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Switchable fuel filters
WARNING! Working on or approaching a running
engine is a safety hazard. Beware of rotating
parts and hot surfaces.
1. Place a receptacle beneath the filters and
carefully clean the filter bracket.
2. Put the lever (2) in its right-hand end position.
3. Unscrew the left-hand fuel filter and discard it.
Use a filter wrench if necessary.
4. Screw on the new filter by hand until the gasket
make contact with the sealing surface. Then
tighten a further half turn, not any more!
5. Open the left-hand bleed screw (1) on the filter
bracket. Put the lever in operating position
(straight up). Close the bleed screw when the fuel
running out is free from air.
6. Put the lever in its left-hand end position and
change the right-hand fuel filter in the same way.
Fuel pre-filter/water separator
The pre-filter/water separator is installed between the
fuel tank and the engine and works in three stages –
Centrifugal separation, coagulation and filtration.
Water and impurities are collected in the bowl beneath
and can be drained through the drain valve. Place a
receptacle under the filter. Drain off water and conta-
minants through the plug (D).
Changing the filter elements
Close the fuel cock on the tank and place a recepta-
cle under the filter before changing filter.
1. Undo the T-bolt (1), remove the cover (2) and take
out the filter insert carefully while turning it.
2. Drain off water and contaminants through the drain
plug (D).
3. Fit a new filter insert and fill the container with cle-
an fuel.
4. Change the gasket on the cover and the O-ring on
the T-bolt. Moisten the gasket and O-ring with fuel
before assembling.
5. Fit the cover and tighten it by hand. Wipe off any
fuel from the filter housing.
6. Open the fuel cock andmake sure there are no le-
aks.
Maintenance: Fuel System
47
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