Kärcher HDS 801 B, Original Instructions Manual, Page: 24 / 332

– 9
Note: As an anti-corrosion measure and for
neutralising the acid residue, we recom-
mend that you finally pump an alkaline so-
lution through the machine (for e.g. RM 81)
via the detergent tank.

DANGER
Risk of injury if the machine is left running
in an unattended state. Shut off the fuel
supply before doing any work on the appli-
ance.
Risk of burns! Do not touch hot silencers,
cylinders or radiator ribs.
– Fuel tank empty
 Refill.
Follow operating instructions of the engine
manufacturer!
– Fuel tank empty.
 Refill.
– Spark plug is dirty.
Spark plug is defective.
 Clean or replace the spark plug.
– No oil in the motor.
 Check oil level of the engine.
Replenish oil.
– Nozzle is set to "CHEM"
 Set nozzle to "High pressure".
– Nozzle is blocked/ washed out
 Clean/ replace nozzle.
– Sieve in the water connection is dirty
 Clean sieve.
– Sieb in front of the water scarcity safe-
guard is dirty.
 Clean sieve.
– Amount of water supply is too low.
 Check water supply level (refer to tech-
nical data).
– Detergent tank is empty.
 Top up detergent orset dosing value for
detergent to "0".
– Detergent dosing valve is leaky.
 Check dosing valve.
– Safety valve is displaced.
 Adjust safety valve (Customer Service).
– Safety valve is leaky.
 Replace the safety valve and/or the
washer (Customer Service).
– Overflow valve is defective
 Replace overflow valve (Customer Ser-
vice).
– Air within the system
Vent pump:
 Set dosing value for detergent to "0".
 Open the water supply.
 Start the engine according to the oper-
ating instructions of the engine manu-
facturer.
 To dearate the appliance, unscrew the
nozzle and allow the appliance to run
until the water exits in a bubble-free
state.
 Switch off the appliance and fit the noz-
zle again.
– Nozzle is blocked.
 Clean the nozzle.
– Safety valve is displaced.
 Adjust safety valve (Customer Service).
– Nozzle is set to "High pressure"
 Set nozzle to "CHEM".
– Detergent suction hose with filter is
leaky or blocked
 Check/ clean detergent suction hose
with filter.
– Washer is defective.
 Inform Customer Service.
– Temperature limiter has got triggered
again.
 Get the device checked by Customer
Service.
– Fuel tank empty
 Refill.
Troubleshooting
Fuel indicator lamp glows
Motor does not run
Device is not building up pressure
Water jet is not uniform
Device is not sucking in detergent
Oil in the high pressure pump is
milky
Burner does not start
24 EN