Nanni 4.390 TDI User manual

User manual
Page 3 sur 24
English
Reference: 970 313 180
TABLE OF CONTENTS
1. INTRO UCTION p.1
•Presentation
•Servicing and spare parts
•Safety indications
•Protection of the environment
2.LIFE AT SEA p.5
•Introduction to navigation
•Safety on board
3. ENGINE I ENTIFICATION p.6
4. INSTALLING THE ENGINE p.8
•Principles relative to check of installation
performed
•Preparation before commissioning
5. OPERATING PRECAUTIONS p.10
•Engine and fluid recommendations
•Regular checks to be performed
6. OPERATION p.11
•Engine operation
•Instrumentation
•perating table
7. SERVICING AN MAINTENANCE p.15
•Work safety in engine compartment
•Servicing and maintenance tables
•Logbook
•Detailed operations
•Wintering
•Extended storage
8. TROUBLESHOOTING p.23
*All the information and specifications contained in
this manual are based on the technical data applicable
on the date of publication. This manual is subject to
modifications and updates.
SAFETY SYMBOLS
The following symbols are used in the manual to
indicate a safety hazard. The symbols are intended to
draw your attention to elements or operations which
could be hazardous to you or other users of this engine.
Carefully read the safety guidelines given with these
symbols. Be sure to read the safety instructions and
rules before commissioning your engine.
ANGER
This symbol refers to an extremely serious danger
with high probability of resulting death or
irreparable physical injury if specific, appropriate
measures are not taken.
WARNING
This refers to a danger which could result in serious
physical injury or death if specific, appropriate
measures are not taken..
CAUTION
This symbol is used to indicate safety measures or to
draw your attention to dangerous practices which
could result in physical injury or damage to the boat
or its components.
The engine user should take all the necessary
precautions relative to handling and protection and
should contact a professional for advice whenever
necessary
Failure to observe the safety instructions can result in :
Physical hazards, danger of environmental pollution
(dangerous substance leaks), danger to equipment with
risk of failure of essential engine functions).
ENVIRONMENT
This symbol refers to important instructions relative to
protection of the environment.
1.INTRO UCTION
•Presentation
Thank you and congratulations for purchasing a
NANNI DIESEL product.
Your NANNI DIESEL engine is a product of NANNI
INDUSTRIES quality engineering and production.
Your engine is built with the finest materials in
accordance with precise specifications and strict
production methods.
Your NANNI DIESEL engine will provide you with a
reliable source of power for your boat for many years to
come.
Correct installation of the engine on your boat is of the
greatest importance for safe navigation and protection
of the environment.
Our engineers at NANNI IN USTRIES are among
the world's finest. Their experience and knowledge
of the sea, combined with the technical skills and
experience of the engineering teams at MAN,
KUBOTA and TOYOTA guaranty you the highest
level of performance, reliability and savings
available.
WARNING: Your engine must be installed by a
Shipyard or a representative qualified by N NNI
INDUSTRIES in compliance of the on-board
installation instructions.
NANNIDIESEL
Uses and recommends
User manual for NANNI IESEL engines

User Manual
Page 4 sur 28
This manual contains all the information required for
correct operation of your engine.
With a network of agents and distributors in more than
50 countries, NANNI INDUSTRIES guaranties your
engine throughout the world. Whether it be parts, labor
or simple advice, everything has been thought out to
ensure you the best possible service.
Don't hesitate to contact your approved NANNI
DIESEL dealer or to browse our Internet site at
www.nannidiesel.com.
Happy sailing!
Carefully read this manual before using your engine.
Always observe the safety guidelines.
WARNING: To ensure correct, long-lasting
operation of your marine engine, the engine must be
used in a way which is compatible with the engine's
definition and to its transmission (type of boat,
operating time and rpm speed).
•Servicing and spare parts
ur marine engines are designed to ensure excellent
operating reliability and a long service life.
The engine user is responsible for all safety inspections
and servicing, and observance of the maintenance
instructions detailed in this manual.
All maintenance must be performed by a NANNI
INDUSTRIES-approved specialist.
Component wear and servicing costs naturally
generated by use of the engine do not represent
manufacturing faults or material defects with respect to
the terms of the warranty.
The performance and reliability of your engine depend
on application of the operating, servicing and
maintenance instructions described in this manual.
We strongly discourage any changes to the engine
rpm speed settings or any other technical changes
(accessories, spare parts, coupled equipment …)
which are not approved by N NNI INDUSTRIES. We
decline any responsibility for interventions which have
not been performed under our control.
efinition of application:
The Silverwake warranty is defined either for a
«pleasure boat" or for a "commercial" use of the
engine. For more information concerning the details
justifying the "pleasure boat" designation, refer to our
Silverwake warranty book.
The clutch disks are not guarantied on gear boxes
equipped with trolling valves.
For all commercial o
r professional applications, contact
NANNI INDUSTRIES; we will propose a warranty
suited to your specific utilization needs.
•Safety indications :
This manual has been drawn up to allow you to make
the best use of your engine and its equipment. This
manua
l contains important instructions which must be
observed when using the engine.
Make sure you have thoroughly read this manual.
The manual must always be available at the location
where the engine is used.
Handling the diesel engine can be very dangerous;
always observe the safety guidelines.
Safety symbols on engine :
Different information is given in the form of logos
directly on the engine. This information is intended to
allow you to quickly locate certain components and to
warn you against possible hazards
when intervening on
the engine.
Symbols :
This symbol, indicated on the engine,
means that you must read the manual before performing
any operations on the engine.
This symbol points to electrical hazards.
This symbol points to hot parts where there
may be a significant risk of burns.
This symbol indicates that there may be a fire
hazard.
This symbol indicates that you m
ust not smoke
or produce any flames or sparks in the immediate area
as the area represents a fire hazard under these
circumstances.
This symbol indicates an area where there are
pressurized fluids.
This symbol in
dicates dangerous rotating parts
of the engine.
This symbol locates the degassing ports.

User manual
Page 5 sur 24
English
This symbol locates where you can check the
coolant level.
This symbol locates where you can check the
engine oil.
This symbol locates the engine heat exchanger
port.
This symbol locates the oil drain drain port.
This label indicates that you must distribute
and balance the lifting efforts.
Safety rules:
YOU MUST OBSERVE THE FOLLOWING
SAFETY RULES
-bserve the warning and caution labels on the
engine.
-Remove the ignition key and close the battery
switch before intervening on the engine and its
equipment.
-Close the engine cover and install the protective
equipment before starting up the engine.
-Always keep the work area around the engine clean.
-Store all flammable liquids outside the engine
compartment.
-Never use the engine when under the influence of
alcohol, medication or drugs.
WEAR PROTECTIVE CLOTHING
-To avoid physical injury, stay away from rotating
components and never wear baggy clothes near an
engine which is running.
-Use safety equipment such as goggles, gloves, etc.
as may be required when around the engine.
FUELS AN LUBRICANTS
-
Stop the engine when filling the fuel tank or the oil
reservoir.
-
Never smoke or bring a flame near to the engine
when filling with fuel.
-Wear gloves when searching for a possible leak.
-
Hot oil can cause burns, allow the engine to cool
before inspecting the oil level, changing the oil or
the oil filter cartridge.
-
Always use fuels and lubricants recommended by
NANNI DIESEL
EXHAUST GAS PREVENTION
-
Run the engine in a properly ventilated space, clear
of people and animals. Accumulated exhaust gases
can be poisonous.
PRESSURE
-
Do not open the coolant plugs or oil plugs when the
engine is running or when it is hot. Release all
pressure in the circuits before removing plugs.
-
Do not check for possible pressure leaks with bare
hands. Always wear gloves. Pressurized fluids
ejected can cause serious injuries. In the event of an
injury by a fluid jet, immediately contact your
doctor.
BATTERY
-
A highly explosive, inflammable and volatile gas
mixture is formed when the battery is charging.
Never smoke near the battery or bring any flames or
sparks near the battery.
-Never short-circuit the battery terminals.
-The battery electrolyte is highly
corrosive. Always
wear gloves and protective goggles.
ELECTRICAL WIRING
-
Switch off the engine and open the battery switch
before any intervention on the electrical equipment.
-
Check the condition of the cables and electrical
wiring; a short-circuit can cause a fire.
-Check that all connections are properly tightened.
ISCAR ING USE FLUI S
-
Fluids used in operation of the engine represent a
health hazard. Carefully read the instructions on the
product packaging.
-bserve all environment protection rules a
s
concerns discarding of oil, fuel, coolant, filters and
batteries.

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Page 6 sur 28
•Protection of the environment
The sea is a wonderful playground for pleasure boaters.
Throughout time, it has nourished our imagination
through such major authors as Jules Verne or
Hemingway. The aquatic environment is possibly the
least known of our planet which represents a wealth of
unknown resources and an ocean of mystery.
The beauty of our coastlines and the cleanliness of the
sea depend on each person's individual contribution to
the respect and protection of these natural resources.
ur engines have been developed to have a minimum
impact on the environment. This goal can only be
achieved with your full cooperation. For this purpose,
you must carefully apply our servicing and maintenance
directives and the following recommended practices :
situation Recommended practice
At quay Check with the harbor master's
office for equipment available to limit
pollution.
Sort and discard your household
waste in the appropriate containers.
Use sanitary blocks to limit waste in
the port.
Clean the boat using biodegradable
products to reduce phosphate and
nitrate inputs to the environment.
Boat
servicing
and
maintenance
Use refit areas made available in the
port.
Do not pollute the rain water
networks with solvents, acids, oils and
hydrocarbons.
Perform sanding and paint gun work
only having belted the hull with a
cover.
bserve all applicable rules as
concerns use of anti-fouling paints and
preferably use paints which are less
harmful for the environment.
Take all poisonous and specific
wastes to the appropriate disposal
areas provided for this purpose.
situation Recommended practice
At resupply
station Do not overfill the fuel tank and
drip-off the fuel handle in the drain
hole before hanging up the handle.
Be sure to fill the correct
reservoir when filling with water or
fuel.
Ask the fuel pump handler for an
absorbing kit if there are any
accidental hydrocarbon spills in the
water.
Before casting
off lines
Be sure you have disposed of all
waste and other poisonous products
in the specific equipment provided
for this purpose.
When sailing
or at anchor
Never throw your waste into the
sea.
Collecting waste on the coastline is
more costly than waste placed in a
container.
Furthermore, Waste thrown over
board can have harmful effects :
-interfere with navigation
-visual nuisance
-poison hazard
-sanitary hazard
-impact on marine animal
and plant life.
Respect protected areas.

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English
2.LIFE AT SEA
•Introduction to navigation
Where to get training?
Various organizations can provide training in
navigation and safety at sea:
Coast guards associations
Sailing clubs
Red Cross
Sea and waterway police
This is a limited list given for your reference.
Parameters influencing behavior of boat:
istribution of weights.
The manner in which the weights (passengers and
equipment) are distributed on the boat can have the
following repercussions:
If the center of gravity shifts toward the rear:
-increase in speed and engine rpm speed
-in certain extreme cases, pitching of boat
-bouncing of bow on rough sea
-increased risk of boat taking water by wake wave at
end of planing.
If center of gravity is shifted forward:
-exit from planing facilitated
-navigation in rough water facilitated
-in certain extreme cases, can cause directional
instability.
Boat hull.
To maintain optimum speed, the boat hull must satisfy
the following conditions:
The hull must be clean and free of any shells or
seaweed. The submerged part of the hull and the
transmission must be painted with an anti-fouling
product to preserve their surface condition.
The hull must be free of any deformations and must
be nearly flat where in contact with the water.
Check and replace (if necessary) the anodes
installed on the hull, the appendages and
transmissions. For the size and choice of type of
anode, contact a qualified technician. The anodes are
different depending on whether you are sailing on
fresh or salt water.
Never paint the anodes. Refer to the applicable
regulations concerning anti-fouling paint. Do not
paint the hull over an area of 40mm around the stern
-
drive.
For (extended) anchoring, vegetation can occur on
the hull, on the keel and rudder, significantly
penalizing the dynamic qualities of the boat.
Furthermore, vegetation can obstruct the cooling
system and result in damage to the engine (by
overheating).
•Safety on board
Carefully read the instructions manual
and make it
a habit to correctly and safety operate the engine and
all the boat's components.
You should be perfectly familiar with the
nautical
code and the safety at sea rules. Do not hesi
tate to
contact the competent authorities or organizations.
bserve the maintenance and servicing
guidelines
which will ensure the reliability of your engine.
Perform the daily visual inspections
(chapter 5)
before starting and after stopping the engine.
D
o not perform any maneuvers which are too
abrupt and which could catch your passengers by
surprise.

Be aware that the propeller represents a significant
danger for persons in the water; never come too near
to persons swimming or to swimming areas.
Eddies c
reated at the stern can result in suction of
the exhaust gases into the cabin. In this case, do not
open any hatch or valve of the boat and try to change
some of the sailing settings (speed, distribution of
weights…).

nly fluids recommended by NANNI
INDUSTRIES should be used.

bserve the load and operating capacities of your
boat.
Check your boat on-board safety equipment.
Do not consume alcohol or drugs.

Be fully informed as to your area of navigation and
avoid dangerous locations.
Know how to recognize w
eather conditions and
navigate cautiously with respect to weather
conditions.

Always inform someone as to your sailing plan
(destination and time of arrival).
Stay alert and aware of surrounding areas.
To get the most from your sailing pleasure, it is al
ways
best to adopt a responsible and cautious attitude.
Contact your local authorities for all applicable laws
and restrictions relative to boats in your sailing area.
You should have a minimum number of safety
equipment items on board to handle the most
critical
situations. A non-
exhaustive list is proposed. We
recommend that you contact the competent organization
as to the applicable legislation by which your home port
is concerned.
Nanni Diesel can supply a first-
aid kit which we
recommend that you have on board.

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Safety guidelines:
Safety
equipment
The safety equipment is primordial.
It is there to ensure your safety and
the safety of your passengers.
Make sure your safety equipment is
in good operating condition and is
not obsolete.
Find out about the mandatory
equipment relative to your flag and
sailing area.
Refer to the mandatory equipment
by country
Spare parts
and tools
Fuel filters
il filters
Fuses
Adhesive tape
Assortment of clamps for hoses
il for engine
Coolant
Tool kit
V-belt…
For more details, refer to the page with
the engine characteristics in the
appendices.
Attitude
Always make sure you have the sea
chart for the region in which you
will be sailing, and a compass.
Carefully study your routes.
Determine the distance to be
covered and check it against the fuel
consumption.
Get all the necessary weather
information.
Inform family or friends about your
trip.
Inform your passengers on the
safety instructions and teach them
how to use the safety equipment.
Make sure you are perfectly
familiar with the nautical code.
…
3.ENGINE I ENTIFICATION
n all correspondence, requests for information and
spare parts orders, you must indicate the information
specified on the engine and gearbox nameplates
IMPORTANT: Note the serial number and t
he
designation of the engine model and transmission.
Keep a copy of this information in a safe location. The
Silverwake warranty contains this information; it
forms the reference document concerning the
warranty and should be kept in a safe location.
The table below gives a non-
exhaustive list of the
components on our marine engines; your engine may
not contain all of these components.
Refer to the appendices for views of your engine to
locate the various components forming your engine.
The components f
orming your marine engine are
represented in the "appendices" of your manual. The
"servicing and maintenance" section often refers to
these components as follows:
Component number in identification table
Ex: 10, refers to the air filter; the associated nu
mber is
used to identify it on the photos provided in the
appendix.
ENGINE TYPE
SERIAL NUMBER
SPECIFICATI N

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English
Identification of main components :
N. esignation Page Function
1 Alternator
A-9
2 Alternator belt
A-9/A-4
3 Electrical connector
4 Starter
A-9
5 Electric motor stopping system
A-9
6 Battery (-) connecting cable=ground cable
A-9
7 Startup relay
8 ir heater / preheating relay
9 Neutral safety contactor
Electric system
10 Air filter
A-9/A-5
11 Injection pump
A-9
12 Booster pump
A-9
13 Priming pump
A-9
14 Acceleration control
A-9
15 Turbocharger
A-9
16 Turbo drain valve
17 Turbo degassing valve
18 Condensation outlet hole
19 Fuel cooler
20 Fuel filter and water detector
A-9/A-5
21 Intake air cooler
22 Water injection exhaust elbow
A-9
23 Anticorrosion anode
A-9/A-4
Fuel supply and exhaust
24 Oil filler port
A-9
25 Oil drain (suction tube or pump)
A-9/A-5
26 Oil gauge
A-9/A-4
27 Oil filter
A-9
28 Oil/Pressure switch pressure transmitter
Lubrication
29 Heat exchanger / exchanger body (keel cooling)
A-9
30 Coolant filler port A
A-9/A-4
31 Coolant filler port B
A-9
32 Block drain plug
A-9
33 Freshwater pump
A-9
34 Seawater pump
A-9/A-5
35 Seawater filter
36 Exchanger drain plug
A-9
37 Thermostat-controlled valve
A-9
Cooling
38 Oil cooler for power steering (stern drive version) or gearbox
39 Hydraulic oil reservoir (stern drive version)
40 Gearbox
A-9
41 Flexible suspension
A-9
Parts indicated in italics refer to optional equipment which do not necessarily form part of your engine.

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4. INSTALLING THE ENGINE
•Principles relative to check of installation
performed (see pA-6 and pA-7).
WARNING: Your engine must be installed by a
Shipyard or a qualified representative of NANNI
IN USTRIES in compliance with the on-board
installation instructions.
NANNI DIESEL engines are known for their
ruggedness and reliability.
When one of our engines is purchased for the first time
or second hand, a collaborative relationship between
the engine owner and NANNI INDUSTRIES is
initiated.
NANNI INDUSTRIES undertakes, under the terms of
the warranty, to ensure the after-sales service.
As owner, you undertake to carefully read the
documentation supplied with the engine: User Manual
and Silverwake warranty manual; and to carefully
observe the servicing, maintenance and utilization
guidelines.
ur collaboration is first sealed by the start-up
voucher in the Silverwake warranty document. This
voucher must be co-signed by the owner and the dealer
or NANNIDIESEL center just after commissioning of
the engine by a qualified technician. This voucher
contains the essential checks to be performed.
These checks require a good level of technical
understanding. You can consult the technical
documentation concerning the installation on request to
the qualified technician approved by NANNI
INDUSTRIES who has performed the installation.
However, this documentation may appear to be too
complex. We recommend that you check with the
technician to perform these checks with his assistance.
List of checks:
Engine alignment
Engine mountings
Tension of belts
Battery: level and voltage
Fuel circuit: priming and purge
Closed cooling circuit: priming and purge
Check of engine oil and gearbox oil level /
tightening of couplings and drain plug
Control unit: check of accelerator and gearbox
cables
Gearbox: check of Forward/Reverse controls and
trolling valve (if equipped)
Instrument panel: check of indicator values and
audible/lighted alarms.
The seawater tap for lubrication of the stuffing
box should not be installed on a sailboat.
• Engine oil can injure your skin – lways wear
gloves
Note:
There is a specific installation configuration called
keel cooling. The main fea
ture of this installation
concerns operation of its cooling system which consists
of a closed circuit only. The circuit is submerged at
locations in the seawater by which it is indirectly cooled
by thermal conductivity between the envelope and the
seawater.
•Preparation before commissioning
Once the engine has been installed on board and
before removing the covers blanking covering the
various ports, clean the outer surfaces of the engine.
These operations must be performed by the shipyard
or by an approved workshop.
General verification. See SILVERWAKE®
warranty
conditions.
For reasons concerning transport, certain engines are
supplied empty of any operating fluids. In all cases, you
must:
-
Check the fluid levels and, if necessary, fill the engine
and transmission reservoirs with oil.
-
Fill the exchanger with coolant and perform the
degassing operations.
-Check the tension of the belts.
-
Check the tightening of various couplings and drain
plugs (water and oil)
-Check the tightening of the electrical lugs, b
attery
terminals, battery switch, connection of extensions, level
of electrolyte in batteries.
-Check the acceleration control.
-
Check that the "accelerator and gearbox" lever(s) are
properly synchronized. Engagement of the clutch should
be completed when you begin to accelerate.
-
Perform a final check of the attachments and a visual
inspection of the overall engine-
propulsion unit. If
necessary, perform any paint touch-
ups which may be
necessary on the unit and its accessories.
ANGER: •
••
• Never bring a fl
ame or spark near the
battery. n extremely explosive gas mixture forms
when the battery is charging. Do not short-
circuit the
battery.
•
••
•
The battery electrolyte is highly corrosive: if battery
acid comes into contact with the skin, wash
immediately with
soapy water. If battery acid is
projected into the eye, rinse thoroughly with water and
immediately contact a doctor.
-
lways start by the positive terminal when connecting
the battery cables.
-
lways start by the negative terminal when
disconnecting the battery cables.
WARNING :
•
••
• Do not spill fuel or lubricant on the engine.
•
The fluids used for operation of the engine represent
a health hazard.

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English
Note: Modern diesel engines are precision machines
which require high quality fuel and lubricant.
Lubrication of Engine and Gearbox
Engine
- il pump lubrication system, pressure regulated by
discharge valve.
- il filter implementing throw-away cartridge
Transmission
See separate specifications
Filling with engine oil
The engine oil is poured through the port located on the
rocker gear cover by unscrewing the plug (for more
information, refer to the servicing section). Check the
oil level using the gauge.
Never fill with oil past the maximum mark.
Note: The oil qualities and quantities are indicated in
the technical characteristics table (given in appendix).
Fuel circuit
Composition
Main filter
Seawater / fuel cooler (if equipped)
Booster pump (if equipped)
Injection pump
High pressure injection tubes
Injectors
Fuel circuit purge
-Check the fuel level in the fuel tank.
- pen the fuel valve, then open the purge screw on the
upper part of the filter 20. Use the priming pump 13 to
pump. Close the screw when there are no more air
bubbles. In the event of total unpriming of the fuel
circuit, proceed as follows :
-Loosen the supply tube of injector No. 1 and turn the
engine using the starter until fuel appears. Close the nut
and proceed in the same way for the other injectors.
-Start the engine and check for any leaks.
ANGER: - o not smoke or bring any flame or
spark near the engine.
- Always sponge up any fuel spilled and throw away
any object which may contain hydrocarbons in an
appropriate location to protect the environment.
Cooling circuit
The cooling circuit comprises two different circuits: the
closed circuit with coolant and the open circuit with
seawater. The circuit may comprise a single circuit
only as in the case of a keel cooling configuration. This
is a specific installation which you can see on our
Internet site: www.nannidiesel.com
Closed circuit with coolant
This circuit comprises a pump driven by a crankshaft
through V-belt(s), a wat
er temperature exchanger (or an
exchanger body for a « keel cooling
» configuration),
and a thermostat-controlled valve.
Seawater circuit
This circuit comprises a pump, a freshwater/seawater
temperature exchanger, a supercharged air cooler (if
equipped),
a fuel cooler (if equipped), a gearbox oil
cooler (if equipped) and an exhaust elbow.
Coolant
Recommendations for first startup.
-Check the tightening of the drain plug 36
and open the
vent plug 31.
-Prepare a permanent anti-
freeze mixture with 50%
anti
freeze and 50% fresh water. The required quantity is
indicated in the table of technical specifications.
Pull the mixture into the filler hole 30
then close the vent
plug when the mixture appears. Continue filling up to the
maximum level. Possible top-ups
in the future should be
performed using fresh water only with the engine cold.
Start the engine and top up the level. Check for any
leaks.
Every two years, at the start of the season, fully drain the
cooling circuit, clean it with fresh water and fill it i
n
accordance with the above instructions (see
SILVERWAKE warranty conditions).
ANGER: -
The coolant must be filled with the
engine stopped and cold –
Do not smoke or bring a
flame near to this area.
-
Keep away from rotating components when the engine
is running.
CAUTION:
Never add pure antifreeze. Use of
additives or other types of coolants can result in
formation of insulating deposits and overheating of the
engine. Never use all-season, ready-to-use products.
Connection for hot water
An installation for heating the on-
board water can be
connected (contact your NANNIDIESEL agent).
Seawater filter
A water filter must be installed between the pump and
the seawater intake. This filter should be checked and
cleaned regularly.
CAUTION: Before starting up
the engine, check
that the seawater intake is open. The seawater pump
rotor can be damaged if run dry for only a few seconds.
After cleaning the seawater filter, carefully close the
cover to prevent the seawater pump from sucking in
air.
Note: The information concerning the electrical components and their wiring is given in appendix pA-10.

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5. OPERATING PRECAUTIONS
•Engine and fluid recommendations
To maintain your engine's mechanical qualities and extend its service life, we recommend that you observe the
following rules:
No
Rule etails
1 bserve the running-in
period: first 50 hours of
operation
A new engine is not ready to operate at its full capacity. Applying heavy loads
can reduce the engine's service life. The running-in period is intended to
gradually reduce the friction between the mechanical parts in motion, to smooth
and adapt the various parts to the contact surfaces.
2 Allow the engine to warm
up with no load
Allow the engine to warm up for 5 minutes to warm up the oil and facilitate
circulation of the oil in the engine block. Proper lubrication will limit wear of
the parts.
3 Select a fuel with a cetane
value>45
A fuel with a lower cetane value will result in poor combustion and may
generate startup errors and high amounts of smoke.
4 Empty the fuel tank Remove fuel precipitations. Do this the first time after 50 hours of operation,
then every 300 hours.
5 Use a quality lubricant A poor quality oil will adversely affect the engine in terms of wear of parts,
seizure, etc., and thus reduce its service life.
6 Use tap water for cooling A water which is too hard will result in scale deposits, decreasing the efficiency
of the cooling system. This could lead to seizure of the piston.
7 Use an antirust agent in the
cooling water
Corrosion in the closed cooling circuit will accelerate corrosion of the system
while decreasing the engine's service life and the cooling efficiency (the
recommended antifreeze contains the antirust agent).
8 Use antifreeze in accordance
with the climatic conditions
Antifreeze will lower the temperature at which the coolant will solidify and thus
prevent the engine from cracking.
If you do not use antifreeze under temperatures below 0°C, be sure to drain the
cooling water after each use.
9 Do not run the starter for
more than 15 seconds
perating the starter continuously for more than 15 seconds will result in
damage to the system.
As a general rule, be sure to always observe the maintenance and servicing guidelines.
Systematically perform the recommended checks.
•Regular checks to be performed:
For your safety, you should regularly check certain operating points.
For more details, refer to the chapter concerning servicing performed by owner (page 16).
To choose an oil in accordance with the climatic
conditions, refer to the table below

User manual
Page 13 sur 24
English
6. OPERATION
•Engine operation
Startup
Before turning the ignition keyswitch
-Check the fuel level
- pen the fuel supply valve
- pen the seawater intake valve
-Check the oil levels for the engine and gearbox
-Check the coolant level
-Close the breaker
-Check that the gearbox control lever is in the
neutral position
ANGER – Carefully close the engine cover and
install the protection devices before starting up the
engine.
-Turn the ignition keyswitch clockwise to the "on"
position: the oil alert and battery charge indicator lights
come on. Switch to preheating mode (if equipped). The
audible alarm sounds. The preheating system is
activated. Wait for the yellow lamp to go off then turn
the key clockwise to the "Start" position. Immediately
release the key once the engine has started.
The priming pump is used to fill the fuel circuit if dry,
to fill the fuel filter after it has been replaced, and to
prime the fuel circuit if the engine has not been run for
a certain period of time. To operate the priming pump,
turn the knob by 90 degrees counter-clockwise and
press as required. nce the operation is completed, turn
the knob to its initial position (90 degrees clockwise).
When the keyswitch is turned to the start position,
heating of the engine intake air is initiated and
continues for around 6 minutes with the engine running.
Take all the necessary precautions to avoid any contact
between a part of the body and the air heater area on the
engine (only on 6.420, T6 300 and Z6 300).
-Check the indicator lights and the other functions after
the engine has been started.
-Immediately stop the engine if an alarm sounds, if the
temperature rises abnormally or if one or several
indicator lights remain lit.
If the temperature increases abnormally or if one
or several indicator lights remain lit, correct the cause
before you restart the engine!
-Allow the engine to run at idle speed for 2 to 3
minutes.
-Check that the seawater is flowing through the exhaust
-If the engine does not start on the first try, repeat the
operation waiting 5 to 15 seconds between each try,
with the contact off.
IMPORTANT :
fter several unsuccessful tries to start the
engine,
search for the cause.
Do not continue to try as this could result in water
flowing back into the engine through the exhaust
system; close the seawater intake valve and try again.
Once the engine is started, re-open the valve.
WARNING: Never cut o
ff the electrical circuit
using the battery switch when the engine is running.
This could damage the alternator.
STOPPING THE ENGINE
-Place the lever in the idle/neutral position
-
Allow the engine to turn at idle speed for a few
minutes to stabilize the t
emperatures and the speed of
the turbocharger (if equipped).
-Never accelerate the engine before switching it off.
-Turn the keyswitch to the « » (vertical) position.
-
Close the battery switch, close the seawater intake
valve and the fuel supply valve.
IMPORTANT:
If the boat is towed, stop the
engine and close the seawater intake valve to avoid
accidental filling of the engine with seawater.
TWIN-ENGINE BOATS:
When sailing on a single
engine, close the seawater intake valve for the engine
which is shut
down. Do not forget to reopen it before
restarting this engine.
CAUTION –
Inspect the engine and engine
compartment for possible leaks.
RUNNING IN – WARRANTY INSPECTION
Running in
During the first 20 hours of operation, we recommend
that you use your e
ngine cautiously and that you only
take it up to its maximum rpm speed for short periods.
Never push the engine rpm speed too hard immediately
after starting without allowing the engine to warm up.
Warranty inspections
All the preventive maintenance operat
ions and their
frequencies are described in the SILVERWAKE. ®
Warranty book.
These inspections are required to validate the warranty.
The inspections must be ensured
by an approved
NANNI DIESEL representative.
All new engines are guarantied against defecti
ve parts
in accordance with the provisions of the
SILVERWAKE®
warranty book submitted to the
buyer when the engine is delivered.

User Manual
Page 14 sur 28
•Instrumentation
This section gives a complete list of the various
functional instruments and indicators at this time with
our marine engines. In the event of a change to the
instrument panels, we reserve the right to present the
new models in the appendices.
The instrument panels can contain all or part of the
following indicators.
Control indicators:
r with a Fly bridge instrumentation
The instruments illustrated are often safety
indicator lights; take your time to familiarize yourself
with these. Don't
hesitate to regularly check these
when running the engine.
Alert indicators:
1
2
3
4
10
5
6
7
8
9
11
12

User manual
Page 15 sur 24
English
No
Name Function Type
1 Tachometer
and hourmeter
Indicates engine rpm speed.
Do not push the engine to a high rpm speed when cold. e recommend sailing at a
cruise speed 200 rpm below the rated rpm speed.
The hourmeter records the engine operating hours.
2 Voltmeter Indicates battery voltage.
This meter reflects correct operation of the charging circuit and the alternator. In
normal use and after the startup period, the operating voltage is around 14V.
3 Engine oil
pressure
Indicates the pressure of the oil circulating in the engine.
This indicator does not indicate the quantity of oil in the engine!
perating pressure
Engine cold Engine hot
Idle Max. Idle Max.
Around 2 bars Around 4.5 bars Around 1 bar Around 3.5 bars
4 Coolant
temperature
Indicates engine coolant temperature.
In normal use and after the startup period, the temperature should be between 75
and 85 °C.
Signal analogique
5 Engine oil
pressure
Indicates oil pressure which is too low.
If the indicator light comes on with the engine turning, stop the engine immediately
and search for the cause. Contact a qualified technician.
6 Coolant
temperature
Indicates a coolant temperature which is too high.
If the indicator light comes on with the engine turning, stop the engine immediately
and search for the cause. Contact a qualified technician.
7 Preheating Indicator light comes on when diesel glow plugs are heating the combustion
chambers.
8 Battery charge Comes on when the ignition switch is on.
If the indicator light comes on with the engine running, this means there is a
charging fault in the alternator. Stop the engine immediately and search for the
cause. Contact a qualified technician.
9 Water present
in fuel filter
Indicates presence of water in the fuel filter.
If the indicator comes on, purge the filter.
Voyant/témoin
10 Key
or
ON switch
and
OFF switch
This is the switch in which the key is introduced for the ignition switch. Certain
models do not include the preheating position (heat) since it always takes place
automatically.
The switches respectively control starting and stopping of the engine. n «fly
bridge» instrumentation, they perform the engine starting and stopping functions
while being slaved to the main instrument panel equipped with a key.
11 Turbocharger
pressure
This alert indicator indicates that the air pressure in the turbocharger is too high.
Switch off the fuel supply. If the indicator light comes on regularly, contact a
qualified technician (common rail only).
12 Engine control This indicator light monitors the engine (common rail only)

User Manual
Page 16 sur 28
•Operating table
Startup procedure After startup In operation Stopping the boat and
engine
1. pen the hold
panel(s) to fully ventilate
the hold if not equipped
with a fan. If equipped
with a fan, operate the
hold fan for 5 minutes.
2. Check that your lever
is in the neutral position.
3. Check that the engine
mechanical stop lever is
in the « off » position (if
equipped).
4. Fully lower the base
(if equipped).
5. Prime the fuel
injection circuit if
necessary.
6. If your model is
equipped with a battery
switch, set it to the " N"
position.
7. pen the seawater
intake valve.
8. Set the ignition
keyswitch to " N" and
check that the lamps and
indicator lights come on;
trigger the preheating (if
equipped) then turn the
keyswitch to "Start" and
release.
n a "Fly" system: Push
the start button. Release
the button when the
engine starts up.
9. Check that the charge
and oil pressure indicator
lights go off once the
engine is started up.
10. Warm up the engine
at idle speed for a few
minutes.
Do not accelerate the
engine when starting it up.
1. Place the control lever
in the idle position and
allow the lever to move
into place.
2. Check the gauges and
indicator lights to monitor
correct operation of the
engine. If any
malfunction is observed,
stop the engine.
3. Check for any fuel,
water or fluid leaks,
tightness of the exhaust,
etc.
4. Check that the throttle
and gear change controls
operate freely.
•Check the gauges and
indicator lights to monitor
correct operation of the
engine.
•Check the seawater
outlet and the color of the
exhaust gases.
1. Place the control lever
in the neutral position.
2. Run the engine at idle
speed for a few minutes to
allow it to cool down
(between 45 and 60°C).
3. Turn the keyswitch to
the " FF" position.
n a "Fly" system: Engage
the stop button until the
motor stops completely.
Turn the keyswitch to the
" FF" position.
4. If your model is
equipped with a battery
switch, set the switch to
the " FF" position.
5. Close the seawater
intake valve.
Do not accelerate the
engine when stopping it.

User manual
Page 17 sur 24
English
7. SERVICING AN MAINTENANCE
•Work safety in engine compartment
CAUTION
The engine compartment is a dangerous area which
can be a source of burns, injuries and accidents:
always be careful!
o not forget to protect yourself with appropriate
equipment such as: gloves, protective goggles …
Never open the engine cover or perform any work
on the engine if you observe any water vapor or
coolant coming out of the engine: you could seriously
burn yourself.
Wait until the engine has fully cooled down and these
signs have stopped.
Always switch off the engine, remove the key from
the ignition switch and press the stop button.
Place the control lever in the neutral position.
Always work on the engine with the engine cold.
Keep children away from the engine.
Never open the coolant reservoir plug so long as
the engine is at operating temperature as the cooling
system will be pressurized.
Never pour any operating fluids on the engine;
these are flammable and the engine's high
temperature could cause these fluids to ignite and
cause a fire.
The engine has a dangerous electrical system.
Make sure you are familiar with all the rules and
instructions before intervening on the supply or on
the electrical equipment:
Never inspect the system when the engine is
running: electrocution hazard.
In operation, the engine outputs a low voltage; do
not touch conductive parts.
Electrical interventions should be performed by a
qualified technician. If any mistakes are make, this
could create an accident, or even a fire.
Avoid short-circuits in the electrical system,
especially at the battery.
If operations must be performed when the engine
is running, be careful with rotating parts, such as the
belt on the alternator.
For work performed on the fuel supply or the
electrical system, observe the following rules:
Always disconnect the battery from the engine.
o not smoke near the engine.
o not work near open flames.
Always have a fire extinguisher ready to use.
Keep away from all operating fluids. These are
poisonous for the skin. If accidentally projected into
the eye, rinse thoroughly immediately, and contact a
doctor, bringing the product recipient with you.
If you are performing operations in open sea, keep in
mind the following recommendations:
Swells and waves can cause you to loose your
balance.
The risk of spilling dangerous operating fluids is
thus increased.
Safety is sharpl
y decreased as medical help will be
more difficult to get to.
Limit to the maximum any operations performed at
sea as these sharply increase hazards and danger.
If topping up with an operating fluid, be sure not to
mistakenly use one fluid in place of ano
ther. This can
be a source of danger and can also result in damage
to your engine.
Regularly inspect the bottom of the
engine hold and keep it clean to more easily detect
tightening faults. If you notice any suspicious spots,
call a NANNI IN USTRIES After-
Sales Service
partner.

User Manual
Page 18 sur 28
•Servicing and maintenance tables
Servicing which can be performed by owner
To observe the warranty conditions, all the interventions must be performed by a specialized technician
approved by NANNI IN USTRIES. However, certain regular checks (to be performed "on each use") can
only be performed by the owner. When the warranty has expired, an experienced owner may be able to
perform certain basic operations.
These checks must be taken into account during overhauls performed by the engine specialists.
Phase Operation Type
(C/A/R)
Frequency Component
Battery charge indicator light C n each use
Instrument panel: alerts and alarms
C n each use
Electrical system
Fuel prefilter: draining of water C/A n each use Fuel supply
Oil level (engine, transmission and
power steering)
C/A n each use Lubrication
Seawater filter (clean if necessary) C/A n each use
Level of coolant C/A n each use
Cooling
General tightness C n each use Engine block
Regular checks
before and after use
Stuffing box (if braided type) C/A n each use Engine shaft/boat
tightness
Check level of electrolyte C/A Every 15 days
Alternator belt C/A Every 20 hours
Electrical system
Zinc anode C/R Every 20 h, then
every 100 h or once
yearly
Exhaust
Regular checks
Control unit: inspect
accelerator/gearbox and trolling
cables, general lubrication
C Every 20 h, then
every 100 h or once
yearly
Concerning the servicing table and the "operation details", the information given in italics is only valid
for certain types of engines. Refer to the specific servicing table given in appendix A-3 for the specific list of
operations concerning your engine.

User manual
Page 19 sur 24
English
Maintenance performed by dealer
Operation Type
(C/A/N/
R)
Frequency Component
Fuel filter R After 20 h then every
100h or once yearly
Fuel supply
Zinc anode C/R After 20 h then every
100h or once yearly
Cooling
Control unit: inspection of accelerator / gearbox and
trolling cables, general lubrication
C After 20 h then every
100h or once yearly
Tension of belts C After 20 h then every
100h or once yearly
Tightening of screws and clamps C/A After 20 h then every
100h or once yearly
Engine block
Check of battery C After 20 h then every
200h or once yearly
Attachment of starter and alternator C/A After 20 h then every
200h or once yearly
Electrical system
ir filter (cleaning or replacement) C/N/R After 20 h then every
200h or once yearly
Fuel prefilter (cartridge) R After 20 h then every
200h or once yearly
Fuel supply
Engine oil change and replacement of filter R After 20 h then every
200h or once yearly
Cleaning of gearbox oil filter N/R After 20 h then every
200h or once yearly
Lubrication
Replacement of seawater pump rotor R After 20 h then every
200h or once yearly
Cooling
Cleaning and protection of engine C/A/N nce yearly
Attachment of engine, suspensions and alignment C/A After 20 h then every
200h or once yearly
Engine block
Adjustment of valve clearances C/A Every 400h or every
two years
Replacement of injector nozzles (indirect injection)
Replacement of injectors (direct injection)
R Every 400h or every
two years
Calibration of injectors C/A/R Every 400h or every
two years
Turbocharger: cleaning and inspection C/N Every 400h or every
two years
Timing belt R Every 400h or every
two years
Fuel supply
Coolant change R Every 1000h or every
two years
Rinsing of cooling circuit N Every two years
Exchanger manifold: cleaning and inspection
Or cleaning of keel cooling unit
C/N Every 400h or every
two years
ir cooler manifold: inspection and cleaning C/N Every 400h or every
two years
Gearbox oil cooler manifold: cleaning C/N Every 400h or every
two years
Thermostat R Every 400h or every
two years
Temperature exchanger calibrated plug R Every 400h or every
two years
Cooling
Gearbox (refer to manual specific to this component)

User Manual
Page 20 sur 28
Logbook
Year ate of last
100 hour inspection
ate of last
200 hour inspection
ate of last
400 hour inspection
1
st
year
2
nd
year
3
rd
year
4
th
year
5
th
year
6
th
year
7
th
year
8
th
year
9
th
year
10
th
year
The 200 hour overhauls include the operations specific to those performed at 100 hours.
The 400 hour overhauls include the operations specific to those performed at 100 hours and 200 hours.

User manual
Page 21 sur 24
English
•For detailed operations, see pA-4 and pA-5.
D NGER: To avoid physical injury, stop the
engine, allow it to cool, and open the breaker prior to
any intervention.
bserve the rules relative to safety and protection of the
environment.
-These recommendations are mandatory.
Complying with these recommendations will extend the
service life of your engine and will ensure normal
application of the warranty provided with your engine.
-Do not make any unauthorized changes to your
engine.
-Damages produced by use of unauthorized spare parts
are not covered by the warranty.
-Servicing interventions and operations must be
performed in a workshop approved by N NNI
DIESEL.
If the engine is used for a number of hours which is less
than the number of hours indicated, servicing should be
performed on a yearly basis.
In this case, we recommend that the servicing operations
be performed prior to wintering. The engine will thus be
protected by a new and clean lubrication oil. This does
not dispense with the requirement to perform the
wintering operations detailed in the SILVERWAKE
warranty.
Servicing which can be performed by the owner
Checks :
Concerning the daily checks performed on the
instrument panel, refer to the instrumentation section
(p12-13) of the chapter covering operation.
•Fuel prefilter: draining of water
•Oil level (engine, transmission and power
steering)
•Seawater filter (clean if necessary)
•Level of coolant
•General tightness
•Stuffing box (if braided type)
•Check of electrolyte level
•Alternator belt
•Zinc anode
•Control unit: inspection of
accelerator/gearbox and trolling cables, general
lubrication
Fuel prefilter: draining of water
Absolute cleanliness is required when working on
the fuel cir
cuit since the injection pump and the
injectors have very low tolerances. Even minute
particles of dust or dirt, or very small quantities of
water, can interfere with operation of the fuel
supply.
Perform this operation with the engine cold and
stopped.
The fuel prefilter is an optional equipment
Check that the fuel prefilter does not contain any water.
If it contains water, place a tray under the fuel prefilter.
Drain the water and impurities using the plug/valve at
the bottom of the filter bowl.
Purge the fuel circuit.
This should also be performed when the fuel circuit has
dried or when a portion has been drained.
Loosen the purge screw on the fuel filter bracket.
Actuate the priming pump 13 (
if equipped). Unlock the
hand pump 12 and press the button repe
atedly until
bubble-
free fuel flows out at the purge screw. Tighten
the purge screw and lock the hand pump.
Oil level (engine, transmission and power steering).
See page A-4.
The oil checks must always be performed with the
engine stopped and cold. Be
careful, these fluids are
flammable. Do not smoke in the vicinity of these fluids
and do not allow for any sparks or flame in the
vicinity.
Engine casing oil: remove the gauge 26
, wipe off the
gauge and reinstall it in the gauge tube.
Pull out the gauge a
gain and check the oil level. It
should be located between the min. and max. positions
on the gauge. If necessary, top up the oil level: open the
air filler port 24
, pour the recommended oil (see
technical characteristics in appendices) to reach the
max. l
evel indicated on the gauge without exceeding the
max. level. Close the oil filler port.
Transmission oil:
refer to the documentation relative to
the transmission for this check.
Power steering (Z transmission only):
This check must
be performed with the e
ngine stopped and cold, and
with the base in the horizontal position. pen the
hydraulic oil tank and check the oil level using the
gauge. It should be located between the min. and max.
indicators. If this is not the case, top up with the
recommended fluid
(see technical characteristics in
appendices).
If the oil is not visible in the tank, contact your
N NNI INDUSTRIES-approved dealer.

User Manual
Page 22 sur 28
Seawater filter (clean if necessary)
Close the seawater intake valve (if equipped)
before cleaning the seawater filter.
With the engine stopped, visually inspect the seawater
filter 35. Check that it is not obstructed by any mineral
or organic deposit. If necessary, dismantle the filter in
order to clean it.
Remove the cover. Remove the filter. Clean the housing
of any debris which it may contain. Rinse the filter and
housing with fresh water. Check the condition of the
seal (tightness). Reassemble and check, with engine
running, for leaks and/or air in the circuit.
Coolant level (page A-4)
Do not remove the plug from the heat exchanger
reservoir when the engine is hot. If the coolant is
pressurized, it can gush out and cause serious burns.
Perform these checks with the engine stopped.
Turn the filler plug 30 up to its first stop to allow the
pressure in the system to escape before removing the
plug. Inspect the fluid level. The level should be
between the lower edge of the filler neck and the level
pin (if equipped), respectively representing the
minimum and maximum level in the expansion
chamber. Top up if necessary using a fluid comprising
50% water and 50% antifreeze. The engine has another
filling port 31. Top up with coolant in the same way as
this port.
When filling the cooling system, the coolant level
must be checked after 10 minutes of use since the
system purges itself automatically. Top up if necessary.
General tightness
Regularly perform a visual inspection of the engine and
its compartment before starting it up and after using it.
This check will allow you to quickly identify any
tightness faults.
Be especially careful with respect to operating fluid
leaks: oil, fuel and coolant. Inspect the attaching parts
(if loose, perform any necessary tightening), and inspect
the couplings and hoses.
ccumulated fuel, oil or grease residues on the
engine and in the engine compartment can represent a
source of fire. Clean these as quickly as possible.
Do not throw these waste products into the
sea; this cleaning operation should be performed in an
appropriate port area.
Stuffing box (if braided type)
If your boat is equipped with a braided-
type stuffing
box, check the system's tightness.
This system is not perfectly tight, so it is perfectly
normal that you observe a slight amount of water
coming in. Correct operation is characterized by a drop-
by-
drop water intake. If the water comes in as a small
run, this means the water intake is
too great and you
should contact your NANNI INDUSTRIES-
approved
dealer.
Check of electrolyte level
Never bring a flame near to the battery or check
the battery using a "spark" since the gases are
flammable and explosive. The battery electrolyte is
high
ly corrosive. If the acid comes into contact with
your skin, wash your skin immediately with soapy
water. If projected into the eyes
rinse thoroughly with
water and immediately contact a doctor.
Do not short-circuit the battery.
-The electrolyte density m
ust be between 1.270 and
1.285 (measure taken using a hydrometer).
-
The electrolyte level should be checked periodically.
The level should be maintained at 1 cm above the plates.
nly add distilled water, if necessary.
Cleaning
The batteries must remain c
lean and dry. xidation or
dirt on the battery or battery terminals 6
can result in
short-
circuits, voltage drops and discharging,
particularly in humid weather. Clean the battery
terminals and the cables using a brass brush to remove
any oxidation. Carefu
lly tighten the cable terminals and
lubricate them with appropriate grease.
RECOMMEN ATIONS
To ensure perfect operation of the alternator and built-
in
regulator, Never :
-
Switch off the main battery switch of the circuit with
the engine running (this ca
n result in destruction of the
regulator).
-
Reverse the battery terminals. The terminals are
respectively marked + (positive) and – (negative);
the
negative terminal is connected to ground. The cable
terminations and the cables must be correctly secured.
-Disconnect the battery.
To use several batteries, install a load distributor
(contact a NANNIDIESEL representative).