OPERATION MANUAL BY series 4BY 6BY
BY BY Series Operation Manual series OPERATION MANUAL 4BY 6BY P/N: 0ABY0-G00100 MARINE ENGINES
Disclaimers: All information, illustrations and specifications in this manual are based on the latest information available at the time of publishing. The illustrations used in this manual are intended as representative reference views only. Moreover, because of our continuous product improvement policy, we may modify information, illustrations and / or specifications to explain and / or exemplify a product, service or maintenance improvement.
TABLE OF CONTENTS BY Series Operation Manual Page Record of Ownership ................................................. 2 Safety Precautions ..................................................... 4 Before You Operate............................................. 4 During Operation and Maintenance..................... 5 Yanmar BY-Series Features and Applications......... 23 Component Identification ......................................... Left Side - 4BY ..................................................
TABLE OF CONTENTS Engine Coolant ......................................................... 49 Recommended Engine Coolant ......................... 51 Power Steering Fluid Specifications ......................... 52 Checking Power Steering Fluid Level ................ 52 Daily Checks............................................................. Visual Checks .................................................... Checking Diesel Fuel, Engine Oil, and Engine Coolant Levels .......................................
TABLE OF CONTENTS Periodic Maintenance Procedures ........................... 83 After Initial 50 Hours of Operation ..................... 83 Change the Engine Oil and Replace the Engine Oil Filter..................................... 83 Check Shift Cable Adjustment .................... 85 Adjust Propeller Shaft Alignment (If Equipped with Marine Gear) ................... 85 Every 50 Hours of Operation ............................. 85 Check the Seawater Filter (If Equipped) and Inlet .......................
TABLE OF CONTENTS Troubleshooting Chart .............................................. 98 Starting Trouble.................................................. 98 Exhaust Color..................................................... 98 Vibration - Drive Disengaged ............................. 99 Vibration - Drive Engaged .................................. 99 Engine Knocks ................................................. 100 Low Power Output............................................ 100 Engine Overheat .......
BY Series Operation Manual INTRODUCTION Welcome to the world of Yanmar Marine! Yanmar Marine offers engines, drive systems and accessories for all types of boats, from runabouts to sailboats, and from cruisers to mega yachts. In marine leisure boating, the worldwide reputation of Yanmar Marine is second to none. We design our engines to respect nature. This means quieter engines, with minimal vibrations, cleaner than ever.
INTRODUCTION RECORD OF OWNERSHIP Take a few moments to record the information you need when you contact Yanmar for service, parts or literature. Engine Model: __________________________________________________________ Engine Serial No.
BY Series Operation Manual SAFETY Yanmar considers safety of great importance and recommends that anyone that comes into close contact with its products, such as those who install, operate, maintain or service Yanmar products exercise care, common sense and comply with the safety information in this manual and on the machine’s safety labels. Keep the labels from becoming dirty or torn and replace them if they are lost or damaged.
SAFETY SAFETY PRECAUTIONS A CAUTION Caution (the word “CAUTION” is in black letters with a yellow rectangle behind it) – indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Before You Operate CAUTION 0000001en CAUTION Caution without the safety alert symbol indicates a potentially hazardous situation that can cause damage to the engine, personal property and / or the environment or cause the engine to operate improperly.
SAFETY During Operation and Maintenance A DANGER A DANGER SCALD HAZARD! EXPLOSION HAZARD! • Keep the area around the battery well-ventilated. While the engine is running or the battery is charging, hydrogen gas is produced which can be easily ignited. • NEVER remove the coolant filler cap if the engine is hot. Steam and hot engine coolant will escape and seriously burn you. Allow the engine to cool before attempting to remove the filler cap.
SAFETY A DANGER A DANGER FIRE AND EXPLOSION HAZARD! FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Diesel fuel is flammable and explosive under certain conditions. • When you remove any fuel system component to perform maintenance (such as changing the fuel filter) place an approved container under the opening to catch the fuel. • NEVER use diesel fuel as a cleaning agent. • NEVER use a shop rag to catch the fuel.
SAFETY A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Only use the key switch to start the engine. • NEVER jump start the engine. Sparks caused by shorting the battery to the starter terminals may cause a fire or explosion. • Failure to comply will result in death or serious injury. 0000004en FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Only fill the fuel tank with diesel fuel.
SAFETY A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Before you operate the engine, check for fuel leaks. Replace rubberized fuel hoses every two years or every 2000 hours of engine operation, whichever comes first, even if the engine has been out of service. Rubberized fuel lines tend to dry out and become brittle after two years or 2000 hours of engine operation, whichever comes first.
SAFETY A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Be sure to place the diesel fuel container on the ground when transferring the diesel fuel from the pump to the container. Hold the hose nozzle firmly against the side of the container while filling it. This prevents static electricity buildup which could cause sparks and ignite fuel vapors.
SAFETY A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • When you prime the fuel system, operate the fuel priming lever of the mechanical fuel pump several times until the fuel filter cup is filled with fuel. • NEVER open the air vent valve while the fuel system is being primed. The fuel filter has an internal air bleed port.
SAFETY A DANGER A WARNING CRUSH HAZARD! • ALWAYS use the engine lifting eyes when lifting the marine engine. The lifting eyes are engineered to lift the weight of the marine engine only. • ALWAYS use lifting equipment with sufficient capacity to lift the marine engine. Additional equipment is necessary to lift the marine engine and marine gear together. • NEVER stand under hoisted marine engine. If the hoist mechanism fails, the marine engine will fall on you, causing serious injury or death.
SAFETY A WARNING A WARNING EXHAUST HAZARD! • NEVER operate the engine in an enclosed area such as a garage, tunnel, underground room, manhole or ship’s hold without proper ventilation. • NEVER block windows, vents, or other means of ventilation if the engine is operating in an enclosed area. All internal combustion engines create carbon monoxide gas during operation. Accumulation of this gas within an enclosure could cause illness or even death.
SAFETY A WARNING A WARNING SUDDEN MOVEMENT HAZARD! • Be sure the boat is in open water away from other boats, docks, and other obstructions before increasing rpm. EXPOSURE HAZARD! • Wear personal protective equipment such as gloves, work shoes, eye and hearing protection as required by the task at hand. • NEVER wear jewelry, unbuttoned cuffs, ties or loose fitting clothing when you are working near moving / rotating parts such as the flywheel or PTO shaft.
SAFETY A WARNING A WARNING HIGH PRESSURE HAZARD! SHOCK HAZARD! • Avoid skin contact with high pressure diesel fuel spray caused by a fuel system leak such as a broken fuel injection line. High pressure fuel can penetrate your skin and result in serious injury. If you are exposed to high pressure fuel spray, obtain prompt medical treatment. • NEVER check for a fuel leak with your hands. ALWAYS use a piece of wood or cardboard. Have your authorized Yanmar marine dealer or distributor repair the damage.
SAFETY A WARNING A WARNING ENTANGLEMENT HAZARD! WELDING SHOCK HAZARD! • Turn off the battery switch (if equipped) or disconnect the negative battery cable and the leads to the alternator when welding on the vessel. • Remove the multi-pin connector to the engine control unit. Connect the weld clamp to the component to be welded and as close as possible to the welding point. • NEVER connect the weld clamp to the engine or in a manner which would allow current to pass through a mounting bracket.
SAFETY A WARNING A WARNING BURN HAZARD! BURN HAZARD! • If you must drain the engine oil while it is still hot, stay clear of the hot engine oil to avoid being burned. • Keep your hands, and other body parts, away from hot engine surfaces such as the muffler, exhaust pipe, turbocharger and engine block during operation and shortly after you shut the engine down. These surfaces are extremely hot while the engine is operating and could seriously burn you. • ALWAYS wear eye protection.
SAFETY A CAUTION A CAUTION COOLANT HAZARD! • Wear eye protection and rubber gloves when you handle Long Life engine coolant. If contact with the eyes or skin should occur, flush eyes and wash immediately with clean water. • Failure to comply may result in minor or moderate injury. FLYING OBJECT HAZARD! • ALWAYS wear eye protection when servicing engine and when using compressed air or high-pressure water. Dust, flying debris, compressed air, pressurized water or steam may injure your eyes.
SAFETY CAUTION CAUTION Be sure to close the seacock. Neglecting to close the seacock could allow water to leak into the boat and may cause it to sink. 0000152en CAUTION NEVER attempt to adjust the low or high idle speed limit screw. This may impair the safety and performance of the engine and shorten its life. If adjustment is ever required, see your authorized Yanmar marine dealer or distributor.
SAFETY CAUTION CAUTION Observe the following environmental operating conditions to maintain engine performance and avoid premature engine wear: Observe the following environmental operating conditions to maintain engine performance and avoid premature engine wear: • NEVER run the engine if the ambient temperature is above +40°C (+104°F) or below -16°C (+5°F) • Avoid operating in extremely dusty conditions.
SAFETY CAUTION CAUTION New Engine Break In: • On the initial engine start-up, check for proper engine oil pressure, diesel fuel leaks, engine oil leaks, coolant leaks, and for proper operation of the indicators and / or gauges. • During the first 50 hours of operation operate your new engine under a substantial load at all times. For best break-in results operate the engine at various speeds. • Operating the engine in NEUTRAL must be avoided. During the first 50 hours, avoid operation below 2000 rpm.
SAFETY CAUTION CAUTION Make sure the engine is installed on a level surface. If a Yanmar Marine Engine is installed at an angle that exceeds the specifications stated in the Yanmar Marine Installation manuals, engine oil may enter the combustion chamber causing excessive engine speed, white exhaust smoke and serious engine damage. This applies to engines that run continuously or those that run for short periods of time. 0000010enMarine CAUTION Be careful not to get any oil on the belt(s).
SAFETY CAUTION CAUTION Establish a periodic maintenance plan according to the engine application and make sure you perform the required periodic maintenance at intervals indicated. Failure to follow these guidelines will impair the engine’s safety and performance characteristics, shorten the engine’s life and may affect the warranty coverage on your engine. • When the engine is operated in dusty conditions, clean the air cleaner element more frequently.
PRODUCT OVERVIEW BY Series Operation Manual YANMAR BY-SERIES FEATURES AND APPLICATIONS The BY-series engines are in-line 4- and 6-cylinder direct injection diesel engines. The engines are turbocharged and equipped with a liquid cooling system. These engines are designed for pleasure craft use. In order to obtain full performance from your engine, it is imperative that you check the size and structure of the hull and use a propeller of the appropriate size.
PRODUCT OVERVIEW This engine is designed for pleasure boat applications. The engine is designed to be operated at: Maximum throttle for less than 5% of its total operation time (30 minutes out of every 10 hours). The engine should be operated at cruising speed (3200 - 3300 rpm) for less than 90% of its total operation time (9 hours out of every 10 hours).
PRODUCT OVERVIEW COMPONENT IDENTIFICATION Right Side - 4BY Left Side - 4BY Figure 1, Figure 2, and Figure 3 illustrate a typical version of a 4BY engine. Your engine may have different equipment from that illustrated.
PRODUCT OVERVIEW Top View - 4BY Left Side - 6BY (2) (3) (1) (4) Figure 4, Figure 5, and Figure 6 illustrate a typical version of a 6BY engine. Your engine may have different equipment from that illustrated.
PRODUCT OVERVIEW Right Side - 6BY Top View - 6BY (4) (5) (2) (3) (4) (1) (3) (2) (6) (7) (5) (1) (7) (9) (8) 0003646 Figure 5 1 2 3 4 5 6 7 8 9 – Zinc Anode – Zinc Anode – Exhaust / Water Mixing Elbow – Coolant Drain Cock – Heat Exchanger – Seawater Pump – Seawater Drain Cock – Hydraulic Oil Cooler – Water Drain Plug BY Series Operation Manual (6) 0003647 Figure 6 1 2 3 4 – Fuel Fine Filter – Intake Air Manifold – Engine Oil Filter – Power Steering Filler Port (if equipped) 5 – Engine Oil
PRODUCT OVERVIEW LOCATION OF LABEL AND NAMEPLATES N 4 BY 1085 N 075 1100 7 824 951 The engine data and drive information nameplates on Yanmar BY series engines are shown in Figure 7. Replace if damaged or lost. The typical location of the engine name plate is shown for Yanmar 4BY Series marine engines (Figure 7). 6BY engines are similar. Model Gear Model min-1 Continuous Power KW min-1 Speed of Prop Shaft D min-1 Fuel Stop Power KW ENG. No. YANMAR DIESEL ENGINE SERIAL NUMBERS ENGINE YANMAR CO.
PRODUCT OVERVIEW FUNCTION OF MAJOR COMPONENTS Name of Component Function Fuel Filter / Water Separator Removes dirt and water from the fuel. The filter element should be replaced periodically. See Replace Fuel Filter / Water Separator Element on page 90. The water separator should be drained periodically. See Drain the Fuel / Water Separator on page 54. Fuel Fine Filter Removes extremely fine contaminants from fuel prior to entering fuel injection system.
PRODUCT OVERVIEW Name of Component Function Coolant Recovery Tank The coolant fill cap valve releases vapor and hot water overflow to the coolant recovery tank. When the engine stops and the coolant cools, the pressure in the heat exchanger drops. The fill cap valve then opens to send coolant back from the coolant recovery tank. This minimizes coolant consumption. The closed cooling system coolant level can easily be checked and refilled in this tank.
PRODUCT OVERVIEW FUSES AND RELAYS (1) (13) (2) IMPORTANT (4) (3) ( ) (6) (8) 5 ( ) (7) (9) 10 (11) (14) The electrical panel cables must be connected directly to the battery, and must have an 80 A circuit breaker installed in the B+ (red) lead.
PRODUCT OVERVIEW ENGINE COVER (1) (1) 0003827 Figure 10 1. Turn screws (Figure 10, (1)) one-quarter turn to loosen. 2. Lift cover off of engine.
BEFORE YOU OPERATE BY Series Operation Manual This section of the Operation Manual describes the diesel fuel, engine oil, and engine coolant specifications and how to replenish them. It also describes the daily engine checkout. CAUTION NEVER permit anyone to install or operate the engine without proper training. • Read and understand this Operation Manual before you operate or service the engine to ensure that you follow safe operating practices and maintenance procedures.
BEFORE YOU OPERATE A DANGER A DANGER SCALD HAZARD! • NEVER remove the coolant filler cap if the engine is hot. Steam and hot engine coolant will escape and seriously burn you. Allow the engine to cool before attempting to remove the filler cap. • Securely tighten the filler cap after checking the coolant level. Steam can escape during engine operation if the cap is loose. • Failure to comply will result in death or serious injury.
BEFORE YOU OPERATE A DANGER A DANGER FIRE AND EXPLOSION HAZARD! FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Diesel fuel is flammable and explosive under certain conditions. • Be sure to place the diesel fuel container on the ground when transferring the diesel fuel from the pump to the container. Hold the hose nozzle firmly against the side of the container while filling it.
BEFORE YOU OPERATE A WARNING A WARNING HIGH PRESSURE HAZARD! • Avoid skin contact with high pressure diesel fuel spray caused by a fuel system leak such as a broken fuel injection line. High pressure fuel can penetrate your skin and result in serious injury. If you are exposed to high pressure fuel spray, obtain prompt medical treatment. • NEVER check for a fuel leak with your hands. ALWAYS use a piece of wood or cardboard. Have your authorized Yanmar marine dealer or distributor repair the damage.
BEFORE YOU OPERATE A CAUTION CAUTION If any problem is noted during the visual check, the necessary corrective action should be taken before you operate the engine. 0000021en COOLANT HAZARD! • Wear eye protection and rubber gloves when you handle Long Life engine coolant. If contact with the eyes or skin should occur, flush eyes and wash immediately with clean water. • Failure to comply may result in minor or moderate injury.
BEFORE YOU OPERATE CAUTION CAUTION • ALWAYS be environmentally responsible. • Follow the guidelines of the EPA or other governmental agencies for the proper disposal of hazardous materials such as engine oil, diesel fuel and engine coolant. Consult the local authorities or reclamation facility. • NEVER dispose of hazardous materials irresponsibly by dumping them into a sewer, on the ground or into ground water or waterways. • Only use the engine oil specified.
BEFORE YOU OPERATE DIESEL FUEL Diesel Fuel Specifications Diesel fuel should comply with the following specifications. The table lists several specifications for diesel fuels. DIESEL FUEL SPECIFICATION LOCATION No. 2-D, No. 1-D, ASTM D975-94 USA EN590:96 European Union • Poor quality fuel can reduce engine performance and / or cause engine damage. • Fuel additives are not recommended. Some fuel additives may cause poor engine performance.
BEFORE YOU OPERATE Filling the Fuel Tank A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Only fill the fuel tank with diesel fuel. Filling the fuel tank with gasoline may result in a fire and will damage the engine. • NEVER refuel with the engine running. • Wipe up all spills immediately. • Keep sparks, open flames or any other form of ignition (match, cigarette, static electric source) well away when refueling.
BEFORE YOU OPERATE IMPORTANT A DANGER Operate bilge ventilation (blowers) for a minimum of 5 minutes to purge fumes from engine compartment after refueling. FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Before you operate the engine, check for fuel leaks. Replace rubberized fuel hoses every two years or every 2000 hours of engine operation, whichever comes first, even if the engine has been out of service.
BEFORE YOU OPERATE 1. Turn the key switch on and leave on for 10 seconds. ENGINE OIL CAUTION CAUTION NEVER hold the key in the START position for longer than 10 seconds or the starter motor will overheat. 0000201en 2. Turn key switch OFF for 5 seconds, then turn key switch ON for 10 seconds. 3. Repeat steps 1 and 2 five more times. Note: The engine may run rough and misfire for a few seconds when first started until any remaining air is purged from the fuel system. 4. Attempt to start the engine.
BEFORE YOU OPERATE Engine Oil Specifications Engine Oil Viscosity Use a full synthetic - long life engine oil that meets or exceeds the following guidelines and classifications: Select the appropriate engine oil viscosity based on the ambient temperature shown in the SAE Service Grade Viscosity Chart (Figure 2).
BEFORE YOU OPERATE Recommended Engine Oil LongLife 01 Oils Trade name 44 Producer/Supplier Addinol Super power MV 0537 Addinol Lube Oil GmbH Agip Formula LL B 01 ENI S.p.A. Refining and Marketing Division Agip Sint 2000 Evolution ENI S.p.A. Refining and Marketing Division Agip TECSINT SL ENI S.p.A.
BEFORE YOU OPERATE Trade name Producer/Supplier Elf Excellium XLL Total Esso Ultron FE ExxonMobil Galp Formula XLD Petrogal SA Gulf Formula TLX Total Havoline Synthetic BM Chevron Texaco Havoline Ultra BM Chevron Texaco Igol Process Compact P Igol France S.A. INA Futura Compact P INA Maziva Rijeka Jet Top Level ConocoPhillips GmbH Labo RC Fuchs Labo Auto S.A.
BEFORE YOU OPERATE Trade name 46 Producer/Supplier Shell Helix Ultra AB Shell International Petroleum Company Shell Helix Ultra AL Shell International Petroleum Company Statoli LazerWay B Statoil Lubricants Tecar Motorenöl Supersyn Techno-Einkauf GmbH Titan Supersyn SL Fuchs Petrolub AG Titan Supersyn SL Longlife Fuchs Petrolub AG Tor Synthetic LL De Oliebron Total Activa Expertise 9000 Total Total Quartz Expertise 9000 Total Valvoline SynPower MXL Valvoline Veedol Powertron LL01 Vee
BEFORE YOU OPERATE LongLife 04 Oils Trade name Producer/Supplier Addinol Super power MV 0537 Addinol Lube Oil GmbH Agip Formula MS B04 ENI S.p.A.
BEFORE YOU OPERATE Checking Engine Oil Adding Engine Oil (2) (1) CAUTION • NEVER overfill the engine with engine oil. • ALWAYS keep the oil level between upper and lower lines on the dipstick. 0000015enBY 0003653 (2) Figure 3 Note: 4BY series shown. 6BY is similar. 1. Remove dipstick (Figure 3, (1)) and wipe with clean cloth. 2. Fully reinsert dipstick. (1) (2) 0003826 Figure 4 3. Remove dipstick.
BEFORE YOU OPERATE MARINE GEAR OR STERN DRIVE OIL Refer to the instruction book for each marine gear or stern drive. ENGINE COOLANT A DANGER SCALD HAZARD! • NEVER remove the coolant filler cap if the engine is hot. Steam and hot engine coolant will escape and seriously burn you. Allow the engine to cool before attempting to remove the filler cap. • Securely tighten the filler cap after checking the coolant level. Steam can escape during engine operation if the cap is loose.
BEFORE YOU OPERATE A CAUTION COOLANT HAZARD! • Wear eye protection and rubber gloves when you handle Long Life engine coolant. If contact with the eyes or skin should occur, flush eyes and wash immediately with clean water. • Failure to comply may result in minor or moderate injury. 0000005enMarine CAUTION • Only use the engine coolant specified. Other engine coolants may affect warranty coverage, cause an internal buildup of rust and scale and / or shorten engine life.
BEFORE YOU OPERATE Recommended Engine Coolant Trade Name Manufacturer Addinol Antifreeze Super Addinol Lube Oil GmbH Aral Antifreeze Extra Aral AG AVIA Antifreeze APN AVIA Mineralöl AG BMW Coolant BMW AG BP anti-frost X 2270A BP Schmierstoff GMBH, Hamburg Caltex CX Engine Coolant Caltex Castrol ANTI-FREEZE NF Castrol International Fridex G48 Velena s.a. Glacelf Plus Total GlycoShell Shell International Glyco star Bremin Mineralöl GmbH & Co. Glysantin G48-24 Engine Coolant UNICO Ltd.
BEFORE YOU OPERATE POWER STEERING FLUID SPECIFICATIONS Refer to the stern drive manufacturer’s literature for power steering fluid specifications. Checking Power Steering Fluid Level DAILY CHECKS Before you head out for the day, make sure the Yanmar engine is in good operating condition. Make sure you check the following items. A WARNING 1. Remove power steering filler cap. HIGH PRESSURE HAZARD! (1) (2) 0004042 Figure 6 2.
BEFORE YOU OPERATE Visual Checks A WARNING 1. Check the exterior of the engine for leaks, wear, or damage. 2. Check for engine oil leaks. 3. Check for fuel leaks. ENTANGLEMENT HAZARD! • Stop the engine before you begin to service it. • NEVER leave the key in the key switch when you are servicing the engine. Someone may accidentally start the engine and not realize you are servicing it. This could result in a serious injury.
BEFORE YOU OPERATE Checking Diesel Fuel, Engine Oil, and Engine Coolant Levels Drain the Fuel / Water Separator Follow the procedures in Filling the Fuel Tank on page 40 and Checking Engine Oil on page 48 to check these levels. Checking the Battery Electrolyte Level Check the battery electrolyte level before use. See Check the Battery Electrolyte Level (Serviceable Batteries Only) on page 86. (2) (1) Checking the Alarm Indicators (3) Check the instruments and alarm indicators at regular intervals.
ENGINE OPERATION BY Series Operation Manual This section of this Operation Manual describes the procedures for starting the engine, checking engine performance during operation, and shutting the engine down. CAUTION NEVER permit anyone to install or operate the engine without proper training. • Read and understand this Operation Manual before you operate or service the engine to ensure that you follow safe operating practices and maintenance procedures.
ENGINE OPERATION A DANGER A DANGER EXPLOSION HAZARD! FIRE AND EXPLOSION HAZARD! • Keep the area around the battery well-ventilated. While the engine is running or the battery is charging, hydrogen gas is produced which can be easily ignited. • Diesel fuel is flammable and explosive under certain conditions. • Keep sparks, open flame and any other form of ignition away while the engine is running or battery is charging. • Failure to comply will result in death or serious injury.
ENGINE OPERATION A WARNING A WARNING SUDDEN MOVEMENT HAZARD! SEVER HAZARD! • Be sure the boat is in open water away from other boats, docks, and other obstructions before increasing rpm. • Keep hands and other body parts away from moving / rotating parts such as the flywheel or PTO shaft. • Failure to comply could result in death or serious injury. • Wear tight fitting clothing and keep your hair short or tie it back while the engine is running.
ENGINE OPERATION A WARNING EXPOSURE HAZARD! • Wear personal protective equipment such as gloves, work shoes, eye and hearing protection as required by the task at hand. • NEVER wear jewelry, unbuttoned cuffs, ties or loose fitting clothing when you are working near moving / rotating parts such as the flywheel or PTO shaft. • ALWAYS tie back long hair when you are working near moving / rotating parts such as a flywheel or PTO shaft.
ENGINE OPERATION CAUTION CAUTION Observe the following environmental operating conditions to maintain engine performance and avoid premature engine wear: NEVER turn off the battery switch (if equipped) or short the battery cables during operation. Damage to the electric system will result. • Avoid operating in extremely dusty conditions. • Avoid operating in the presence of chemical gases or fumes. 0000003enMarine CAUTION 0000061en CAUTION Be sure to close the seacock.
ENGINE OPERATION STARTING THE ENGINE 1. Open the seacock (if equipped). 2. Open the fuel cock. 3. Turn the battery master switch (if equipped) ON. 4. Put remote control handle in NEUTRAL. Starting at Low Temperatures CAUTION NEVER use an engine starting aid such as ether. Engine damage will result. 0000009en 5. Ensure lanyard is connected to emergency stop switch. 6. Attach lanyard to clothing. 7. Turn key switch to ON. Ensure that the instrument panel indicators are powered and working.
ENGINE OPERATION SHUTTING DOWN THE ENGINE CHECKING THE ENGINE AFTER OPERATION Under normal operating conditions, shut down the engine by turning the key switch to OFF. • Check that the key switch is in the OFF position and battery master switch (if equipped) is OFF. There may be a delay of up to 3-seconds after turning the key to OFF. This is normal and allows the ECU computer to store data. • Fill the fuel tank.
ENGINE OPERATION This Page Intentionally Left Blank 62 BY Series Operation Manual
PERIODIC MAINTENANCE BY Series Operation Manual This section of the Operation Manual describes the procedures for proper care and maintenance of the engine. SAFETY PRECAUTIONS Before You Operate CAUTION NEVER permit anyone to install or operate the engine without proper training. • Read and understand this Operation Manual before you operate or service the engine to ensure that you follow safe operating practices and maintenance procedures.
PERIODIC MAINTENANCE During Operation and Maintenance A DANGER A DANGER SCALD HAZARD! EXPLOSION HAZARD! • Keep the area around the battery well-ventilated. While the engine is running or the battery is charging, hydrogen gas is produced which can be easily ignited. • NEVER remove the coolant filler cap if the engine is hot. Steam and hot engine coolant will escape and seriously burn you. Allow the engine to cool before attempting to remove the filler cap.
PERIODIC MAINTENANCE A DANGER A DANGER FIRE AND EXPLOSION HAZARD! FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Diesel fuel is flammable and explosive under certain conditions. • When you remove any fuel system component to perform maintenance (such as changing the fuel filter) place an approved container under the opening to catch the fuel. • NEVER use diesel fuel as a cleaning agent. • NEVER use a shop rag to catch the fuel.
PERIODIC MAINTENANCE A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Only use the key switch to start the engine. • NEVER jump start the engine. Sparks caused by shorting the battery to the starter terminals may cause a fire or explosion. • Failure to comply will result in death or serious injury. 0000004en A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Only fill the fuel tank with diesel fuel.
PERIODIC MAINTENANCE A DANGER A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • Before you operate the engine, check for fuel leaks. Replace rubberized fuel hoses every two years or every 500 hours of engine operation, whichever comes first, even if the engine has been out of service. Rubberized fuel lines tend to dry out and become brittle after two years or 500 hours of engine operation, whichever comes first.
PERIODIC MAINTENANCE A WARNING A WARNING EXHAUST HAZARD! SEVER HAZARD! • Keep hands and other body parts away from moving / rotating parts such as the flywheel or PTO shaft. • Wear tight fitting clothing and keep your hair short or tie it back while the engine is running. • Remove all jewelry before you operate or service the engine. • NEVER start the engine in gear. Sudden movement of the engine and / or vessel could cause death or serious personal injury.
PERIODIC MAINTENANCE A WARNING A WARNING ALCOHOL AND DRUG HAZARD! • NEVER operate the engine while you are under the influence of alcohol or drugs. • NEVER operate the engine when you are feeling ill. • Failure to comply could result in death or serious injury. EXPOSURE HAZARD! • Wear personal protective equipment such as gloves, work shoes, eye and hearing protection as required by the task at hand.
PERIODIC MAINTENANCE A WARNING A WARNING SUDDEN MOVEMENT HAZARD! • Be sure the boat is in open water away from other boats, docks, and other obstructions before increasing rpm. • Failure to comply could result in death or serious injury. 0000006enMarine A WARNING HIGH PRESSURE HAZARD! SHOCK HAZARD! • Turn off the battery switch (if equipped) or disconnect the negative battery cable before servicing the electrical system.
PERIODIC MAINTENANCE A WARNING A WARNING ENTANGLEMENT HAZARD! BURN HAZARD! • Stop the engine before you begin to service it. • NEVER leave the key in the key switch when you are servicing the engine. Someone may accidentally start the engine and not realize you are servicing it. This could result in a serious injury. • If you must service the engine while it is operating, remove all jewelry, tie back long hair, and keep your hands, other body parts and clothing away from moving / rotating parts.
PERIODIC MAINTENANCE A WARNING A CAUTION BURN HAZARD! • Keep your hands, and other body parts, away from hot engine surfaces such as the muffler, exhaust pipe, turbocharger and engine block during operation and shortly after you shut the engine down. These surfaces are extremely hot while the engine is operating and could seriously burn you. COOLANT HAZARD! • Wear eye protection and rubber gloves when you handle Long Life engine coolant.
PERIODIC MAINTENANCE CAUTION CAUTION • Only use diesel fuels recommended by Yanmar for the best engine performance, to prevent engine damage and to comply with EPA warranty requirements. • Only use clean diesel fuel.
PERIODIC MAINTENANCE CAUTION CAUTION • Only use the engine coolant specified. Other engine coolants may affect warranty coverage, cause an internal buildup of rust and scale and / or shorten engine life. • Prevent dirt and debris from contaminating engine coolant. Carefully clean the filler cap and the surrounding area before you remove the cap. • NEVER mix different types of engine coolants. This may adversely affect the properties of the engine coolant.
PERIODIC MAINTENANCE CAUTION CAUTION Make sure the engine is installed on a level surface. If a Yanmar Marine Engine is installed at an angle that exceeds the specifications stated in the Yanmar Marine Installation manuals, engine oil may enter the combustion chamber causing excessive engine speed, white exhaust smoke and serious engine damage. This applies to engines that run continuously or those that run for short periods of time.
PERIODIC MAINTENANCE CAUTION CAUTION NEVER allow engine oil or diesel fuel oil to contact the flexible rubber mount. Oil makes rubber deteriorate. It is important to perform daily checks as listed in the Operation Manual. 0000155en CAUTION Periodic maintenance prevents unexpected downtime, reduces the number of accidents due to poor engine performance and helps extend the life of the engine. 0000060enMarine • ALWAYS be environmentally responsible.
PERIODIC MAINTENANCE PRECAUTIONS The Importance of Periodic Maintenance Engine deterioration and wear occur in proportion to the length of time the engine has been in service and the conditions the engine is subjected to during operation. Periodic maintenance prevents unexpected downtime, reduces the number of accidents due to poor machine performance and helps extend the life of the engine.
PERIODIC MAINTENANCE Keep a Log of Engine Hours and Daily Checks Keep a log of the number of hours the engine is run each day and a log of the daily checks performed. Also note the date, type of repair (e.g., replaced alternator), and parts used for any service needed between the periodic maintenance intervals. Periodic maintenance intervals are every 50, 250, and 500 engine hours. Failure to perform periodic maintenance will shorten the life of the engine.
PERIODIC MAINTENANCE Pay particular attention to these important points: PERIODIC MAINTENANCE SCHEDULE • Replacing the engine oil • Replacing the lube oil filter • Replacing the fuel filter • Cleaning the air filter Note: Inspections are divided into two sections in accordance with who is responsible for performing the inspection: the user or the maker. Inspection and Maintenance See Inspection and Maintenance of EPA Emission-Related Parts on page 82.
PERIODIC MAINTENANCE c: Check : Replace z: Contact your authorized Yanmar marine dealer or distributor Periodic Maintenance Interval System Item Daily Every 50 hours or monthly whichever comes first Every 250 hours or one year whichever comes first Every 500 hours or 2 years whichever comes first c Whole Visual inspection of engine exterior Before starting Check for fuel leakage Before starting Check the fuel level and refill if necessary Before starting c c c Drain water and sediment from
PERIODIC MAINTENANCE c: Check : Replace z: Contact your authorized Yanmar marine dealer or distributor Periodic Maintenance Interval System Item Daily Every 50 hours or monthly whichever comes first Every 250 hours or one year whichever comes first Every 500 hours or 2 years whichever comes first c Visual inspection of cooling system Before starting Check the seawater outlet Before starting c Cooling System Seawater Circuit Check seawater pump belt for wear, replace if necessary Check seawa
PERIODIC MAINTENANCE c: Check : Replace z: Contact your authorized Yanmar marine dealer or distributor Periodic Maintenance Interval System Item Daily Check the alarm and indicators (if equipped) c Check or change power steering fluid c Every 50 hours or monthly whichever comes first Every 250 hours or one year whichever comes first Every 500 hours or 2 years whichever comes first z c Check for water or oil leakage Miscellaneous Items Before starting z Check shift cable adjustment Initial 5
PERIODIC MAINTENANCE PERIODIC MAINTENANCE PROCEDURES CAUTION After Initial 50 Hours of Operation Perform the following maintenance after the initial 50 hours of operation. • Change the Engine Oil and Replace the Engine Oil Filter • Check Shift Cable Adjustment • Adjust the Propeller Shaft Alignment (If Equipped with Marine Gear) Change the Engine Oil and Replace the Engine Oil Filter The engine oil on a new engine becomes contaminated from the initial break-in of internal parts.
PERIODIC MAINTENANCE 8. Install a new filter element. Ensure the filter fits snugly in the filter cap. 1. Turn engine OFF. 2. Remove engine cover. (2) (1) 9. Install the cap and filter assembly. Tighten cap by hand until the seal touches the housing. 10.Tighten to 25 N·m (225 in.-lb). CAUTION • Only use the engine oil specified. Other engine oils may affect warranty coverage, cause internal engine components to seize, or shorten engine life. 0003653 Figure 1 3.
PERIODIC MAINTENANCE 13.Approximately 10 minutes after stopping the engine, remove the oil dipstick and check the oil level. Add oil if the level is too low. Check Shift Cable Adjustment See your authorized Yanmar dealer or distributor. Adjust Propeller Shaft Alignment (If Equipped with Marine Gear) The flexible engine mounts are slightly compressed during initial engine operation and may cause misalignment between the engine and the propeller shaft.
PERIODIC MAINTENANCE Check the Battery Electrolyte Level (Serviceable Batteries Only) CAUTION A WARNING • ALWAYS be environmentally responsible. BURN HAZARD! • Batteries contain sulfuric acid. NEVER allow battery fluid to come in contact with clothing, skin or eyes. Severe burns could result. ALWAYS wear safety goggles and protective clothing when servicing the battery.
PERIODIC MAINTENANCE 4. If the level is lower than the minimum fill level (Figure 3, (1)), fill with distilled water (Figure 3, (2)) (available locally) up to the upper limit (Figure 3, (3)) of the battery. Every 250 Hours of Operation Perform the following maintenance every 250 hours of operation. • Drain the Fuel Tank • Replace the Fuel Pre-Filter • Replace the Fuel Fine Filter 2 3 1 0002388 Figure 3 Note: The maximum fill level is approximately 10 - 15 mm (3/8 - 9/16 in.) above the plates.
PERIODIC MAINTENANCE Drain the Fuel Tank A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • When you remove any fuel system component to perform maintenance (such as changing the fuel filter) place an approved container under the opening to catch the fuel. • NEVER use a shop rag to catch the fuel. Vapors from the rag are flammable and explosive. • Wipe up any spills immediately. • Wear eye protection.
PERIODIC MAINTENANCE Replace the Fuel Fine Filter CAUTION A DANGER FIRE AND EXPLOSION HAZARD! • Diesel fuel is flammable and explosive under certain conditions. • When you remove any fuel system component to perform maintenance (such as changing the fuel filter) place an approved container under the opening to catch the fuel. • NEVER use a shop rag to catch the fuel. Vapors from the rag are flammable and explosive. • Wipe up any spills immediately. • Wear eye protection.
PERIODIC MAINTENANCE Replace Fuel Filter / Water Separator Element A DANGER (3) FIRE AND EXPLOSION HAZARD! (2) (1) 0003648 Figure 5 3. Loosen inlet (Figure 5, (1)) and outlet (Figure 5, (2)) hose clamps and remove hoses from filter. 4. Remove bolts (Figure 5, (3)). 5. Remove mounting brackets and install on new filter. Ensure fuel flow direction is correct. IMPORTANT When replacing fuel filters, always pre-fill them with fresh, clean fuel to improve the system ability to be bled.
PERIODIC MAINTENANCE CAUTION • ALWAYS be environmentally responsible. • Follow the guidelines of the EPA or other governmental agencies for the proper disposal of hazardous materials such as engine oil, diesel fuel and engine coolant. Consult the local authorities or reclamation facility. • NEVER dispose of hazardous materials irresponsibly by dumping them into a sewer, on the ground or into ground water or waterways. • Failure to follow these procedures may seriously harm the environment. 0000013en 1.
PERIODIC MAINTENANCE 11.Connect water sensor connector. 12.Open the fuel tank cock. 13.Connect the battery negative (-) cable. 14.Bleed air from the fuel system and check for leaks. See Bleeding the Fuel System on page 41. (3) Change the Engine Oil and Replace Engine Oil Filter Element (2) To change engine oil and replace the engine oil filter element, see Change the Engine Oil and Replace the Engine Oil Filter on page 83.
PERIODIC MAINTENANCE 3. Check the seawater pump belt (Figure 8, (1)) and alternator belt (Figure 8, (2)) for wear, cracks or damage. 4. Replace if necessary. See your authorized Yanmar dealer or distributor. IMPORTANT Never use thread sealer or thread sealing tape when installing zinc anodes. Anodes must make good metal-to-metal contact to perform properly. 5. Install belt guard and connect battery negative (-) cable. 3. Install each anode using a new copper gasket and tighten to 25 N·m (18 ft-lb).
PERIODIC MAINTENANCE Clean or Replace Air Filter Element Check or Replace Rubber Hoses Check rubber water and fuel hoses for wear or damage. See your authorized Yanmar dealer or distributor for replacement. (2) (1) 0003672 Figure 10 Note: Washing kit WA250-355 is recommended for cleaning. Consult your authorized Yanmar dealer or distributor for more information. 1. Turn engine OFF. 2. Remove engine cover. 3. Remove clamp (Figure 10, (1)). 4. Remove air filter (Figure 10, (2)). 5.
PERIODIC MAINTENANCE Every 500 Hours of Operation Perform the following maintenance every 500 hours of operation. 3. Remove the coolant pressure cap from heat exchanger. 4. Remove the heat exchanger to access the cylinder block drain plug behind it. • Check the Fuel Pump and Fuel Lines (1) • Drain and Refill Closed Cooling System (Engine Coolant) Check the Fuel Pump and Fuel Lines See your authorized Yanmar dealer or distributor.
PERIODIC MAINTENANCE 7. Install heat exchanger. Ensure the drain cock (Figure 12, (1)) on the heat exchanger is closed. 8. Remove the pressure cap (Figure 12, (2)) from the heat exchanger. 9. Inspect the cap gasket and flange on the filler neck for damage. Replace if necessary. 10.Check the rubber hose connecting the coolant recovery tank to the heat exchanger. Be sure the hose is securely connected and there is no damage. 11.
BY Series Operation Manual TROUBLESHOOTING If a problem occurs, stop the engine immediately. Refer to the Problem / Symptom column in the Troubleshooting Chart to identify the problem.
TROUBLESHOOTING TROUBLESHOOTING CHART Starting Trouble Problem / Symptom Engine Will Not Crank Cause Action Discharged battery Charge / replace battery Blown fuse Replace fuse Defective starter motor See your authorized Yanmar dealer or distributor Loose wiring connections Tighten connections Electrical panel power circuit breaker is tripped Reset circuit breaker Check fuel level in tank No fuel to engine See your authorized Yanmar dealer or distributor Clean or replace clogged pre-filter (i
TROUBLESHOOTING Problem / Symptom Cause Action Worn piston rings / cylinders Blue Smoke Oil leak in turbocharger (oil present in intake manifold) See your authorized Yanmar dealer or distributor Damaged piston cooling nozzles Clogged intake air filter Replace or clean as necessary Incorrect valve timing See your authorized Yanmar dealer or distributor Defective (leaking) fuel injector Clean or replace clogged air filter Black Smoke Under Load Low charge air pressure See your authorized Yanmar d
TROUBLESHOOTING Engine Knocks Problem / Symptom Excess Fuel Injected Noise Changes with Engine Load Cause Action Defective fuel injector High fuel injection pressure See your authorized Yanmar dealer or distributor Incorrect or poor quality fuel Drain and refill tank with proper fuel Worn crankshaft / bearings See your authorized Yanmar dealer or distributor Broken piston /rings Low Power Output Problem / Symptom Cause Clogged air filter Action Clean or replace Leaking cylinder head gasket Mis
TROUBLESHOOTING Engine Overheat Problem / Symptom Cause Action Clogged seawater inlet Clean Low coolant level Fill with coolant / inspect for leaks Clogged seawater filter (if equipped) Clean Clogged hydraulic cooler Seawater pump worn or damaged Instrument Shows High Temperature Defective sensor / instrument Defective thermostat Damaged closed coolant pump See your authorized Yanmar dealer or distributor Combustion gas leakage (causes loss of coolant) Seawater pump belt slips or pump pulley loo
TROUBLESHOOTING TROUBLESHOOTING INFORMATION If your engine does not operate properly, refer to the troubleshooting chart or see your authorized Yanmar marine dealer or distributor.
TROUBLESHOOTING Diagnostic Trouble Code Table Code Part or System Mode Run Or Condition Engine Can Start Check Engine Alarm No Code Coolant Temp Under 0°C (32°F) 1000 rpm yes no No Code Coolant Temp Over 108°C (226°F) reduce yes alarm No Code Charge Air Temp Over 110°C (230°F) reduce yes no No Code Boost Pressure Reading 4BY - over 1.9 bar (27.5 psi) (relative) or 2.9 bar (42.0 psi) (absolute) 6BY - over 2.3 bar (33.3 psi) (relative*) or 3.3 bar (42.
TROUBLESHOOTING Mode Run Or Condition Engine Can Start Check Engine Alarm Throttle Signal Both throttle signals are missing / short circuit to Ground 1600 yes alarm Throttle Signal Throttle signal 1 is missing / short circuit to Ground reduce yes alarm Throttle Signal Both throttle signals are short circuited to B+ 1600 yes alarm Throttle Signal Throttle signal 1 short circuit to B+ reduce yes alarm P0182 Fuel Temperature Sensor Short circuit to B+ reduce yes alarm P0183 Fuel
TROUBLESHOOTING Code P0237 Part or System Mode Run Or Condition Engine Can Start Check Engine Alarm Boost Pressure Under 0.5 bar (7.3 psi) (absolute**) reduce yes alarm Boost Pressure Sensor No connection / short circuit to Ground reduce yes alarm Boost Pressure 4 bar (58.0 psi) (absolute**) reduce yes alarm P0238 Boost Pressure Sensor Short circuit to B+ reduce yes alarm P0261 Injector No. 1 Short circuit to B+ reduce yes alarm P0264 Injector No.
TROUBLESHOOTING Code Part or System Mode Run Or Condition Engine Can Start Check Engine Alarm P0672 Glow System - Glow Spark No. 2 Not connected, short circuit yes yes alarm P0673 Glow System - Glow Spark No. 3 Not connected, short circuit yes yes alarm P0674 Glow System - Glow Spark No. 4 Not connected, short circuit yes yes alarm P0675 Glow System - Glow Spark No. 5 Not connected, short circuit yes yes alarm P0676 Glow System - Glow Spark No.
LONG-TERM STORAGE BY Series Operation Manual If the engine is not to be used for an extended period of time, special measures should be taken to protect the coolant system, fuel system and combustion chambers from corrosion and the exterior from rusting. It is recommended that you see your authorized Yanmar marine dealer or distributor to prepare the engine for long-term storage. The engine can normally stand idle for up to six months.
LONG-TERM STORAGE 8. Waterproof the engine room to prevent rain or seawater from entering. 9. Charge the battery once a month to compensate for battery’s self-discharge. 10.Remove key from key switch and cover key switch with moisture cap (if equipped). Drain Seawater Cooling System IMPORTANT If water fails to drain from any open drain cock or port, remove the cock completely and probe the opening with a small piece of wire to loosen debris. (4) (3) (5 ) (1) (2) 0003659 (1) 0003655 Figure 1 1.
LONG-TERM STORAGE 3. Remove the seawater pump cover. See your authorized Yanmar dealer or distributor. 4. Remove zinc anodes from the heat exchanger (Figure 1, (4)) and charge air cooler (Figure 1, (5)) and allow water to drain from housings. (2) (1) 0003663 Figure 2 5. Engines having the optional high-rise exhaust elbow: Open drain cock (Figure 2, (1)) and allow water to drain. Remove and inspect zinc anode (Figure 2, (2)).
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BY Series Operation Manual SPECIFICATIONS ENGINE SPECIFICATIONS Engine Model 4BY150 / 150Z 4BY180 / 180Z 6BY220 / 220Z 6BY260 / 260Z Models numbers with no suffix letter are used in marine gear applications. Models having a “Z” suffix are used with stern drive.
SPECIFICATIONS Engine Model 4BY150 / 150Z 4BY180 / 180Z No. of Valves per Cylinder Valve Adjustment Turbocharger 6BY220 / 220Z Hydraulic self-adjusting MHI w/pneumatic wastegate Charge Air Cooler HOLSET w/pneumatic wastegate Seawater cooled Electrical System 12 V Starter 12 V / 2 kW (2.
SPECIFICATIONS Engine Model 4BY150 / 150Z 4BY180 / 180Z 6BY220 / 220Z 6BY260 / 260Z Operational Angles: Front-to-Rear and Left-to-Right Continuous 10° maximum Peak 20° maximum Height 721 mm (28.4 in.) Length (without marine gear) Stern Drive (front-to-middle of engine mount) 760 mm (29.9 in.) 942 mm (37.1 in.) Marine Gear (front-to-marine gear mounting face) 644 mm (25.4 in.) 825.5 mm (32.5 in.) Overall Length 861 mm (33.9 in.) 1001 mm (39.4 in.) Width 670 mm (26.4 in.
SPECIFICATIONS Tightening Fasteners Use the correct amount of torque when you tighten fasteners on the machine. Applying excessive torque may damage the fastener or component and not enough torque may cause a leak or component failure. Standard Torque Values Hexagon Bolts and Nuts Nominal Diameter Grade (Lubricated) 8.8 or 8 10.9 or 10 12.9 or 12 M4 2.7 N·m (24 in.-lb) 3.88 N·m (34.3 in.-lb) 4.6 N·m (41 in.-lb) M5 5.5 N·m (48.6 in.-lb) 8 N·m (71 in.-lb) 9.5 N·m (84 in.-lb) M6 9.5 N·m (84 in.
EPA WARRANTY USA ONLY BY Series Operation Manual YANMAR CO., LTD. LIMITED EMISSION CONTROL SYSTEM WARRANTY - USA ONLY The following EPA Warranty only applies to engines built on or after January 01, 2006 and labeled with the proper nameplate. THIS EMISSION WARRANTY APPLIES TO THE ENGINES CERTIFIED TO UNITED STATES EPA 40 CFR 94 AND SOLD BY YANMAR THAT ARE INSTALLED IN VESSELS FLAGGED OR REGISTERED IN THE UNITED STATES.
EPA WARRANTY USA ONLY It is recommended that any replacement parts used for maintenance, repair or replacement of emission control systems are Yanmar parts. The owner may elect to have maintenance, replacement or repair of the emission control components and systems performed by any repair establishment or individual and may elect to use parts other than Yanmar parts for such maintenance, replacement or repair.
EPA WARRANTY USA ONLY Owner’s Responsibility: Customer Assistance: As the Yanmar marine engine owner, you are responsible for the performance of the required maintenance listed in your Operation Manual. Yanmar recommends that you retain all documentation, including receipts, covering maintenance on your marine engine, but Yanmar cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
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Declaration of Conformity for Recreational Craft Propulsion Engine with the Exhaust and Noise emission requirements of Directive 94/25/EC as amended by 2003/44/EC (To be completed by manufacturer of outboard or inboard engines with integral exhaust) Name of engine manufacturer: Yanmar Co., Ltd. Street: 1-32 Town: Chayamati, Kitaku, Osaka-City Post Code: 530-8311 Country: Japan Name of Authorised Representative ( if applicable): Yanmar Marine International B.V.
