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PROBLEM
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
ENGINE OPERATES
FOR 15 MINUTES
THEN STOPS
ENGINE LACKS
POWER
ENGINE FALTERS
WATER DRIPPING
FROM UNDER PUMP
OIL DRIPPING FROM
UNDER PUMP
WATER LEAKING
FROM PUMP
PROTECTOR
TROUBLESHOOTING
POSSIBLE CAUSE
Worn or dirty pump valves
Nozzle is obstructed
Pump sucking air, inlet hose
leaking
Insufficient 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. Call local distributor.
Not enough gas or engine oil
Vapor lock developed by heat of
day
Obstruction in fuel filter
Dirty air filter
Choke is opened too soon
Piston packing worn
O-Ring plunger retainer worn
Cracked piston
Oil seal worn or damaged
Spray gun closed with machine
running 5 minutes or longer
Excess water supply pressure
KARCHER Surface Cleaner 9.802-898.0
SOLUTION
Call local distributor.
Blow out or remove debris with fine needle.
Check that all hoses and fittings are airtight.
Turn off machine and trigger spray gun until
a steady flow 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; fill with clean fuel.
Clean nozzle.
Adjust engine throttle to lower RPM.
If excessive leaking occurs, call local
distributor.
Change oil. Direct spray away from ma-
chine.
Check and change oil twice as often.
Fill tank with gas. Check oil level.
Keep gas tank full to avoid vapor locking.
Clean or replace fuel filter.
Replace air filter.
Move choke to halfway position until engine
runs smoothly.
Call local distributor.
Call local distributor.
Call local distributor.
Call local distributor.
Open spray gun or turn off machine.
Place a pressure regulator at end of 50'
garden hose.
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