This Operation Manual describes the operation, maintenance, inspection and handling precautions of the Yanmar 2YM15, 3YM20, 3YM30 Marine Diesel Engine.

Models Covered:
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Yanmar Marine Diesel Engine 2YM15
Yanmar Marine Diesel Engine 3YM20
Yanmar Marine Diesel Engine 3YM30

Table of Contents:
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INTRODUCTION
1. FOR YOUR SAFETY
1.1 Warning Symbols
1.2 Safety Precautions
1.3 Warning Labels
2. PRODUCT EXPLANATION
2.1 Use, Propulsion System, Etc.
2.2 Engine Specifications
2.3 Names of Parts
2.4 Major Service of Parts
2.5 Control Equipment
2.5.1 Instrument Panel
2.5.2 Controls and equipment
2.5.3 Meters
2.5.4 Alarm equipment (lamps and buzzer)
2.5.5 Normal action of alarm devices
2.5.6 Single Lever Remote Control Handle
2.5.7 Shut-down Equipment
3. OPERATION
3.1 Fuel Oil, Lubricating Oil, and Cooling Water
3.1.1 Fuel Oil
3.1.2 Lubricating Oil
3.1.3 Cooling fresh water
3.1.4 Handling of Coolant
3.2 Before Initial Operation
3.2.1 Supply Fuel Oil
3.2.2 Supply Engine Lubricating Oil
3.2.3 Supply Marine Gear Lubricating Oil
3.2.4 Supply Cooling Water
3.2.5 Cranking
3.2.6 Check and Re-supply Lubricating Oil and Cooling Water
3.3 Operating your engine
3.3.1 Daily Start Up Inspection
3.3.2 How to Start the Engine
3.3.3 Operation
3.3.4 Cautions During Operation
3.3.5 Engine shut-down
3.4 Long Term Storage
4. MAINTENANCE AND INSPECTION
4.1 General Inspection Rules
4.2 List of Periodic Inspection Items
4.3 Periodic Inspection Items
4.3.1 Inspection on Initial 50 Hrs. of Operation (or after 1 Month)
4.3.2 Inspection Every 50 Hrs. (or Monthly)
4.3.3 Inspection Every 100 Hrs (or six months).
4.3.4 Inspection Every 150 Hrs (or one year).
4.3.5 Inspection Every 250 Hrs (or one year).
4.3.6 Inspection Every 1000 Hrs (or 4 years).
4.3.7 Annually
4.4 EPA Requirements
4.4.1 EPA Certification Plate
4.4.2 Conditions to Insure Compliance with Emission Standards
4.4.3 Inspection and Maintenance
5. TROUBLE AND TROUBLESHOOTING
6. PIPING DIAGRAMS
7. WIRING DIAGRAMS

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** Model Specification: YANMAR 2YM15, 3YM20, 3YM30 MARINE DIESEL ENGINE
** Language: English
** File Format: PDF
** Requirements: Adobe PDF Reader
** ZOOM IN/OUT: YES
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** Specifications: FULLY PRINTABLE & BOOKMARKED
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