Maintenance and care
29
Contamination gauge
À
Red display cylinder
Á
Return knob
In the window a red field appears which
grows in size as the contamination in-
creases.
If the red field is fully visible in the window,
the air filter is contaminated and must be
cleaned or changed.
When the filter has been changed pull the
return knob. The red field then disap-
pears.
1
2
Display: filter service is due
Display: filter is ready for operation
Changing the filter cartridge
Caution:
No dust must get to the clear air
end.
Remove the hex hut, take out the con-
taminated cartridge and fit a new one.
Clean the filter housing with a damp cloth,
especially at the sealing face for the car-
tridge.
Caution:
The engine must not be run with-
out a main cartridge.
