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Maintenance: Fuel system
Fuel system
Use only fuel recommended in the fuel specification. Please refer to "Technical Data: Fuel Specification". Always
observe cleanliness when refuelling and working with the fuel system.
All work concerning the engine injection pump or injectors is to be carried out at an authorized workshop. Breaking
the seal on the injection pump will void the warranty.
WARNING! Fire hazard. Work performed on the fuel system must be done on a cold engine. Fuel spill on hot
surfaces or electrical components can cause fires. Keep fuel-drenched rags where they are safe in case of
fire.
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Fuel delivery pipes
The delivery pipes must not be bent, twisted or exert-
ed to any other forces. Change delivery pipes that are
damaged.
WARNING! Fire hazard! The fuel delivery pipes
must not be bent, twisted or exerted to any other
forces.
Bleeding the fuel system
The fuel system must be bled e.g. after changing fuel
filter, if the fuel tank has been run dry and after long
stops. Refer to the next page for bleeding when re-
placing a switchable fuel filter during operation.
1. Place a receptacle under the fuel filter and open
the bleed screw (1) on the filter bracket.
2. Pump fuel using a hand pump (2) until the fuel run-
ning out is free from air bubbles. Tighten the bleed
screw while fuel is running out.
3. Pump another 10–20 times with the bleed screw
closed to attain a good feed pressure.
4. Make sure there are no leaks.
No other bleeding is normally required but if the engine
will not start, the injector pump must be bled as fol-
lows:
1. Detach the connection (3) and pump with a hand
pump until the fuel running out is free from air.
2. Tighten the connection while fuel is running out.
3. Pump another 10–20 times to attain a good feed
pressure.
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