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Summary of Contents for Nanni N13.700 CR3 HD
- Page 1 NANNI MARINE ENGINE USER MANUAL DGBXXT09018C ENGINES N13.700 CR3 HD N13.700 CR3 N13.750 CR3 N13.800 CR3 N13.900 CR3 N13.930 CR3...
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Page 3: Q00 Tracked Changes
TRACKED CHANGES TRACKED CHANGES CODE INDEX DATE INITIALS NATURE OF TRANSLATIONS PAGES DGBXXT09018 03/2020 Create DGBXXT09018 05/2022 Maintenance tables 61-62 DGBXXT09018 09/2023 General update DGBXXT09018 04/2024 Maintenance tables 54 - 55 Please note all changes and pages associated. For further clarity, please add a line in front of each change. - Page 4 NOTES...
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Page 5: Table Of Contents
SUMMARY Q00 TRACKED CHANGES Oil grade denomination TRACKED CHANGES Oil grade labels S00 SUMMARY Oil analysis S01 INTRODUCTION FUELS INTRODUCTION Diesel fuel ABOUT THIS MANUAL Permitted sulphur content in diesel Contents & updates Temperature dependence of diesel S02 SAFETY Biodiesel (FAME) SAFETY SIGNALS Maintenance interval A signal word... - Page 6 SUMMARY Manoeuvring Electrolyte level check Trolling valve MISCELLANEOUS AFTER RUNNING Drive belt Stopping the engine Checking for leaks After stopping the engine Checking and adjusting the valve clearance Anchoring S09 STORAGE Cold weather precautions LONG TERM STORAGE S08 MAINTENANCE Long term storage procedure ABOUT Restarting the engine GENERALITIES...
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Page 7: S01 Introduction
Record the motor serial numbers and option codes (if applicable). Your Nanni agent also needs these numbers when ordering parts. File the identification numbers in a secure place. Some engine accessories, such as air filters and some instruments, are optional. -
Page 8: About This Manual
Please make sure this manual is always in the boat. It rized NANNI dealer will be happy to inform you of must always be accessible to anyone using the engine, the correct maintenance and operating procedures. -
Page 9: S02 Safety Safety Signals
SAFETY S02 SAFETY SAFETY SIGNALS A signal word Engine - Genset safety Icons SAFETY PRECAUTIONS Hot exhaust precautions Work In ventilated area Waste disposal Unwanted engine start Safe maintenance practice Work In clean area Protective clothing Service engines safely Proper use of tools Support engines properly Safe illuminated work area Proper lifting equipment... -
Page 10: A Signal Word
If you do not understand any part of this Replace missing or damaged safety signs. There can document and need assistance, contact be additional safety information contained on parts your NANNI representative and components sourced from suppliers that is not reproduced in this Operator Manual. Read Safety Instruction Carefully read all safety messages in this manual and on your genset safety signs. -
Page 11: Engine - Genset Safety Icons
SAFETY SAFETY PRECAUTIONS ENGINE - GENSET SAFETY ICONS Some stickers are fixed directly on the engine. They are HOT EXHAUST PRECAUTIONS intended to help you to quickly identify the location of certain components and avoid possible hazards when working on the engine. Servicing machine or attachments with engine running can result in serious Ensure that these stickers are always visible and replace... -
Page 12: Safe Maintenance Practice
SAFETY SAFE MAINTENANCE PRACTICE PROPER USE OF TOOLS Understand service procedures before Use tools appropriate to the work. doing work. Keep work area clean and dry. Makeshift tools and unfollowed procedures Never lubricate, service, or adjust engine can create safety hazards. Do not use U.S while it is running. -
Page 13: Noise Protection
SAFETY NOISE PROTECTION Paint removal: • Remove paint a minimum of 100 mm (4 in) from area to be affected by heating. If paint cannot be Prolonged exposure to loud noise can removed, wear an approved respirator mask before cause impairment or loss of hearing. Wear heating or welding. -
Page 14: Safe Cooling System Service
SAFETY SAFE COOLING SYSTEM SERVICE STATIC ELECTRICITY RISK Explosive release of fluids from pressurized cooling system can cause serious burns. Shut off engine. Only remove filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve The removal of sulphur and other compounds in pressure before removing completely. -
Page 15: Handling Batteries Safely
SAFETY HANDLING BATTERIES SAFELY If acid is spilled on skin or in eyes: If not handled properly, batteries are a potential source of hazards. Excess of gases in batteries may explode. Keep sparks and flames away from batteries. Never use a cigarette lighter to observe •... -
Page 16: Live With Safety
SAFETY LIVE WITH SAFETY Before returning engine to customer, make sure engine is functioning properly, especially the safety systems. Make sure that all guards and shields are in place. PREVENT ACCIDENTS When engine is OFF, always set the trans- mission lever to neutral position. -
Page 17: S03 Fluids Coolant Water
FLUIDS S03 FLUIDS COOLANT Water Antifreeze & corrosion protection Addition of antifreeze & corrosion inhibitor to water Risk of freezing Hot climates Topping up Recommended coolant Antifreeze & corrosion protection Antifreeze & corrosion protection Checking the coolant level Checking the coolant’s antifreeze & corrosion protection ENGINE LUBRICANTS Oil grade denomination Oil grade labels... -
Page 18: Antifreeze & Corrosion Protection
This can lead to the invalidation of Nanni’s warranty cooling system. This can lead to the invalidation of Sca- for faults and damage caused by the use of inappropriate nia’s warranty for faults and damage caused by the use of... -
Page 19: Risk Of Freezing
FLUIDS RISK OF FREEZING Example: If the temperature is -16 C (3°F), there is a risk of damage by freezing if the percentage of antifreeze and corrosion inhibitor is 20% by volume. At 30% antifreeze and corro- IMPORTANT ! sion protection by volume the coolant will not contain any ice. -
Page 20: Recommended Coolant
FLUIDS RECOMMENDED COOLANT IMPORTANT ! Scania Ready-Mix 50/50 Scania Ready-Mix 50/50 is a ready to use coolant contain- ing 50 % antifreeze (ethylene glycol) and corrosion protec- Containers, which are used for mixing coolant, must be tion and 50 % water. It should be used in cold countries intended for the purpose and free from any dirt or con- where there is a risk of freezing in the cooling system. -
Page 21: Antifreeze & Corrosion Protection
FLUIDS ANTIFREEZE & CORROSION PROTECTION TABLE in LITRES & °C 35% by volume of antifreeze provides sufficient protection against corrosion. Example: • The total volume of the cooling system is 40 litres. • The measured concentration of ethylene glycol is 35% by volume (freezing point -21°C). -
Page 22: Antifreeze & Corrosion Protection
FLUIDS ANTIFREEZE & CORROSION PROTECTION TABLE in U.S GALLONS & °F 35% by volume of antifreeze provides sufficient protection against corrosion. Example: • The total volume of the cooling system is 10.6 U.S gal- lons. • The measured concentration of ethylene glycol is 35% by volume (freezing point -6 °F). -
Page 23: Checking The Coolant Level
FLUIDS CHECKING THE COOLANT LEVEL CHECKING THE COOLANT’S ANTIFREEZE & CORROSION PROTECTION Specific tool WARNING ! Description Illustration Refractometer Do not open the coolant filler cap in the expan-sion tank if the engine is hot. Hot coolant and steam may spray out and cause burns. -
Page 24: Engine Lubricants
FLUIDS ENGINE LUBRICANTS For operation at extremely low outdoor temperatures: Consult your nearest Nanni representative on how to avoid starting difficulties. OIL GRADE DENOMINATION Viscosity Outdoor temperatures in °C class LDF branded oil stands for the Scania Long Drain Field test SAE 20W-30 -15°C... -
Page 25: Oil Grade Labels
If the oil grades below are used, you can order oil filler la- • TBN (in accordance with ASTM D4739): > 3.5. bels from your Nanni representative. • TBN (in accordance with ASTM D4739): > TAN (in accordance with ASTM D664). -
Page 26: Fuels
FLUIDS FUELS PERMITTED SULPHUR CONTENT IN DIESEL IMPORTANT ! DANGER ! The operator is responsible for using the correct type of Fuels and some fluids on board ships are easily flamma- diesel to ensure that local laws are complied with. ble. -
Page 27: Biodiesel (Fame)
Check the engine oil level regularly. If the oil level exceeds the maximum level, the oil must be changed. Check the cause if the oil level exceeds the maximum level and con- tact your nearest Nanni representative if you suspect a fault, or in case of doubt. -
Page 28: Water In Fuel
filters and penetrate in the fuel injection PRESERVATIVE FUEL system and cause a total engine failure which is not covered by Nanni Industries warranty. In the event of fuel Preservative fuel must not contain biodiesel. Even small contamination, contact the nearest Nanni agent who may, amounts of 5-10% biodiesel can have adverse effects on if necessary, use an approved disinfectant. -
Page 29: S04 Warranty
WARRANTY WARRANTY ENGINE IDENTIFICATION Original supplier engine plate Engine approval Engine responsibility Warranty Damage caused Proposition 65 state of California EPA warranty Emission control system(s) laws European Union (EU) declaration of emissions and conformity... -
Page 30: Engine Identification
Depending of type of engine, identification plate are as follows: 1 : Type of engine 2 : Nanni engine serial number 3 : Engine code ORIGINAL SUPPLIER ENGINE PLATE Example : DI13 076M... -
Page 31: Engine Approval
The engine type can be exhaust emission certified. It Nanni designs its engines to have minimum environmen- means that Nanni guarantees that all engines of the same tal impact. This objective, however, can only type that are manufactured are approved and certified be achieved with your full cooperation. -
Page 32: Warranty
Nanni representative. NOTE ! Late or improper maintenance or use of spare parts other than NANNI original spare parts will invalidate NANNI’s responsibility for the engine accordance with approval and will void the Warranty. Modifications to the engine’s settings, as well as any oth- er technical modification (accessories, spare parts, addi-... -
Page 33: Epa Warranty
Directive 2004/26/EC. The EU engine family is listed on the Emissions Label. When installed in accordance with the manufacturer’s instructions, Nanni Industries Marine Diesel Propulsion Engines without integral exhaust certified under Direc- tive 97/68/EC as amended by Directive 2004/26/EC pro-... - Page 34 NOTES...
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Page 35: S05 Instruments
INSTRUMENTS S05 INSTRUMENTS DASHBOARD DGBXXT09029 SI3 DIGITAL PANEL... -
Page 36: Dashboard
INSTRUMENTS DASHBOARD Nanni panel depends on your engine, refer to the manual corresponding to your panel. DGBXXT09029 SI3 DIGITAL PANEL... -
Page 37: S06 Components
COMPONENTS S06 COMPONENTS ENGINE MAIN COMPONENTS Engines views N13.CR3... -
Page 38: Engine Main Components
COMPONENTS ENGINE MAIN COMPONENTS NOTE ! Minor engine details may not be exactly as shown. Some components may not be part of the engine ordered. Not binding pictures. COMPONENTS Oil filler Fuel manual pump Bleed nipples on fuel filter (2off) Water separating prefilter for fuel Fuel filter Ventilating valve on the high pressure pump... -
Page 39: Engines Views N13.Cr3
COMPONENTS ENGINES VIEWS N13.CR3... - Page 40 NOTES...
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Page 41: S07 Start & Running Before Starting
START & RUNNING S07 START & RUNNING BEFORE STARTING Fuel system Raw water system Electrical system Neutral safeguard Check before starting STARTING THE ENGINE Cold weather operation Engine start Ignition and cranking Engine started Starting with booster batteries Engine reluctant to start Idling engine Normal engine operation Break in... -
Page 42: Fuel System
START & RUNNING BEFORE STARTING NOTE ! FUEL SYSTEM The use of a siphon breaker is mandatory if the exhaust The fuel is drawn from the tank by the fuel feed pump and elbow is under the waterline at full load or at less than is injected into the combustion chamber by the injection 200 mm above it. -
Page 43: Check Before Starting
Turn on the engine coolant heater for a minimum of 2 7. Check the coolant level, top up if necessary. hours before starting the engine. Additional information on cold weather operation is available from your Nanni 8. Check the mechanical control cables, lubricate as engine distributor or authorized servicing dealer. -
Page 44: Engine Start
START & RUNNING ENGINE START ENGINE STARTED In the wheelhouse, turn the Key switch to energize the To insure adequate lubrication, operate engine at or below electronic system. 1200 rpm with no load for 1-2 minutes. Extend this period to 2–4 minutes at freezing or sub-zero temperatures. 1. -
Page 45: Engine Reluctant To Start
START & RUNNING ENGINE RELUCTANT TO START NORMAL ENGINE OPERATION If a water lift (water lock) muffler is installed on the Check engine coolant temperature and oil pressure. exhaust line, excessive cranking could cause seawater Temperatures and pressures will vary between engines to enter the cylinders and damage the engine. -
Page 46: Break In
PTO should always be studied and approved by the R&D department of Nanni Industries S.A.S France. Contact Consult the boat builder or your Nanni dealer if you are your Nanni dealer for more informations. not sure about the operation of the remote control. -
Page 47: Running
START & RUNNING RUNNING CRUISING SPEED A recommended engine speed is given in the TECHNICAL BEHAVIOUR OF THE BOAT DATA section to help you to set your cruising speed. If this is your first boat or if you are not familiar with the boat, we urge you to practice controlling the boat at slow speed as a first step. -
Page 48: Manoeuvring
START & RUNNING MANOEUVRING TROLLING VALVE The Trolling valve system allows to reduce the rotation speed of the propeller below its speed when the engine is WARNING ! at idle. The boat speed is reduced by 30% to 70%. Shifting at high speed can damage both the engine and CAUTION ! the transmission and be dangerous for passengers. -
Page 49: After Running
START & RUNNING AFTER RUNNING AFTER STOPPING THE ENGINE STOPPING THE ENGINE CAUTION ! Even after the engine has stopped, some components CAUTION ! and fluids will remain hot and under pressure for several minutes. As far as possible, limit works on the engine immediately after stopping it. -
Page 50: Anchoring
START & RUNNING ANCHORING If the boat is not going to be used for some time but is being left in the water, the engine must be run to operating temperature at least once every 2 weeks. This prevents corrosion in the engine. When the boat is at anchor or in port for an extended period of time, vegetation may develop on the hull, the keel, the drive, the rudder, the propeller, etc. -
Page 51: S08 Maintenance
MAINTENANCE S08 MAINTENANCE ABOUT GENERALITIES MAINTENANCE INTERVALS MAINTENANCE INTERVALS TURBOCHARGER Turbo service CLEANING THE ENGINE EXHAUST SYSTEM AIR INTAKE Air cleaner Reading vacuum indicator Replace the air cleaner filter and safety cartridge Renewing an air filter with a non-renewable element FUEL SYSTEM Cleanliness requirements Checking fuel level... -
Page 52: About
CAUTION ! repair workshop nearby. We recommend to have all your works checked by a Nanni Clean the engine before any maintenance. Watch for any authorized workshop. - Page 53 MAINTENANCE MAINTENANCE The maintenance schedule covers a number of points divided into several sections: • Lubrication system. • Air cleaner • Cooling system • Fuel system • Various WARNING ! Prior to any work onto the engine, the starting motor command must be disabled first.
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Page 54: Maintenance Intervals
MAINTENANCE MAINTENANCE INTERVALS ENGINES N13.700 CR3 HD, N13.700CR3, N13.750 CR3, N13.800 CR3, N13.930 CR3. The maintenance program includes the following: • R maintenance : one event when taken into service • S maintenance : minimum basic maintenance • M maintenance : more extensive maintenance •... -
Page 55: Maintenance Intervals
MAINTENANCE MAINTENANCE INTERVALS ENGINE N13.900 CR3 (RATING M6.S) The maintenance program includes the following: • R maintenance : one event when taken into service • S maintenance : minimum basic maintenance • M maintenance : more extensive maintenance • L maintenance : includes nearly all maintenance items in the form •... -
Page 56: Turbocharger
MAINTENANCE TURBOCHARGER TURBO SERVICE Engine turbochargers are designed to provide long years of trouble free service, which if required, can only be performed by a specialized workshop. In view to maintain CAUTION ! turbochargers performances for as long as possible, some basic rules must be followed. -
Page 57: Cleaning The Engine
MAINTENANCE CLEANING THE ENGINE EXHAUST SYSTEM The exhaust system of an engine must be able to freely exhaust all exhaust gases at high temperatures after CAUTION ! combustion in the outside air. The exhaust resistance should be as low as possible to avoid a decrease in power, however the exhaust noise Beware of hot washing water. -
Page 58: Air Intake
MAINTENANCE AIR INTAKE WARNING ! Carry out these operations when the engine is stopped and cold. Make sure that no dust or dirt enter the intake manifold. The reliability and the performances of the engine depend among other things on the quantity and the temperature of the global air intake design. -
Page 59: Replace The Air Cleaner Filter And Safety Cartridge
IMPORTANT ! Number Description Illustration 970317077 Kit air filter cleaner EN, ESP, SUOMI If the engine has an air filter with a non-renewable Nanni CLEANER 970317078 Kit Air filter cleaner element, it should be renewed instead of cleaned. SPRAY SPRAY FR, IT, DEU 1. -
Page 60: Fuel System
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. -
Page 61: Checking Fuel Level
MAINTENANCE CHECKING FUEL LEVEL RENEWING THE FUEL FILTER Check the fuel level and top up with fuel as necessary. 1. Clean the exterior of the fuel filter with a damp cloth. 2. Unscrew the filter. 3. Apply oil to the gasket on the new filter. NOTE ! 4. -
Page 62: Draining And Renewing An Engine-Mounted Water Separating Prefilter
MAINTENANCE DRAINING AND RENEWING AN ENGINE- DRAINING AND RENEWING THE SINGLE MOUNTED WATER SEPARATING WATER SEPARATING PREFILTER (OPTION) PREFILTER IMPORTANT ! IMPORTANT ! The sensor cable is sensitive. Handle it carefully. The sensor cable is sensitive. Handle it carefully. Use a suitable container. The fuel collected 1. - Page 63 MAINTENANCE 9. Fill the width of the filter with clean fuel. 10. Screw the filter into position until the O-ring rests against the filter head. Tighten the filter another 1/2 to 3/4 turn by hand. 11. Open the shut-off cock in the fuel pipe and check that the fuel system is sealed.
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Page 64: Draining The Commutative Water Separating Prefilter (Option)
MAINTENANCE DRAINING THE COMMUTATIVE WATER 3. Undo the drain plug. SEPARATING PREFILTER (OPTION) 4. Tighten the drain plug when all the water has emptied. During operation, the arrow on the rotary control should point towards the filter being used. Use a suitable container. The fuel collected must be disposed of as specified in national and international laws and regulations. -
Page 65: Renewing The Commutative Water Separating Prefilter (Option)
MAINTENANCE RENEWING THE COMMUTATIVE WATER 5. Renew the O-rings in the cover. SEPARATING PREFILTER (OPTION) 6. Lubricate the O-rings with engine oil. During operation, the arrow on the rotary control should point towards the filter being used. Use a suitable container. The fuel collected must be disposed of as specified in national and international laws and regulations. -
Page 66: Bleeding The Fuel System
Illustration Suction tool for fuel system NOTE ! Nanni recommends bleeding the fuel system using suction tools rather than with a hand pump. This is a quicker and simpler method, which ensures a complete bleeding. 2. Attach a clear plastic hose to the ventilating valve on the prefilter... - Page 67 MAINTENANCE 9. Pump with the hand pump until fuel without air bubbles 14. Close the ventilating valve and screw the hand pump comes out. handle downwards. 10. Close the ventilating valve. 15. Start the engine The engine should be easy to start. 11.
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Page 68: Lubrication System
MAINTENANCE LUBRICATION SYSTEM CAUTION ! Never over-fill the engine oil crankcase. NOTE ! With a new or reconditioned engine, oil and oil filters must be replaced earliest after 100 hours of operation. Use oil grades as indicated in the section TECHNICAL DATA. Warranty claims may be rejected if unsuitable oil grade has been used. -
Page 69: Changing The Oil
MAINTENANCE CHANGING THE OIL WARNING ! Max. 45 litres (11.9 US gallons). Min. 39 litres (10.3 US gallons). Hot oil can cause burns and skin irritation. Wear protective gloves and eye protection when changing hot oil. Make sure that there is no pressure in the lubrication system before changing the oil. -
Page 70: Cleaning Centrifugal Oil Cleaner
MAINTENANCE CLEANING CENTRIFUGAL OIL CLEANER NOTE ! WARNING ! Take care not to damage the rotor shaft. 6. If the rotor nut is jammed: Turn the rotor upside down The oil may be hot. Carefully remove the cover from the and fasten the rotor nut in a vice. - Page 71 23. Screw the rotor nut back on by hand. 24. Check that the shaft is not damaged or loose. Contact a Nanni representative if the rotor shaft needs renewing. 16. Wash the parts according to the applicable industrial method.
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Page 72: Operational Testing Of The Centrifugal Oil Cleaner
MAINTENANCE OPERATIONAL TESTING OF THE 25. Refit the rotor and rotate it by hand to make sure it rotates easily. CENTRIFUGAL OIL CLEANER Operational testing need only be carried out if it is suspected that the centrifugal oil cleaner is malfunctioning. For example, if there are unusually few deposits given the distance driven. -
Page 73: Replace The Oil Filter
MAINTENANCE REPLACE THE OIL FILTER Clean the centrifugal oil cleaner at the same time as you change the oil filter. Otherwise, the oil filter will be blocked and resistance in the filter will increase. If this happens, an overflow valve in the filter retainer opens and lets the oil pass without being filtered. -
Page 74: Cooling System
Please refer to the Fluids section temperature and high pressure. Never attempt to use for complete information. flexible hoses supplied from a hardware store. A specific boiler kit is available from Nanni Industries. Please contact your nearest Nanni representative for more CAUTION ! information. -
Page 75: Checking Coolant Level
Filling coolant. irritation to the skin. Wear protective goggles and gloves when handling coolant. The following instructions apply to Nanni expansion tanks. For other types of expansion tanks, follow the manufacturer’s instructions. IMPORTANT ! 1. Check the coolant level through the sight glass on the expansion tank. -
Page 76: Checking Sacrificial Anodes
MAINTENANCE CHECKING SACRIFICIAL ANODES CHECKING SEA WATER PUMP IMPELLER 1. Drain the sea water circuit as described in the Draining the sea water circuit. IMPORTANT ! 2. Remove the sea water pump cover. See illustration. Corrosion of sacrificial anodes depends on the operating environment. -
Page 77: Changing The Coolant And Cleaning The Coolant System
MAINTENANCE CHANGING THE COOLANT AND 1. Pull out the impeller using the puller. Note the direction of rotation of the impeller vanes. CLEANING THE COOLANT SYSTEM 2. Fit a new impeller and cap. Check that the cap seal is not hard or damaged. DRAINING COOLANT Special tool Number... - Page 78 MAINTENANCE DRAINING THE SEA WATER CIRCUIT REMOVING THE CHARGE AIR COOLER 1. Close the bottom valve on the sea water inlet and When the cooler core of the charge air cooler needs remove the connection pipe (1) on the outlet from the cleaning, the charge air cooler must be removed if there is heat exchanger.
- Page 79 MAINTENANCE 4. Remove the water pipe (4) of the charge air cooler. REMOVING THE HEAT EXCHANGER 5. Release the hose clamp and remove the sea water When the cooler core of the heat exchanger needs hose (5) between the charge air cooler and the heat cleaning, the heat exchanger must be removed.
- Page 80 MAINTENANCE CLEANING THE HEAT EXCHANGER FITTING THE HEAT EXCHANGER IMPORTANT ! There is a risk that the joint will crack if these installation instructions are not followed. Tightening torque: M6 10 Nm (7 lb-ft) M8 26 Nm (19 lb-ft) M10 50 Nm (37 lb-ft) 1.
- Page 81 MAINTENANCE 7. Fit the hose (1) between the heat exchanger and the 5. Fit the charge air pipe (3) between the intake manifold water-cooled exhaust pipe bend and tighten the and charge air cooler. To facilitate fitting, lubricate the O-ring and the inside of the connection in the charge air cooler with vaseline.
- Page 82 MAINTENANCE 4. Run the engine until it has reached operating temperature FILLING COOLANT for approximately 20-30 minutes.Remember to switch on the cab heating system, if one is installed. This procedure applies when the cooling system has been drained and needs to be filled with a large amount 5.
- Page 83 MAINTENANCE 1. Open the expansion tank cap. FINISHING WORK 2. Connect the coolant pump to the filler nipple in the 1. Open the bottom valve on the sea water inlet. cylinder block. 2. Start the engine and check that no leakage occurs. 3.
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Page 84: Electrical System
MAINTENANCE ELECTRICAL SYSTEM Separate the mass and 0 V. In marine installations, the mass and the 0 V must not be connected. The hull is the ground and the negative terminal of the battery is 0 V. 24 V and 0 V are filtered in the main display to reduce DANGER ! electromagnetic interference. -
Page 85: Battery
BATTERY ELECTROLYTE LEVEL To charge two independent batteries with a single alternator, an isolator is available as an option on most engines. Contact an authorized Nanni representative. DANGER ! KEEP CLEAN THE BATTERY Never touch the battery electrolyte with bare fingers. The The Battery(ies) should be kept clean and dry. -
Page 86: Electrolyte Level Check
MAINTENANCE ELECTROLYTE LEVEL CHECK If the battery electrolyte level cannot be adjusted (maintenance free battery type), do not use or charge the battery if the fluid level is below the lower limit level. In general, detailed informations for service provided by battery manufacturers are very scarce. -
Page 87: Miscellaneous
MAINTENANCE MISCELLANEOUS Before starting, make a note of how the drive belt is fitted. Refit the drive belt with the same direction of rotation as it had before removal. DRIVE BELT 1. Check the drive belt for cracks. Renew the drive belt if The engine alternator is driven by a belt through pulleys. -
Page 88: Checking For Leaks
MAINTENANCE CHECKING FOR LEAKS IMPORTANT ! If serious leakage occurs, contact your nearest NANNI representative. 1. Start the engine. 2. Check for oil, coolant, fuel, air or exhaust leaks. The drive belt has deep cracks and must be renewed. 3. Tighten or renew leaking connections. Check the overflow holes which show whether the O-rings... -
Page 89: Checking And Adjusting The Valve Clearance
MAINTENANCE CHECKING AND ADJUSTING THE VALVE On the flywheel is engraved the reference information UP TDC, DOWN TDC and the angle indications listed in the CLEARANCE table below. Depending on the engine installation, this information is visible in one of the windows, either furthest Special tools up or furthest down on the flywheel. - Page 90 MAINTENANCE 7. If necessary, adjust the valve clearance by a) loosening the lock nut on the end of the rocker arm b) adjusting the valve clearance with the adjusting screw c) tightening the lock nut. 8. Mark the rocker arm with the felt-tip pen and then continue with the next cylinder according to the table.
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Page 91: S09 Storage
9. Drain any water and contaminants from the fuel tank. of measures must be performed. All these operations should be carried out by a Nanni authorized workshop. 10. Fill totally the fuel tank. 11. Remove the air filter. Secure all air intake with clean clothes. -
Page 92: Restarting The Engine
STORAGE RESTARTING THE ENGINE BATTERY When storing the engine, adjust the battery electrolyte 1. Perform external cleaning of the engine and control level and store it in a dry place at room temperature. its condition. Recharge the battery as often as possible to extend its 2. -
Page 93: S10 Troubleshooting
CAUTION ! If the engine does not function properly, use the following chart to identify the cause. If the cause of trouble can not be found, contact to Nanni authorized workshop. NOTE ! Some components may not be part of the engine orderes. This list is not exhaustive and is only an assistance in case of emergencies. - Page 94 TROUBLESHOOTING 1. Lack of fuel 2. Air in fuel system 3. Fuel filter fouled or clogged 4. Fuel do not meet specified standard 5. Water/contaminants in fuel 6. Valve clearance is wrong * 7. Low compression * 8. Insufficient battery charge / Defective battery 9.
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