Fuel System - Nanni N2.10 Notice Et Mode D'emploi

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Fuel system

I DANGER
Stop the engine and let it
cool down before refuelling or
carrying out any operation on the
fuel system.
I WARNING
Fuel is flammable and can be
dangerous. Fuel spilled on hot
surface or near spark can burn.
Do not step on the injection
pipes. Always make sure they
are not damaged.
I CAUTION
Total cleanliness must be gua-
ranteed when working on the
fuel system. No impurities should
enter the injection system. Make
sure not to spill fuel on hoses.
NOTICE: All work on the fuel injec-
tion system must be carried out by a
authorized Nanni technician.
Check regularly the condition of
the components of the fuel system
(hoses, filter, clamps, etc). Change
it if any defect appears.
37
Operation of the fuel
system
The fuel is drawn from the tank by
the fuel feed pump and is injected
into the combustion chamber by the
injection pump. A fuel filter is placed
between the feed pump and the
injection pump.
The injection pump delivers a larger
amount of fuel than required for
combustion. The fuel that is not
burned is re-injected into the tank
through an over-flow pipe.
I CAUTION
The injection pump is an extre-
mely precise unit. Water entry in
the fuel system will cause major
failure to the injection pump and
to the whole fuel system.
A fuel prefilter with a water sepa-
rator should be installed between
the fuel tank and the fuel filter on
the engine. The prefilter should be
installed as close as possible to the
engine fuel filter. It must never be
installed on the engine as vibra-
tions affect the water/fuel separa-
tion process.
If the fuel tank is located below the
engine injection pump, an additio-
nal electric fuel feed pump should
be installed between the prefilter
and the feed pump of the engine.

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N2.14N3.21

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