Fuel system
Fuel system venting
The fuel system must be vented, e.g. after changing
fuel fi lter, if the fuel tank has been run dry and after
long stops.
Stationary engine:
1. Put a suitable vessel underneath the fuel fi lter.
2. Remove the protective cap from the venting nipp-
le (1) on the fi lter bracket. Connect a transparent
plastic hose to the nipple.
3. Open the venting nipple and pump up fuel with
the hand pump (2) until air-free fuel fl ows out.
Tighten the venting nipple while fuel is fl owing
out. Repeat with second fi lter.
4. Remove the hose and put the protective cap back
on the venting nipple.
5. Run the engine at idling speed for a couple of mi-
nutes to get any remaining air out of the system
and make sure that there are no leaks.
WARNING! Fire hazard. Work on the fuel system should be carried out on a cold engine. Fuel leaks and
spills on hot hot surfaces or electrical componentsmay cause fi re.
WARNING! Hot fuel may cause burns.
IMPORTANT! All unit injector maintenance must be carried out at an authorized workshop
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Maintenance: Fuel System
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