Fuel System; Drain Water In Fuel Prefilter - Nanni Z4.205 Operator's Manual

S08 MAINTENANCE

FUEL SYSTEM

DANGER !
Stop the engine and let it cool down before refuelling or
carrying out any operation on the fuel system.
CAUTION !
Fuel is flammable and can be dangerous. Fuel spilled on
hot surfaces or near sparks can ignite. Do not step onto
the injection pipings. Take care to always keep them in
good condition.
WARNING !
Total cleanliness must be guaranteed when working on
the fuel system. No impurities should enter the injection
system. Make sure not to spill fuel on nearby hoses.
NOTE !
Any work on the fuel injection 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). When a clamp
is removed, replace it by a new one, always in stainless
steel.
WARNING !
The fuel feed pump is an extremely precise unit. Water
entry in the fuel system will cause major failure to the
injection pump and to the whole fuel system.

DRAIN WATER IN FUEL PREFILTER

The fuel prefilter is an optional extra not in the scope
of supply of the engine. The model of prefilter may vary
according to the boat.
NOTE !
Drain the water out of the prefilter several hours after the
engine has been stopped (when completely cold).
1. Close the fuel butterfly (control) valve on the fuel
tank.
2. Place a suitable container under the fuel prefilter. Get
floorcloths at hand to mop up any fuel which may
spill. Drain water and remove impurities in opening
the bottom plug.
3. Tighten the plug once the water has been drained.
4. Check the fuel filter element, change it if necessary.
5. Open the fuel butterfly (control) valve.
6. Bleed the fuel system (see in the following
paragraphs).
7. Start the engine and check for leaks.
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