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Service and Maintenance
Fuel system
Fuel
Always observe cleanliness when refuelling and working
with the fuel system. Always use a diesel fuel of high quality
supplied by a well known oil company.
In low winter temperatures, use a special winter fuel sup-
plied by these well known oil companies. Winter fuel is
more volatile and reduces the risk for wax deposits.
Fuel requirements, see under the heading ”Data, specifica-
tions” in the chapter ”Technical Data”.
The injector pump should be sealed according to applica-
ble regulations.
The seal on the injector pump may only be broken by an
authorized mechanic. If the seal is broken by someone
un authorized, all warranties will become void.
Fuel filter
The degree of purity of the fuel is of great importance for the
lifetime of the filter. Symptoms of a blocked filter are deterio-
rated engine output and starting problems.
The recommended interval for changing the filter is once a
year but this period can be lengthened if great cleanliness
is observed.
If the engine feels abnormally weak, it can be due to a
blocked fuel filter. Read in the service manual on how the
fuel feed pressure is measured.
The fuel filters are located on the right-hand side of the en-
gine and is accessible from below. Depending on the en-
gine model, they are to be found under the starter motor or
in the middle of the engine. They are smaller than the oil fil-
ters located further back on the right-hand side of the en-
gine.
Fuel filter
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