Service and cleaning
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Testing and inspection work
► Remove air filter cover.
► Remove air filter.
Observe the local disposal regulations.
► Insert a new air filter.
► Place the air filter cover on top.
► Mount all the fastening screws on the air filter cover.
► Tighten the fastening screws by hand.
► Close engine cover.
Refer to chapter "Close engine cover".
The air filter has been changed.
Pressure sensors
The installed pressure sensors are absolute pressure sensors.
Absolute pressure sensors and subject to fluctuations in the atmos-
phere air pressure (height difference, weather conditions etc.).
Before calibrating the pressure sensors, make sure that the water pump is
in a depressurised state.
Calibrate pressure sensors
The pressure sensors can be calibrated to the ambient pressure.
► Release the pressure in the water pump.
► Open Drain pump valve.
► Open valves for normal pressure outlet.
► Do not start the propulsion engine.
►Actuate Scroll back screen page or Scroll forward screen pagefunction
switch to display the Pump screen page.
Pump screen page appears on the display.
Pump screen page
► Actuate the Confirm message function switch for approx. 6 seconds to
calibrate the pressure sensors.
The pressure sensors are calibrated to the ambient pressure.
8.7.4 Electrics
Fuses and relays
The electrical circuits on the electrical unit of the portable pump are se-
cured with fuses and glass tube fuses.
The fuses are located on the side facing away from the operator be-
hind the air filter box.
The relay is located on the operator side, behind the air filter box.
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