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Nanni N2.10, Operator'S Manual

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Nanni N2.10 Operator'S Manual Download Page 55

Alternator belt 

I

 DANGER  

Stop the engine and remove the 
key before servicing the alterna-
tor belt.

Always keep a replacement belt 
on-board. 

The alternator belt drives both the 
coolant pump and the alternator. 
Additional belt can also be fitted. 

A loosen or damaged belt can 
result in overheats or insufficient 
alternator charging. A belt that is 
too tight can damage the bearings 
in the pump and the alternator. 

Visually check the belt for exces-
sive wear, frayed cords, etc. If any 
defect has been found, change the 
belt. Check that it fits properly in 
the pulley. 

Also check its tension. The deflec-
tion must be of between 8 to 10 
mm when pressing the belt with the 
hand between two pulley when the 
belt is warm. 

To adjust the belt tension: 

  

   

1. 

Stop the engine and remove 

the key from the panel. 

2. 

Loosen the alternator mounting 

bolt 

 and pull the alternator out 

until to adjust the deflection of the 
belt. 

3. 

Tighten the alternator mounting 

bolt. 

4. 

Check the tension after few 

hours of operation. 

53

Summary of Contents for N2.10

Page 1: ...Nanni marine engine Operator s manual Engines N2 10 N2 14 N3 21 ...

Page 2: ...in components 15 Instruments panel 19 Standard panel 19 Instrumentation 20 Operation 25 Before starting 25 Starting the engine 26 During operation 28 Stopping the engine 30 Maintenance 32 Service schedule 33 General inspection 35 Fuel system 37 Lubrication system 41 Cooling system 43 Raw water system 47 Electrical system 53 Battery 52 Corrosion protection 54 Long term storage 57 Troubleshooting 59...

Page 3: ...ith precise specifications and strict production methods Before operating the engine make sure that this manual is applicable to the engine Refer to the Identification plate if you are not sure about the engine model designation If you don t have the correct manual please contact your Nanni authorized Dealer Correct installation of the engine on your boat is of the greatest importance for safe nav...

Page 4: ...ument the following symbols are used to ease the reading Indicates that the text is conti nued on the following page Indicates the end of a section Content and updates All the informations and specifica tions in this Manual are based on the technical data applicable at the time of its publication Changes and updates may be made by Nanni without notice Illustrations are intended as a general guide ...

Page 5: ...can order an emergency kit from any Nanni authorized dealer The engine emergency kit contains several components to carry out simple repair in the event of a fault Always have an complete emer gency kit onboard and necessary tools to carry out any repairs Safety alert symbols General rules of safety precautions to follow are indicated in this Ma nual They are indicated as follows I DANGER Indicate...

Page 6: ... to follow before handling the engine Indicates possible electrical hazards This icon indicates a risk of fire Indicates hot parts entailing substantial risks of burns Indicates an area containing pressurised fluids Stipulates that no flames or sparks should be created in the vicinity Indicates hazardous rotating parts Indicates the de aeration orifice s air bleed Indicates where to check the cool...

Page 7: ... gets very hot the exhaust system tur bocompressor if equipped starter oil sump oil coolant in the hoses and pipes are hot and can burn Fluids ejected under pressure can cause serious injury Release all the pressure in the circuits before removing the caps Never open the oil circuit and coolant caps when the engine is operational and or hot Never start or run the engine when the oil fill and coola...

Page 8: ...Ensure you always have an appropriate working fire extinguisher to hand Hazardous Voltage Electrical Shock Electrocution is possible whenever electricity is present Hazardous voltage can cause severe injury or death Operate the engine only when all guards and electrical en closures are in place Open the main circuit breakers of all power sources before servi cing the equipment Configure the instal...

Page 9: ...n which could ignite or explode on contact with an electrical arc or a flame Switch off all electrical appliances in the vicinity when you are working on the batteries Ventilate correctly storage batteries compartment Avoid touching the battery terminals with metal tools so that no sparks are created which could cause an explosion Remove the rings bracelets and necklaces before handing the batteri...

Page 10: ...ng for possible leaks Water ingress The engine should be protected against from water ingress by any means Water ingress leads to complete engine failure This is not cover under any warranty terms Water can enter the engine after filling the exhaust system Correct installation of the engine on your boat is of the greatest impor tance for safe navigation and pro tection of the environment The first...

Page 11: ...50 hours of operation Do not race the engine while it is cold Do not operate it at full load except for short periods Never run the engine at constant engine speed for long periods during the break in period Check the oil and coolant level frequently during the running in period The oil consumption can be more important during the running in period Engine installation The installation must be carr...

Page 12: ...e operation of the remote control Power Take Off Some engines can be fit with a Power Take Off system This sys tem allows to power accessories like bilge pump watermaker etc NOTICE Any mechanical power taken from the engine from a PTO reduces the power delivered to the propeller The use of a PTO should always be studied and approved by the R D department of Nanni Industries S A S France Contact yo...

Page 13: ... fuel has a lower BTU heat content rating Check the grade of fuel being used before troubleshooting for low power com plaints in cold weather operation In all cases fuel quality and fuel sulfur content must comply with all existing emissions regulation for the area in which the engine operates Oil viscosity Use seasonal grade viscosity engine oil based on the expected air temperature range between...

Page 14: ...nstructions stated in the relevant manuals should be follow by the user Nanni s responsibility for the engine specification being in accordance with the certification will be invali date if one or several of this condi tions are not followed Environmental responsibility Nanni designs its engines to have minimum environmental impact This objective however can only be achieved with your full coopera...

Page 15: ...A S Any modification will void the War ranty Damage caused by failure to follow operation instructions or incorrect operation is also not cove red by the warranty Commissioning inspection Commissioning inspection is a condition of the validity of the Limi ted Warranty Moreover it allows the registration of the product at the factory and record important infor mations regarding the product By regis...

Page 16: ...o practice controlling the boat at slow speed as a first step Avoid violent manoeuvres or unexpected speed changes while sailing People can fall over or overboard Keep also in mind that the weight distribution passengers equip ments etc inside the boat has an impact on the behaviour of the boat when cruising Depending the position of the load the behaviour of the boat may change particularly in th...

Page 17: ...N COMPONENTS 1 Alternator 2 Alternator belt 3 Starter 4 Fuses box 5 Air filter 6 Fuel filter 7 Fuel feed pump 8 Fuel injection pump 9 Heat exchanger 10 Coolant filler plug 11 Coolant pump 12 Recovery tank 13 Coolant drain plug 14 Raw water pump 15 Oil filter 16 Oil filler port 17 Oil gauge 18 Water cooled exhaust elbow 19 Transmission 15 ...

Page 18: ...N2 10 16 1 5 2 3 11 13 14 15 12 16 18 7 17 8 9 10 4 6 19 ...

Page 19: ...N2 14 17 1 5 2 3 6 11 13 14 15 12 16 18 7 17 19 8 9 10 4 ...

Page 20: ...N3 21 18 1 5 2 3 6 15 18 7 8 9 10 4 11 12 13 14 16 17 19 ...

Page 21: ...t the warning lamps and the instruments can be installed separately without the panel shown here On some boats a panel without key is used as an additional instrument panel in Flying Bridge position A main panel fitted with a key switch generally located in the wheel house is used to prevent unautho rized starting from the additional panel To start the engine using the additional panel the key of ...

Page 22: ...hows the operating time of the engine in hours When the system voltage is connected the display indicates the voltage at the battery terminals Starter switch The starter switch allows to start and stop the engine The ON STOP switch allows to connect the system voltage and to stop the engine The START button allows to pre heat the engine and engage the starter NOTICE As standard the en gine model N...

Page 23: ...If the oil pressure in the lubrication circuit is too low the acoustic alarm sounds and the corresponding war ning lamp comes on Coolant temperature indicator Indicates the coolant temperature in Celsius and in Fahrenheit degrees If the coolant temperature is too high the acoustic alarm sounds and the corresponding warning lamp comes on 21 ...

Page 24: ... high can lead to severe engine damage Do not operate the engine if the problem persists and contact a Nanni workshop as soon as possible BATTERY CHARGE This warning lamp comes on when the system voltage is connected If this lamp lights up when the engine is running it indicates that the alternator of the engine is not charging The cause can be a fault in the electrical system or because the alter...

Page 25: ... oil filter condi tion Operate the engine when the oil pressure is too low can lead to severe engine damage Do not operate the engine if the pro blem persist and contact a Nanni workshop as soon as possible WATER IN FUEL FILTER This lamp lights up and the alarm sounds when there is too much water in the fuel filter of the engine not applicable on some engines If this alarm comes on stop the engine...

Page 26: ...Note 24 ...

Page 27: ...ater system if neces sary 2 Start the compartment fan if fitted for at least five minutes Otherwise open the hold 3 Check that there is sufficient fuel 4 Move the control lever to the neutral position 5 Open fuel cock prime the sys tem if necessary 6 Check the engine and trans mission oil level and fill with the recommended oil if necessary 7 Check the coolant level top up if necessary 8 Check the...

Page 28: ...s NOTICE When starting the engine for the first time let it run at idle for several minutes and check for leaks or malfunction Starting using booster batteries I CAUTION Make sure to use batteries with the same rated voltage as the engine s system voltage 1 Connect the jumper cable to the positive pole of the flat battery then to the positive pole of the booster battery 2 Connect the jumper cable ...

Page 29: ...aust outlet at the hull If the water does not flow stop the engine and check the raw water system Panel without key 1 Switch the key of the main pa nel to ignition if equipped 2 Move the control lever to the neutral position 3 Push the manual stop control if fitted 4 Press the ON STOP button All the warning lamps come on and the acoustic alarm sounds After a few seconds only the ENGINE OIL PRESSUR...

Page 30: ...il consumption Deposits may also form in the in jection system if the engine do not reach its nominal operating tempe rature regularly Run the engine at full throttle regularly in order to burn off any possible deposits in the fuel system Manoeuvring I WARNING Shifting at high speed can da mage both the engine and the transmission and be dangerous for passengers I CAUTION On a twin engine boat bot...

Page 31: ... lever in neutral the propeller rotate and create lower hydrodynamic resistance than in astern I CAUTION Sailing with the engine stop ped and the lever in neutral must not exceed 6 to 7 hours in a row The propeller can drive the rota tion of the shaft and damage the transmission Run the engine for 15 minutes to lubricate the trans mission at least every 6 hours Whatever the type of propeller and t...

Page 32: ...tops and all indica tors turn off The engine stops all lamps go out For panel without key press the ON STOP button and release it The engine stops Turn the key of the maon panel counter clockwise All indicators turn off I CAUTION Even after the engine has stopped some components and fluids remain hot and pressuri sed for several minutes As far as possible limit work on the en gine immediately afte...

Page 33: ...anodes Furthermore when the boat is at anchor or in port for extended period water can fill the exhaust system via the exhaust outlet It is necessary to drain regularly the wa terlock when the boat is at anchor Storage If the boat is being left in the water while not in use for few weeks the engine must be controlled and run few minutes every 10 days If the boat will not be used for more than 2 mo...

Page 34: ...owever some regular checks particularly those made each time the engine is used can only be carried out by the user Few other operations are explained further on so that you can work on the engine in an emergency or if there is no repair centre nearby We recommend to have all your works checked by a Nanni autho rized workshop Independent repair and adjust ment work on the engine beyond a limited s...

Page 35: ...ary Check the raw water filter and clean as necessary Drain water from the fuel prefilter Check the condition of the battery Check the warning lamps of the instrument panel Control and adjust general water tightness Check the stuffing box condition EVERY 100 OPERATING HOURS AT LEAST EVERY YEAR Clean the air filter Change if needed Change the fuel filter Check the condition and the tension of the b...

Page 36: ...aintwork as necessary EVERY 400 OPERATING HOURS AT LEAST EVERY 2 YEARS Change the thermostat of the heat exchanger Change the heat exchanger filler plug Drain and change the coolant Clean the coolant system Check and clean the heat exchanger tube stack Change the O ring Check and clean the air cooler tube stack Change the O ring Check and clean the transmission oil cooler tube stack Check the fuel...

Page 37: ... necessary If any defect appears rust crack etc the control cable must be changed Stuffing box I DANGER A stuffing box lubricated with raw water taken from the engine cooling system must never be installed on a Sail boat or when the exhaust elbow is below the waterline A separated water supply or a stuffing box lubrica ted by grease must be used on all Sail boat or when the exhaust elbow is below ...

Page 38: ...hese operations when the engine is stopped and cold Make sure that no dust or dirt enter the intake manifold The air filter reduces the level of noise made by the air intake and prevent particles from penetrating the intake manifold The reliability and the performances of the engine depend among other things on the quantity and the tem perature of the intake air To check the air filter 1 Remove th...

Page 39: ...e 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 s...

Page 40: ...n the fuel injection system If the boat is not used for an ex tended period fill the tank to the maximum level Fuel prefilter The fuel prefilter is an optional ex tra not in the scope of supply of the engine The model of prefilter can vary according the boat NOTICE Drain the water in the prefilter several hours after the engine has been stopped 1 Close the fuel cock on the fuel tank 2 Place a cont...

Page 41: ...dicating the direction of fuel flow Reconnect the pipes to the fuel filter 6 Remove the clamps from the hoses 7 Open the fuel cock and bleed the air in the fuel system ENGINE MODEL N2 14 N3 21 N2 14 N3 21 1 Close the fuel cock Clean the filter bracket 2 Put a plastic bag over the filter to prevent leakage on the engine 3 Remove the fuel filter Use a filter wrench if needed 4 Check and clean the se...

Page 42: ...e turn the crankshaft a fraction of a turn 4 Continue pumping and at the same time tighten the venting screw 5 Pump few other times to prime the system To bleed the fuel system IF IT IS FITTED WITH AN ADDITIONAL ELECTRIC FUEL FEED PUMP 1 Fill totally the fuel tank Open the fuel cock 2 Loose the venting screw Use rags around the venting screw 3 Start the engine for 5 to 10 se conds to let the elect...

Page 43: ... climatic conditions Oil level Adding engine oil Check the engine and transmission oil level before starting the engine Always make sure that the level is in the safe range The oil level should be within the range indicated on the dipstick between the Mini and Max level To check the oil level 1 Remove and wipe the dipstick 2 Re insert and remove the dipstick Check that the oil level is between the...

Page 44: ...pstick Changing the oil filter Change the oil filter each time the engine oil is drained 1 Remove the oil filter with a filter wrench Remove the gasket 2 Clean the mating surface in order to prevent impurities from entering the engine 3 Apply a film of oil on the new gasket Screw the new filter by hand with the new gasket When the gasket contacts the mating surface turn the filter a half turn 4 Fi...

Page 45: ...ooled by heat exchange with raw water taken from a sea cock A Keel Cooling system can also be used to cool the coolant instead A thermostat maintains the coolant at a proper and constant opera ting temperature With thermostat control the coolant only enter the heat exchanger when the engine reach a certain temperature I CAUTION Engines with heat exchanger are not suitable for a Keel Coo ling syste...

Page 46: ... poor content of corrosion preventive The content further becomes less potent with the dilution of water Choose additive that will not have any adverse effects on the mate rials of the cooling system Never mix different additive as it may cause chemical reactions and the refore malfunctions WATER BOILER A water boiler can be connected to the engine coolant circuit If the boiler is located above th...

Page 47: ...filler cap 6 Check the coolant level in the recovery tank if fitted It should lie between the Min and Max mark of the recovery tank Add clean water if necessary NOTICE The Min and Max level indicated on the recovery tank if fitted does not indicate the correct level of coolant Draining the coolant circuit 1 Stop the engine and remove the key from the panel 2 Put a container under the heat exchange...

Page 48: ...oolant capacity must be adapted according to the pipes length and the tank capacity To fill the coolant system 1 Remove the vent plugs and 2 Remove the coolant filler cap and fill the exchanger with coo lant 3 Replace the vent plugs when coolant runs out from the drain openings 4 Fill the exchanger with coolant to the correct level 5 Replace the coolant filler plug and add coolant in the recovery ...

Page 49: ...lant heat is dissipated by pas sing through tubes incorporated to the hull NOTICE If there s any risk of frost raw water system should be drained Siphon breaker I DANGER Close the sea cock before any operation on the siphon breaker NOTICE The use of a siphon breaker is mandatory if the exhaust elbow is under the waterline at full load or at less than 200 mm above it A siphon breaker is mandatory i...

Page 50: ...e correct position in case of reins tallation 5 Carefully remove the impeller using an extractor 6 Inspect the impeller Check for damaged cracked broken mis sing or flattened vanes Change the impeller if it is damaged Clean and drain the raw water system if parts of the impeller are missing 7 Inspect the cover and the gasket for corrosion or damage Change it if they are damaged 8 Lubricate the ins...

Page 51: ...l the components and open the sea cock Start the engine and check for leaks NOTICE When the boat is out of water check that the through hull is not obstructed by mud or algae Raw water system Draining I WARNING It is highly recommended to carry out these operations when the boat is laid up on land If the boat cannot be removed from the water close the sea cock and prevent water entry by any means ...

Page 52: ... vicinity of the engine the propel ler and the exhaust outlet Put the lever in neutral and start the engine 5 Let the engine run few minutes at idle Add fresh water in the container if necessary 6 Stop the engine 7 Fill the container with engine coolant mix 50 clean water 50 anti freeze 8 Start the engine and let it run at idle Add enough coolant to fill the raw water system with coolant 9 Stop th...

Page 53: ...ppears Tighten the cable terminals and lubricate them with appropriate grease Fuses The engine electrical system is protected from electrical overload damage by fuses If the electrical system does not work the engine does not start or the instruments panel don t ope rate a fuse may have trip Investigate the cause before reset ting the fuse Always have spare fuses on board Replace a blown fuse with...

Page 54: ...TIVE TERMINAL of the battery and then the NEGATIVE Use distilled water to top up the electrolyte level Follow in priority the battery manufacturer instruc tions for topping up If the battery electrolyte level is not adjustable maintenance free battery type do not use or charge the battery if the fluid level stands below the lower limit level When adding electrolyte unscrew the vent plugs but leave...

Page 55: ...d the alternator Visually check the belt for exces sive wear frayed cords etc If any defect has been found change the belt Check that it fits properly in the pulley Also check its tension The deflec tion must be of between 8 to 10 mm when pressing the belt with the hand between two pulley when the belt is warm To adjust the belt tension 1 Stop the engine and remove the key from the panel 2 Loosen ...

Page 56: ...rature 25 C When cruising at high speed or when there s a strong current Important relation difference between the cathode and anodic surfaces Anodes in magnesium or zinc are generally used to protect the boat against galvanic corrosion Due to their intrinsic nature these anodes will wear down in place of other metallic components During the first year of use check the anodes deterioration every 3...

Page 57: ...nected to shore power the protector ground must never be in the boat Shore power should always have a ground fault circuit beaker Shore power units must be in tended for marine usage All equipment fitted with a protec tive ground terminal the engine along with the anodes must be connected to the common ground of the boat I DANGER For engine with a two pole electrical system the negative pole of th...

Page 58: ...n the engine is stopped and cold 1 Remove the key from the panel 2 Close the sea cock 3 Drain the raw water system 4 Remove the set formed by a cap a seal and the anode 5 Remove the deposits from the surface of the anode using glass paper before determining the level of erosion Do not use a soft steel brush as this could leave deposits that are likely to speed up corrosion 6 If more than 50 of the...

Page 59: ... by any means that there is no coo lant in the engine Long term storage procedure Complete the nearest periodic maintenance inspections and ope rations before performing the long term storage procedure 1 Drain and change the engine and transmission oil 2 Change the engine oil filter 3 Change the fuel filter and pre filter 4 Run the engine to normal ope rating temperature 5 Stop the engine and take...

Page 60: ...s condition 2 Drain and change the engine and transmission oil 3 Change oil filters 4 Drain the coolant from the seawater system 5 Check the condition of the raw water pump impeller Change it if needed Install the impeller 6 Remove cloth and tape from openings Install the air filter 7 Close Tighten all plugs and drain cocks 8 Check the condition of hoses and clamps 9 Check the engine coolant level...

Page 61: ...motor turns but the engine does not start 1 2 3 4 5 6 7 The engine does not reach its rated speed at wide open throttle 2 3 4 5 6 7 12 14 15 16 17 26 28 The engine operate unevenly 1 2 3 4 5 6 7 14 15 16 17 18 19 20 24 28 The engine vibrates a lot 16 27 Black exhaust smoke 4 5 14 15 16 19 20 28 White exhaust smoke 4 5 23 25 High fuel consumption 4 7 14 15 16 19 20 22 28 The engine overheats coolan...

Page 62: ... in neutral Stop control pulled out 14 Too much load on board 15 Fouling on underwater hull drive or propeller 16 Defective incorrect propeller 17 Faulty operation of control lever control cables 18 Loosen or damaged belt 19 Incorrect coolant Low coolant level Coolant leaks 20 Cooling system does not operate correctly 21 Faulty thermostat 22 Sea cock valve closed Raw water filter clogged 23 Lube o...

Page 63: ...l Compression ratio 23 5 1 Idle speed clutch disengaged rpm 1050 1050 1050 Rated engine speed Max power rpm 3000 3600 3600 Max RPM at wide open throttle rpm 3220 3820 3820 Recommended cruising speed rpm 2400 2700 2880 3240 2880 3240 Weight without gearbox kg 78 83 97 Valve clearance engine cold in take mm 0 145 0 185 Valve clearance engine cold ex haust mm 0 145 0 185 Direction of rotation view fr...

Page 64: ...ide open throttle 265 285 285 Fuel requirements EN 590 ASTM D975 No 2 D Never use fuels that have sulfur content greater than 1 0 LUBRICATION SYSTEM Oil quality API CF mini Oil viscosity temperate climate SAE 15W40 Engine oil capacity no engine incli nation litre 2 1 2 1 3 3 Min oil pressure at rated rpm bar 3 5 3 5 3 5 COOLING SYSTEM Coolant capacity no engine inclina tion litres 2 7 2 7 4 Coolan...

Page 65: ...63 Note ...

Page 66: ......

Page 67: ...ANNI INDUSTRIES SAS 11 Avenue Mariotte Zone Industrielle 33260 La Teste France Tel 33 0 5 56 22 30 60 Fax 33 0 5 56 22 30 79 Email contact nannidiesel com www nannidiesel com P N DOCGBTC09100 082013 IndA ...

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