Yanmar YM Series Operation Manual
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Yanmar YM Series Operation Manual

Yanmar YM Series Operation Manual

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OPERATION MANUAL
MARINE ENGINES
YM
2YM15
3YM20
3YM30AE
English
English
en

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Harry
April 6, 2025

Yanmar 1500 Air filter part #

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Mr. Anderson
May 14, 2025

The air filter part number for Yanmar 1500 is 124756-12510.

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Summary of Contents for Yanmar YM Series

  • Page 1 OPERATION MANUAL MARINE ENGINES 2YM15 3YM20 3YM30AE English English...
  • Page 2 We reserve the right to make any change at any time without notice. Yanmar and are registered trademarks of YANMAR CO., LTD. in Japan, the United States and/or other countries. All Rights Reserved:...

  • Page 3: Table Of Contents

    Before You Operate..........4 During Operation and Maintenance..... 4 LOCATION OF SAFETY DECALS ......8 PRODUCT OVERVIEW ........... 9 YANMAR YM SERIES FEATURES AND APPLICATIONS ............9 New Engine Break-In......... 10 COMPONENT IDENTIFICATION ......11 Right Side (Viewed from Flywheel) - 2YM15 ..11 Left Side (Viewed from Flywheel) - 2YM15 ..
  • Page 4 Shifting the Engine ..........42 CAUTIONS DURING OPERATION......43 SHUTTING DOWN THE ENGINE ......44 Normal Shutdown..........44 Emergency Shutdown ........45 CHECKING THE ENGINE AFTER OPERATION..46 PERIODIC MAINTENANCE ........... 47 INTRODUCTION ............47 SAFETY PRECAUTIONS......... 47 YM Series Operation Manual...
  • Page 5 The Importance of Daily Checks ....... 49 Keep a Log of Engine Hours and Daily Checks 49 Yanmar Replacement Parts ......49 Tools Required ..........49 Ask Your Authorized Yanmar Marine Dealer or Distributor for Help..........49 Tightening Fasteners ......... 50 EPA MAINTENANCE REQUIREMENTS....51 EPA Requirements for USA and Other Applicable Countries..........
  • Page 6 SYSTEM DIAGRAMS............. 87 PIPING DIAGRAMS ..........87 WIRING DIAGRAMS ..........92 WARRANTY USA ONLY..........95 YANMAR CO., LTD. LIMITED EMISSION CONTROL SYSTEM WARRANTY - USA ONLY ..95 YANMAR EMISSION CONTROL SYSTEM WARRANTY STATEMENT ..........97 YOUR WARRANTY RIGHTS AND OBLIGATIONS: . 97 Yanmar’s warranty coverage: ......

  • Page 7: Introduction

    • Make sure this manual is transferred to manufacture. subsequent owners. This manual should To help you enjoy your Yanmar YM series be considered a permanent part of the engine for many years to come, please engine and remain with it.

  • Page 8: Record Of Ownership

    INTRODUCTION RECORD OF OWNERSHIP Take a few moments to record the information you need when you consult Yanmar for service, parts or documentation. Engine Model: __________________________________________________________ Engine Serial No.: _______________________________________________________ Date Purchased: ________________________________________________________ Dealer:_________________________________________________________________ Dealer Phone:___________________________________________________________ YM Series Operation Manual...

  • Page 9: Safety

    SAFETY Yanmar considers safety of great DANGER importance and recommends that anyone that comes into close contact with its Indicates a hazardous situation which, products, such as those who install, if not avoided, will result in death or operate, maintain or service Yanmar serious injury.

  • Page 10: Safety Precautions

    • Safety signs and labels are additional reminders for safe operating and maintenance techniques. Store any containers containing fuel or • Consult authorized Yanmar Marine other flammable products in a dealer or distributor for additional well-ventilated area, away from any training.
  • Page 11 Burn Hazard Some of the engine surfaces become very hot during operation and shortly after shutdown. Keep hands and other body parts away from hot engine surfaces. YM Series Operation Manual...
  • Page 12 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...
  • Page 13 This water could cause seizure of the non-running engine(s). Consult authorized Yanmar Marine dealer or distributor for a complete explanation of this condition. If you have an installation with two or three...

  • Page 14: Location Of Safety Decals

    SAFETY LOCATION OF SAFETY DECALS Figure 1, show the location of safety decals on Yanmar YM series marine engines. YM Engines 128296-07350 051101-01X00 Figure 1 1–Part Number: 128990-07270 2–Part Number: 128296-07350 3–Part Number: 196630-12980 YM Series Operation Manual...

  • Page 15: Product Overview

    The 3YM20 is a 3-cylinder engine and is The YM series engines are designed to be naturally aspirated. operated at maximum throttle for less than The 3YM30AE is a 3-cylinder engine and 5% of total engine time (30 minutes out of is naturally aspirated.

  • Page 16: New Engine Break-In

    • With the clutch in NEUTRAL, accelerate lifetime. from the low-speed position to the high-speed position briefly. A new Yanmar diesel engine must be operated at suitable speeds and power • Repeat this process five times. settings during the break-in period to make...

  • Page 17: Component Identification

    2 – Intake Manifold 3 – Fuel Filter 4 – Fuel Injection Pump 5 – Engine Oil Dipstick 6 – Engine Oil Filler Cap 7 – Fuel Feed Pump 8 – Engine Oil Filter 9 – Marine Gear YM Series Operation Manual...

  • Page 18: Right Side (Viewed From Flywheel) - 3Ym20

    2 – Intake Manifold 3 – Fuel Filter 4 – Fuel Injection Pump 5 – Engine Oil Dipstick 6 – Engine Oil Filler Cap 7 – Fuel Feed Pump 8 – Engine Oil Filter 9 – Marine Gear YM Series Operation Manual...

  • Page 19: Right Side (Viewed From Flywheel) - 3Ym30Ae

    3 – Fuel Filter 8 – Alternator 4 – Fuel Injection Pump 5 – Engine Oil Dipstick 6 – Engine Oil Filler Cap 7 – Fuel Feed Pump 8 – Engine Oil Filter 9 – Marine Gear YM Series Operation Manual...

  • Page 20: Nameplates

    PRODUCT OVERVIEW NAMEPLATES The marine gear nameplate (Figure 8) is attached to the marine gear. Check the The nameplates of Yanmar YM series marine gears model, gear ratio, oil used engines are shown in Figure 7. Check the and serial number.

  • Page 21: Function Of Major Components

    See Nameplates on page 14 Starter Starter motor for the engine; powered by the battery. Alternator Driven by a belt and generates electricity and charges the battery. Engine Oil Dipstick Gauge stick for checking the engine oil level. YM Series Operation Manual...

  • Page 22: Control Equipment

    It becomes red-hot, 042566-01X00 042564-01X00 facilitating fuel ignition. This assists starting in cold weather. Power switch Stop switch Pushing this switch turns on or Pushing this switch stops the off the power. engine. 042567-01X00 042565-01X00 YM Series Operation Manual...
  • Page 23 Stop operation to avoid damage to the engine. Check the oil level and troubleshoot the lubrication system. Water in Sail Drive Seal Indicator and Alarm When water is detected between the seals of the sail drive, the indicator will light and the alarm will sound. YM Series Operation Manual...
  • Page 24 Next, press the right button to show the pressure display. This feature is not available on this Return to hourmeter 051899-00EN00 engine. Figure 11 Press again to show the battery voltage. Pressing the button once more returns the display to the initial hourmeter. YM Series Operation Manual...
  • Page 25 Press the left button again to go from Select the “ENGINE” screen to the “EXIT” screen. Exit setup After confirming the display, press the right button to re-start the panel and return to the hourmeter display. Return to LCD control 043719-02EN03 Figure 12 YM Series Operation Manual...
  • Page 26 Engine lubricating oil pressure lamp LCD display Yanmar Full display Hourmeter NOTICE When the warning devices are activated and normal operation is impossible, stop the engine and do not use it until the problem has been solved. YM Series Operation Manual...
  • Page 27 The maximum current of this output terminal is 3 A. Do not use a current higher than 3 A. For the content of the output terminal, refer to the Wiring Diagrams on page 92. Figure 3 Buzzer F1A - 3 AMP Fuse ACC Output 043801-00E00 Figure 13 YM Series Operation Manual...

  • Page 28: Single-Handle Remote Control Head

    PRODUCT OVERVIEW Single-Handle Remote Control Head Figure 4 0004511 Figure 15 Note: Yanmar recommends the use of 0004504 a single-handle type for the Figure 14 remote control system. If only a Note: Direction of travel will vary two-handle type is available in...

  • Page 29: Before You Operate

    SAFETY PRECAUTIONS This section of the Operation Manual Before performing any operations within describes the diesel fuel, engine oil and this section, review the Safety section on engine coolant specifications and how to page 3. replenish them. YM Series Operation Manual...

  • Page 30: Diesel Fuel

    Only use diesel fuels recommended by • In Europe, biodiesel fuels must comply Yanmar for the best engine performance, with the European Standard to prevent engine damage and to comply EN590-2009, EN14214.
  • Page 31 • Ash content not to exceed 0.01% by volume. • Carbon residue content not to exceed 0.35% by volume. Less than 0.1% is preferred. • Total aromatics content should not exceed 35% by volume. Less than 30% is preferred. YM Series Operation Manual...
  • Page 32 2 – Drain Cock 3 – Fuel Line to Engine Install a drain cock (Figure 2, (2)) at the bottom of the fuel tank to remove water and contaminants from the sediment bowl (Figure 2, (1)). YM Series Operation Manual...

  • Page 33: Filling The Fuel Tank

    Hold the hose nozzle firmly against the filler port while filling. This prevents static electricity buildup which could cause sparks and ignite fuel vapors. 4. Stop fueling when the gauge shows the fuel tank is full. YM Series Operation Manual...

  • Page 34: Bleeding The Fuel System

    0004801 Figure 4 1 – Air Bleed Screw 2 – Bracket 3 – O-Ring 4 – Fuel Filter Element 5 – Fuel Filter Housing 6 – Retaining Ring YM Series Operation Manual...

  • Page 35: Engine Oil

    Engine Oil Specifications is being operated. See Engine Oil Viscosity Figure 5. NOTICE • Yanmar does not recommend the use of engine oil "additives." Only use the engine oil specified. Other engine oils may affect warranty coverage, cause internal engine components to seize and / or shorten engine life.

  • Page 36: Checking The Engine Oil

    If you intend to operate your equipment at (Figure 6, (5)) lines on the dipstick. temperatures outside the limits shown, you must consult your authorized Yanmar 5. Add oil if necessary. See Adding Marine dealer or distributor for special Engine Oil on page 30.

  • Page 37: Marine Gear Or Sail Drive Oil

    Refer to the Sail Drive Operation Manual for the procedure for checking and filling 1 – Dipstick the sail drive oil. (Filler cap combined type) 2 – Marine Gear Filler Port 3 – Upper Limit 4 – Lower Limit (Dipstick end) YM Series Operation Manual...

  • Page 38: Engine Coolant

    Never temperature range. mix different types or brands of LLC, as a harmful sludge may form. Mixing different brands of antifreeze may cause chemical reactions, and may make the antifreeze useless or cause engine problems. YM Series Operation Manual...

  • Page 39: Checking And Adding Coolant

    Allow the engine to cool down before you attempt to remove the cap. 051170-00X00 Figure 9 1 – Coolant Tank / Heat Exchanger 2 – Seawater Drain Cock 3 – Coolant Drain Plug YM Series Operation Manual...
  • Page 40 7. Remove reservoir cap (Figure 12, (4)) to add coolant if necessary. Do not add water. 8. Replace the filler cap and tighten it firmly. Failure to do so will cause coolant to leak. Reservoir Capacity 0.8 L (0.8 qt) YM Series Operation Manual...

  • Page 41: Cranking The Engine

    (Figure 13) on the back of the fuel pump. This stops the fuel supply. When you push the start switch on the instrument panel while the emergency button is pushed in, the starter operates and the engine cranks. Crank the engine 5 seconds. YM Series Operation Manual...
  • Page 42 V-ribbed belt, propeller shaft, etc. serious injury may result. Check to see that no tools, pieces of cloth, etc. are left on or around the engine. YM Series Operation Manual...

  • Page 43: Engine Operation

    Before performing any operations within describes the diesel fuel, engine oil and this section, review the Safety section on engine coolant specifications and how to page 3. replenish them. It also describes the daily engine checkout. YM Series Operation Manual...
  • Page 44 If the alarm indicater with audible alarm WARNING fails to display and go out about 3 seconds after the ignition switch is turned on, Fire and consult authorized Yanmar Marine dealer Explosion Hazard or distributor for service before operating Never jump-start the the engine engine.

  • Page 45: Starting The Engine

    ENGINE OPERATION STARTING THE ENGINE NOTICE 1. Open the seacock (if equipped). • Consult your authorized Yanmar Marine 2. Open the fuel tank cock. engine dealer or distributor if the engine will be operated outside of this standard 3. Put remote control handle in temperature range.

  • Page 46: If The Engine Fails To Start

    Crank for 10 seconds at a time until the engine starts. When the engine does start, stop the engine immediately and turn off the power switch. Be sure to re-open the seacock and restart the engine. Operate the engine normally. YM Series Operation Manual...

  • Page 47: After The Engine Has Started

    For troubleshooting assistance, see Troubleshooting After Starting on page 73 or Troubleshooting Chart on page 75 . If necessary, consult authorized Yanmar dealer or distributor. YM Series Operation Manual...

  • Page 48: Remote Control Handle Operation

    • Ensure the boat is clear of all obstacles forward and aft. • Quickly shift to the FORWARD position then back to the NEUTRAL position. • Observe whether the boat moves in the direction you expect. YM Series Operation Manual...

  • Page 49: Cautions During Operation

    • Are there abnormal vibrations or noise? Replenish diesel fuel before leaving the dock to avoid running out of fuel during operation. • When operating the engine at low speed for long periods of time, race the engine once every 2 hours. YM Series Operation Manual...

  • Page 50: Shutting Down The Engine

    This will generate NOTICE higher exhaust temperatures, which will For maximum engine life, Yanmar help clean out hard carbon deposits, recommends that when shutting the maintaining engine performance and engine down, you allow the engine to prolonging the life of the engine.

  • Page 51: Emergency Shutdown

    If the engine cannot be shut down by the stop switch on the panel, stop the engine by pushing the button (Figure 4, (1)) at the back of the stop solenoid (Figure 4, (2)). YM Series Operation Manual...

  • Page 52: Checking The Engine After Operation

    • If there is a risk of freezing, drain the seawater system. See Drain Seawater Cooling System on page 78. • At temperatures below 0°C (32°F), drain seawater system and connect the engine heater (if equipped). YM Series Operation Manual...

  • Page 53: Periodic Maintenance

    Always use the engine lifting eyes when lifting the engine. Additional equipment is necessary to lift the marine engine and marine gear together. Always use lifting equipment with sufficient capacity to lift the marine engine. YM Series Operation Manual...
  • Page 54 Any • When welding is completed, alterations to this engine may void its reconnect the alternator and engine warranty. Be sure to use Yanmar genuine control unit prior to reconnecting the replacement parts. batteries. Entanglement Hazard...

  • Page 55: Precautions

    Yanmar Replacement Parts operating in an enclosed area. All internal combustion engines create Yanmar recommends that you use carbon monoxide gas during operation. genuine Yanmar parts when replacement Accumulation of this gas within an parts are needed.

  • Page 56: Tightening Fasteners

    11.0 ± 1.0 26.0 ± 3.0 50.0 ± 5.0 90.0 ± 10.0 140.0 ± 10.0 230.0 ± 10.0 Torque ft-lb 8.0 ± 0.7 19.0 ± 2.1 37.0 ± 3.6 66.0 ± 7.2 103 ± 7.2 170 ± 7.2 YM Series Operation Manual...

  • Page 57: Epa Maintenance Requirements

    • Ambient temperature: -20°C to +40°C (-4°F to +104°F) • Relative humidity: 80% or lower The diesel fuel should be: • ASTM D975 No. 1-D S15, No. 2-D S15 or equivalent (minimum of cetane No. YM Series Operation Manual...

  • Page 58: Installing Sample Port

    3. To allow ready access to the sample port, the connection should be located, if possible given the constraints of vessel design, approximately 0.6 to 1.8 m (2 to 6 ft) above a deck or walkway; YM Series Operation Manual...

  • Page 59: Periodic Maintenance Schedule

    Consult authorized Yanmar Marine dealer or distributor for assistance when checking items marked with a ●. YM Series Operation Manual...
  • Page 60 PERIODIC MAINTENANCE : Check or Clean : Replace ●: Consult your authorized Yanmar Marine dealer or distributor Periodic Maintenance Interval Every Every Every Every Every Before 1000 Starting hours hours hours hours hours Initial or six or one or one...
  • Page 61 PERIODIC MAINTENANCE : Check or Clean : Replace ●: Consult your authorized Yanmar Marine dealer or distributor Periodic Maintenance Interval Every Every Every Every Every Before 1000 Starting hours hours hours hours hours Initial or six or one or one...

  • Page 62: Inspection And Maintenance Of Emission-Related Parts

    Check turbocharger adjustment (if equipped) Check electronic engine control unit and its associated sensors and actuators (if equipped) Note: Yanmar recommends that the inspection and maintenance items shown above be performed at an authorized Yanmar dealer or distributor. YM Series Operation Manual...

  • Page 63: Periodic Maintenance Procedures

    6. Check the electrical harnesses for Before you head out for the day, make cracks, abrasions, and damaged or sure the Yanmar engine is in good corroded connectors. operating condition. 7. Check hoses for cracks, abrasions, and damaged, loose or corroded clamps.

  • Page 64: After Initial 50 Hours Of Operation

    Control Equipment on page 16. Preparing Fuel, Oil and Coolant in Reserve Prepare sufficient fuel for the days operation. Always store engine oil and coolant in reserve (for at least one refill) onboard, to be ready for emergencies. YM Series Operation Manual...
  • Page 65 4. Perform a trial run and check for oil leaks. 5. Approximately 10 minutes after stopping the engine, remove the oil dipstick and check the oil level. Add oil if the level is too low. YM Series Operation Manual...
  • Page 66 3. Perform a trial run and check for oil leaks. 4 – Alternator Adjusting Bolt 4. Approximately 10 minutes after Note: 3YM30AE shown. stopping the engine, remove the oil dipstick and check the oil level. Add oil if the level is too low. YM Series Operation Manual...
  • Page 67 Improper adjustment Figure 3 will cause the engine to run noisily, resulting in poor engine performance and engine damage. Consult authorized Yanmar Marine dealer or distributor to adjust the intake / exhaust valve clearance. 0004798 Figure 4 1 –...
  • Page 68 Consult your authorized control lever. Yanmar Marine dealer or distributor. Adjusting Clutch Remote Control Cable Figure 4 0004799 Figure 5 1 – Marine Gear 2 –...

  • Page 69: Every 50 Hours Of Operation

    3. Loosen the retaining ring (Figure 6, (6)), remove the filter housing (Figure 6, (5)) and drain off any water or sediment collected inside. 4. After draining, tighten the air bleed screw (Figure 6, (1)). YM Series Operation Manual...
  • Page 70 1. Make sure the engine is off. 2. Turn the battery switch to OFF (if equipped) or disconnect the negative (-) battery cable. 3. Remove the plugs and check the electrolyte level in all cells. YM Series Operation Manual...

  • Page 71: Every 100 Hours Of Operation

    • Changing the Engine Oil Changing the Sail Drive Gear Oil Changing the Engine Oil Refer to the Sail Drive Operation Manual See Changing the Engine Oil on page 59. for the procedure for changing gear oil. YM Series Operation Manual...

  • Page 72: Every 250 Hours Of Operation

    • Adjusting the Alternator V-ribbed belt Tension • Cleaning the Breather Pipe Figure 7 • Checking the Wiring Connectors 0004804 Figure 8 1 – Housing 2 – Retaining Ring YM Series Operation Manual...
  • Page 73 5. Apply a thin film of clean diesel fuel to the seawater pump are necessary, consult the sealing surface of the new filter your Yanmar Marine dealer or distributor. gasket. 6. Clean the inside of the housing The seawater pump turns in the direction thoroughly, install the O-ring and as shown in Figure 9.
  • Page 74 33 . and seawater passages. 3. If the mixing elbow is damaged, repair or replace it. Consult authorized Yanmar Marine dealer or distributor. 4. Inspect the gasket and replace if necessary. Replace the mixing elbow with a new one every 500 hours or 2 years, whichever comes first, even if no damage is found.

  • Page 75: Every 1000 Hours Of Operation

    V-ribbed belt Tension on page 60. 1000 hours or 4 years of operation, whichever comes first. Cleaning the Breather Pipe • Checking the Fuel Injection Timing Consult authorized Yanmar Marine dealer or distributor. • Checking the Fuel Injector Spray Pattern Checking the Wiring Connectors •...
  • Page 76 • Heat Exchanger 4 – Diaphragm 5 – Rocker Arm Cover • Pressure Cap 6 – Breather Baffle Consult authorized Yanmar Marine dealer 7 – Baffle Plate or distributor. 8 – Intake Silencer (air cleaner) Replacing the Alternator V-ribbed Checking the Diaphragm Assembly...
  • Page 77 See Checking and Adjusting the Remote Control Cables on page 61. Adjusting the Propeller Shaft Alignment Consult authorized Yanmar Marine dealer or distributor. Tightening All Major Nuts and Bolts See Tightening Fasteners on page 50 or consult authorized Yanmar Marine dealer or distributor.
  • Page 78 PERIODIC MAINTENANCE This Page Intentionally Left Blank YM Series Operation Manual...

  • Page 79: Troubleshooting

    If any abnormal sounds are heard, stop the engine and inspect for cause. Alarm sounds during operation. If the alarm sounds during operation, lower the engine speed immediately, check the warning lamps and stop the engine for repairs. YM Series Operation Manual...

  • Page 80: Troubleshooting Information

    Troubleshooting Chart on page Is there sufficient fuel in the fuel tank? 75 or consult authorized Yanmar Marine dealer or distributor. Refill fuel in advance to avoid running out of fuel. If the tank runs out of fuel, bleed Supply the authorized Yanmar Marine the fuel system.

  • Page 81: Troubleshooting Chart

    Marine dealer or distributor. Faulty Warning Devices Do not operate the engine if alarm devices are not repaired. See you authorized Yanmar Marine dealer or distributor. Serious accidents may result if abnormalities are not identified due to faulty indicators or alarm.
  • Page 82 24 Faulty spraying of fuel injector. Consult authorized Yanmar Marine dealer or distributor. Fuel injection timing off. Consult authorized Yanmar Marine dealer or distributor. Excessive diesel fuel consumption. Consult authorized Yanmar Marine dealer or distributor. YM Series Operation Manual...

  • Page 83: Long-Term Storage

    6 months. If it remains unused for longer than this, please consult your authorized 1. Wipe off any dust or oil from the outside Yanmar Marine dealer or distributor. of engine. Before performing any storage procedures 2. Drain water from fuel filters.

  • Page 84: Drain Seawater Cooling System

    1 – Coolant Tank / Heat Exchanger 4. Install the cover and tighten bolts. 2 – Coolant Drain Plug 5. Close all drain cocks. 3 – Seawater Drain Plug 4 – Seawater Pump 5 – Coolant Pump YM Series Operation Manual...
  • Page 85 If the coolant without LLC is not removed, it may freeze and damage parts of the cooling system or engine when ambient temperature is below 0 °C (32 °F). YM Series Operation Manual...
  • Page 86 LONG-TERM STORAGE This Page Intentionally Left Blank YM Series Operation Manual...

  • Page 87: Specifications

    SPECIFICATIONS PRINCIPAL ENGINE SPECIFICATIONS YM Series Operation Manual...

  • Page 88: 2Ym15 Engine Specifications

    *** The effective amount of oil shows the difference in maximum scale of the dipstick and minimum scale. Note: Density of fuel: 0.835 to 0.845 g/cm at 15°C. Fuel temperature at the inlet of the fuel injection pump. 1hp metric = 0.7355 kW YM Series Operation Manual...

  • Page 89: 3Ym20 Engine Specifications

    *** The effective amount of oil shows the difference in maximum scale of the dipstick and minimum scale. Note: Density of fuel: 0.835 to 0.845 g/cm at 15°C. Fuel temperature at the inlet of the fuel injection pump. 1hp metric = 0.7355 kW YM Series Operation Manual...

  • Page 90: 3Ym30Ae Engine Specifications

    *** The effective amount of oil shows the difference in maximum scale of the dipstick and minimum scale. Note: Density of fuel: 0.835 to 0.845 g/cm at 15°C. Fuel temperature at the inlet of the fuel injection pump. 1hp metric = 0.7355 kW YM Series Operation Manual...

  • Page 91: Marine Gear And Sail Drive Specifications

    0.15 L (0.16 qt) (Effective) Cooling System Air cooling by fan on flywheel Weight 9.8 kg (21.6 lb) 30 kg (66.1 lb) *At continuous power engine speed 3489 min **At continuous power engine speed 3101 min YM Series Operation Manual...
  • Page 92 SPECIFICATIONS This Page Intentionally Left Blank YM Series Operation Manual...

  • Page 93: System Diagrams

    SYSTEM DIAGRAMS PIPING DIAGRAMS Piping diagrams and wiring diagrams are provided for reference only. Consult your authorized Yanmar Marine dealer or distributor for the most current diagrams. Notation Description Screw Joint (Union) Flange Joint Eye Joint Insertion Joint Drilled Hole...
  • Page 94 SYSTEM DIAGRAMS Figure 12YM15 with KM2P-1 Marine Gear 1 2 3 4 12 13 16 17 ( 36 ) ( 38 ) ( 37 ) 026475-00X Figure 1 YM Series Operation Manual...
  • Page 95 31 – Hot Water Connection Inlet (R3/8) 32 – Coolant Temperature Switch 33 – Engine Oil Pump 34 – Pressure Control Valve 35 – Diesel Fuel 36 – To Oil Pan 37 – To Camshaft 38 – From Cylinder Head YM Series Operation Manual...
  • Page 96 SYSTEM DIAGRAMS Figure 23YM20 and 3YM30AE with KM2P-1 Marine Gear 026476-00X Figure 2 YM Series Operation Manual...
  • Page 97 19 – Hot Water Connection Inlet 20 – Coolant Temperature Switch 21 – Engine Oil Pump 22 – Pressure Control Valve 23 – Fuel Filter 026533-00X 026532-00X 24 – To Oil Pan 25 – To Camshaft 26 – From Cylinder Head YM Series Operation Manual...

  • Page 98: Wiring Diagrams

    L = 1 + 2 + 3 m (ft) 15 (0.023) < 0.86 (0.26) 20 (0.031) < 1.3 (0.40) 30 (0.046) < 2.3 (0.70) 40 (0.062) < 2.8 (0.85) 50 (0.077) < 3.5 (1.07) 60 (0.093) < 4.1 (1.25) YM Series Operation Manual...
  • Page 99 SYSTEM DIAGRAMS Figure 32YM15, 3YM20, 3YM30AE - B20 Type Instrument Panel Figure 3 YM Series Operation Manual...
  • Page 100 33 – Coolant temperature switch 34 – Engine oil pressure switch 35 – Alternator 36 – Ground 37 – Water in sail drive seal sensor (Sail drive only) 38 – Details of coupler (Wire harness, view from A-A) YM Series Operation Manual...

  • Page 101: Warranty Usa Only

    WARRANTY USA ONLY YANMAR CO., LTD. LIMITED EMISSION CONTROL SYSTEM WARRANTY - USA ONLY EPA and ARB Emission Control Label EPA and ARB Emission Control Label for 2YM15 for 3YM30AE EMISSION CONTROL INFORMATION EMISSION CONTROL INFORMATION THIS ENGINE COMPLIES WITH U.S.EPA MARINE AND CALIFORNIA OFF-ROAD THIS ENGINE COMPLIES WITH U.S.EPA MARINE AND CALIFORNIA OFF-ROAD...
  • Page 102 WARRANTY USA ONLY This Page Intentionally Left Blank YM Series Operation Manual...

  • Page 103: Yanmar Emission Control System Warranty Statement

    AND OBLIGATIONS: The 2017, 2018 or 2019 model year marine CI engines are warranted for a Yanmar Co., Ltd. (Yanmar) is pleased to period of five (5) years or 3000 hours of explain emission control system warranty operation, whichever occurs first, for all...

  • Page 104: Warranted Parts

    YANMAR EMISSION CONTROL SYSTEM WARRANTY STATEMENT Warranted Parts: This warranty is transferable to each subsequent purchaser for the duration of This warranty covers engine components the warranty period. Yanmar recommends that are a part of the emission control that repair or replacement of any...

  • Page 105: Owners Warranty Responsibilities

    YANMAR EMISSION CONTROL SYSTEM WARRANTY STATEMENT Owners Warranty Responsibilities: • As the marine CI engine owner, you are responsible for the performance of the required maintenance listed in your operation manual. Yanmar recommends that you retain all receipts covering maintenance on your marine CI engine,...

  • Page 106: Maintenance Log

    YANMAR EMISSION CONTROL SYSTEM WARRANTY STATEMENT Maintenance Log Stamp or Date Operating Hours Maintenance Performed Dealer Name Signature YM Series Operation Manual...
  • Page 107 YANMAR EMISSION CONTROL SYSTEM WARRANTY STATEMENT Stamp or Date Operating Hours Maintenance Performed Dealer Name Signature YM Series Operation Manual...
  • Page 108 Declaration of Conformity for Recreational Craft Propulsion Engines (inboard engines and stern drive engines without integral exhaust) with the requirements of Directive 2013/53/EU (To be completed by manufacturer or, if mandated, authorised representative) Name of engine manufacturer: Yanmar Co., Ltd. Address: 1-32, Chayamachi, Kita-ku, Osaka Post Code: 530-8311...
  • Page 109 Specify the harmonised standards Essential requirements or other reference documents used (reference to relevant articles in (with year of publication like “EN ISO 8666:2002”) Annex IB & IC of the Directive) Tick only one box per line All lines right of ticked boxes must be filled in Annex I.A - Design and Construction of products Inboard Engine (Annex I A.
  • Page 110 This Page Intentionally Left Blank...
  • Page 111 2YM15, 3YM20, 3YM30AE 1st edition: November 2007 5th edition: February 2015 6th edition: January 2017 7th edition: November 2017 8th edition: May 2018 Issued by: YANMAR CO., LTD. Large Power Products Management Division Edited by: YANMAR TECHNICAL SERVICE CO., LTD.
  • Page 112 YANMAR CO., LTD. 0AYMM-EN0027 https://www.yanmar.com 30.5(YTSK)

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