Clogged inlet hose strainer
Faulty or mis-adjusted unloader
valve
Worn packing in pump
Machine has been stored in freez-
ing temperatures
Slow engine RPM
Worn or dirty pump valves
Nozzle is obstructed
Pump sucking air, inlet hose
leaking
Insuffi cient water supply
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
normal
Water sprayed at machine
High humidity in air
Piston packing worn. Oil seal worn.
8.780-000.0 • Xpert HD-DD-PD-DA • Rev. 12/10
SOLUTION
Use larger garden hose; clean inlet water
screen. Open faucet.
Check plumbing system for leaks. Retape
leaks with tefl on tape.
Adjust unloader for proper pressure. Install
repair kit when needed. Call local distributor.
Call Dealer Customer Support.
Thaw out machine completely, including
hose, spray gun and wand.
Call local distributor.
Call local distributor.
Blow out or remove debris with fi ne needle.
Check that all hoses and fi ttings are airtight.
Turn off machine and trigger spray gun until
a steady fl ow of water emerges through the
nozzle.
Turn water on full force. Check garden hose
for kinks, leaks or blockage.
Replace nozzle.
Replace unloader valve.
Fill engine with oil.
Fill fuel tank.
Drain gas tank; fi ll with clean fuel.
Clean nozzle.
Adjust engine throttle to lower RPM.
If excessive leaking occurs, Call local
distributor.
Change oil. Direct spray away from machine.
Check and change oil twice as often.
Call local distributor.
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