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17 Troubleshooting
Fault
The pressure washer
does not start when
switched on. The
electric motor buz‐
zes.
The pressure washer
switches off while in
operation.
The high-pressure
pump repeatedly
switches on and off
without squeezing the
spray gun trigger.
The working pressure
fluctuates or drops.
The shape of the
water jet has chan‐
ged.
Detergent is no lon‐
ger sucked in.
Connections with
pressure washer,
high-pressure hose,
spray gun or spray
lance are stiff.
0458-004-9821-B
Cause
The extension cord is too long.
The electric motor is too warm.
The mains voltage is too low.
The extension cord has an incorrect
cross-section.
The extension cord is too long.
The plug of the connecting cord or
extension cord has been pulled out of
the socket.
The circuit-breaker (fuse) or the resi‐
dual current circuit breaker has trip‐
ped. There is an electrical overload or
a fault in the circuit.
The fuse rating of the socket is too
low.
The electric motor is too warm.
There is a leak in the high-pressure
pump, high-pressure hose or spray
attachment.
There is not enough water.
The nozzle is blocked.
The water intake screen or water filter
is blocked.
The high-pressure pump, high-press‐
ure hose or spray attachment is lea‐
king or faulty.
The nozzle is blocked.
The nozzle is worn.
The detergent container is empty.
The filter in the detergent bottle is dirty. ► Rinse out the filter under running
The gaskets of the connections have
not been greased.
Remedy
► Use an extension cord with the cor‐
rect length,
18.2
► Allow the pressure washer to cool
for 5 minutes.
► Clean the nozzle.
► Squeeze and hold the spray gun
trigger and switch on the pressure
washer.
► Switch off other loads connected to
the same circuit.
► Use an extension cord with an ade‐
quate cross-section,
► Use an extension cord with the cor‐
rect length,
18.2
► Plug in mains plug of connecting
cord or extension cord.
► Look for cause of tripping and
remedy it. Engage circuit-breaker
(fuse) or the residual current circuit
breaker.
► Switch off other loads connected to
the same circuit.
► Plug the connecting cable into a
socket with the correct fuse rating,
18.1.
► Allow the pressure washer to cool
for 5 minutes.
► Clean the nozzle.
► Ask a STIHL servicing dealer to
inspect the pressure washer.
► Open water tap fully.
► Make sure that a sufficient quantity
of water is available.
► Clean the nozzle.
► Clean water intake screen and water
filter.
► Ask a STIHL servicing dealer to
inspect the pressure washer.
► Clean the nozzle.
► Fit a new nozzle.
► Fill the detergent bottle with cleaning
agent.
water.
► Lubricate the gaskets.
English
18.2
17.2
43
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