Stihl RE 120, Instruction Manual, Page: 20 / 28

16 Maintenance
16.1 Maintenance intervals
Maintenance intervals depend on the ambient
conditions and the operating conditions. STIHL
recommends the following maintenance inter‐
vals:
Monthly
► Clean water intake screen.
17 Repairing
17.1 Repairing the pressure washer
The user cannot personally repair the pressure
washer and accessory.
► If the pressure washer or accessory is dam‐
aged: Do not use the pressure washer or
accessory. Consult a STIHL servicing dealer.
18 Troubleshooting
18.1 Correcting faults in the pressure washer
Fault Cause Remedy
The pressure washer
does not start
although the spray
gun trigger is
squeezed.
The mains plug of the connecting
cable or extension cord is not plugged
in.
► Plug in mains plug of connecting
cord or extension cord.
The circuit-breaker (fuse) or the resid‐
ual current circuit breaker has tripped.
There is an electrical overload or a
fault in the circuit.
► Look for cause of tripping and rem‐
edy it. Engage circuit-breaker (fuse)
or the residual current circuit
breaker.
► Switch off other loads connected to
the same circuit.
The fuse rating of the socket is too
low.
► Plug the connecting cable into a
socket with the correct fuse rating,
19.
The extension cord has an incorrect
cross-section.
► Use an extension cord with an ade‐
quate cross-section, 19.4
The extension cord is too long. ► Use an extension cord with the cor‐
rect length, 19.4
The electric motor is too warm. ► Allow the pressure washer to cool
for 5 minutes.
► Clean the nozzle.
The pressure washer
does not start when
switched on. The
electric motor buz‐
zes.
The mains voltage is too low. ► Squeeze and hold the spray gun
trigger and switch on the pressure
washer.
► Switch off other loads connected to
the same circuit.
The extension cord has an incorrect
cross-section.
► Use an extension cord with an ade‐
quate cross-section, 19.4
The extension cord is too long. ► Use an extension cord with the cor‐
rect length, 19.4
The pressure washer
switches off while in
operation.
The plug of the connecting cord or
extension cord has been pulled out of
the socket.
► Plug in mains plug of connecting
cord or extension cord.
The circuit-breaker (fuse) or the resid‐
ual current circuit breaker has tripped.
There is an electrical overload or a
fault in the circuit.
► Look for cause of tripping and rem‐
edy it. Engage circuit-breaker (fuse)
or the residual current circuit
breaker.
► Switch off other loads connected to
the same circuit.
The fuse rating of the socket is too
low.
► Plug the connecting cable into a
socket with the correct fuse rating,
19.
English 16 Maintenance
20 0458-836-0121-A