Kärcher HD 2.3/24 P, Service Manual

Page: 14 / 17

CART SERIES • 9.801-629.0 • Rev. 07/17
PRESSURE WASHER Troubleshooting Guide
14
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
LOW OPERATING
PRESSURE
Insufficient water supply. Closed
faucet. Inlet hose kinked Use larger garden hose; clean inlet water
screen. Open faucet.
Clogged inlet hose strainer Check plumbing system for leaks. Re-tape
leaks with Teflon tape.
Faulty or improperly adjusted
unloader valve Adjust unloader for proper pressure. Install
repair kit when needed. Contact local dealer.
Worn packing in pump Contact local dealer.
Machine has been stored in
freezing temperatures Thaw out machine completely, including
hose, spray gun and wand.
Slow engine RPM Contact local dealer.
FLUCTUATING
PRESSURE
Worn or dirty pump valves Contact local dealer.
Nozzle is obstructed Blow out or remove debris with fine needle.
Pump sucking air, inlet hose
leaking Check all pump lines and connections.
PRESSURE LOW
AFTER PERIOD OF
NORMAL USE
Nozzle worn Replace nozzle.
Unloader valve worn Replace unloader valve.
ENGINE WILL NOT
START OR STOPS
WHILE OPERAT-
ING
Low oil shutdown Fill engine with oil.
Out of gas Fill fuel tank.
Water in gasoline Drain gas tank; fill with clean fuel.
ENGINE IS
OVERLOADED
Nozzle partially blocked Clean nozzle.
Excessive pressure from high
engine RPM Adjust engine throttle to lower RPM.
WATER OR OIL
LEAKING FROM
BOTTOM OF PUMP
A small amount of leaking is nor -
mal
If excessive leaking occurs, Contact local
dealer.
PRESENCE OF
WATER
IN PUMP OIL
Water sprayed at machine
Change oil. Direct spray away from ma -
chine.
High humidity in air Check and change oil twice as often.
Piston packing worn. Oil seal
worn.
Contact local dealer.