Yanmar 2YM15/3YM20/3YM30 operation manual.

Introduction...................... 1
Record of ownernership ............3
Safety Precautions ............... 4
General Information .............. 4
Before You Operate................ 4
During Operation and Maintenance.. 5
Location of Safety Decals .........8
Product Overview ..................9
Yanmar YM Features and Applications... 9
New Engine Break-In................... 10
Component Identification ............. 11
Right Side (from Flywheel) - 2YM15.....11
Left Side (from Flywheel) - 2YM15 ......11
Right Side (from Flywheel) - 3YM20..... 12
Left Side (from Flywheel) - 3YM20 ..... 12
Right Side (from Flywheel) - 3YM30..... 13
Left Side (from Flywheel) - 3YM30 ..... 13
Location of Nameplates .................14
Function of Major Components ...........15
Control Equipment ......................16
Instrument Panel (Optional)............ 16
Single-Lever Remote Control Handle..... 20
Before You Operate......................21
Safety Precautions .....................21
Introduction ...........................21
Diesel Fuel ............................22
Diesel Fuel Specifications ............ 22
Filling the Fuel Tank ................. 25
Bleeding the Fuel System............... 26
Engine Oil ............................ 27
Engine Oil Specifications ............. 27
Engine Oil Viscosity ...................28
Checking the Engine Oil................ 28
Adding Engine Oil ..................... 29Exclusions: ......................................... 101
Owners Responsibility: ................................ 101
Customer Assistance:................................... 102
Emission System Warranty ...............................103
Non-Road Emission System Warranty...................... 103
Yanmar Co., Ltd. Limited Emission Control
System Warranty - USA Only ............................ 103
Maintenance Log........................................ 106
Marine Gear or Sail Drive Oil...........29
Marine Gear Oil Specifications......... 29
Sail Drive Oil Specifications - SD20....29
Checking Marine Gear Oil............... 30
Adding Marine Gear Oil................. 30
Checking and Adding Sail Drive Oil .....30
Engine Coolant .........................31
Engine Coolant Specifications ......... 31
Checking and Adding Coolant.............31
Cranking the Engine ................... 34
Engine Operation .......................35
Safety Precautions .....................35
Introduction........................... 36
Starting the Engine ................... 37
Restarting After Starting Failure...... 37
Starting at Low Temperatures........... 38
After the Engine has Started .......... 38
Remote Control Handle Operation ........39
Acceleration and Deceleration ..........39
Shifting the Engine ....................40
Shutting Down the Engine ...............40
Emergency Shutdown..................... 41
Checking the Engine After Operation ... 42
Periodic Maintenance ...................43
Safety Precautions .....................43
Introduction........................... 45
Precautions.............................45
The Importance of Periodic Maintenance .45
Performing Periodic Maintenance ....... 45
The Importance of Daily Checks ........ 45
Keep a Log of Engine Hours and Daily Checks . 46
Yanmar Replacement Parts .................... 46
Tools Required............................... 46
Ask Your Authorized Yanmar Marine Dealer or
Distributor for Help......................... 46
Tightening Fasteners .........................47
EPA Maintenance Requirements .................48
EPA Requirements for USA and Other
Applicable Countries ........................ 48
Conditions to Ensure Compliance with EPA
Emission Standards ...........................48
Inspection and Maintenance.............................. 48
Installing Sample Port...................................48
Periodic Maintenance Schedule........................... 50
Inspection and Maintenance of EPA
Emission-Related Parts ................................. 54
Periodic Maintenance Procedures ........................ 55
Daily Checks............................................ 55
After Initial 50 Hours of Operation .................... 56
Every 50 Hours of Operation ............................ 60
Every 100 Hours of Operation ........................... 62
Every 150 Hours of Operation ........................... 63
Every 250 Hours of Operation ........................... 63
Every 1000 Hours of Operation .......................... 66
Troubleshooting ........................................ 69
Safety Precautions ............................................ 69
Troubleshooting After Starting ......................... 69
Troubleshooting Information............................. 70
Troubleshooting Chart................................... 71
Long-Term Storage ................................................ 75
Safety Precautions ............................................ 75
Introduction ........................................... 75
Prepare Engine for Long-Term Storage.................... 76
Draining the Cooling System............................. 76
Specifications ......................................... 79
Principal Engine Specifications ........................ 79
2YM15 Engine Specifications ............................ 79
3YM20 Engine Specifications ............................ 81
3YM30 Engine Specifications ............................ 83
Marine Gear and Sail Drive Specifications ........ ......85
System Diagrams ........................................ 87
Piping Diagrams......................................... 87
Wiring Diagrams................................................ 93
EPA Warranty USA Only .................................. 99
Yanmar Co., Ltd. Limited Emission Control
System Warranty - USA Only.............................. 99
Your Warranty Rights and Obligations: ........... ......100
Warranty Period:....................................... 100
Warranty Coverage: .................................... 101