Yanmar Marine Diesel Engine 1GM10(C), 2GM20(F)(C), 3GM30(F)(C), 3HM35(F)(C) Service Manual PDF

This service manual has been complied for engineers engaged in sales, service, inspection and maintenance.
Technical manual contains service and repair information, specific installation instructions, technical specifications for Yanmar Marine Diesel Engines 1GM10(C), 2GM20(F)(C), 3GM30(F)(C), 3HM35(F)(C).
This guide is a professional assistant for operators, professionals working for the maintenance and repair.
Service manual comes in PDF and includes 460 pages, which are printable. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

Models:
1GM10(C),
2GM20(F)(C),
3GM30(F)(C),
3HM35(F)(C).

CONTENTS:

• A. Engine Model Name
• B. Engine Model Name Plate and Clutch Model Name Plate
• C. Cylinder Number
• CHAPTER 1 GENERAL
  • 1. Specifications
  • 2. Principal Construction
  • 3. Performance Curves
  • 4. Features
  • 5. Engine Cross-Sections
  • 6. Dimensions
  • 7. Piping Diagrams
• CHAPTER 2 BASIC ENGINE
  • 1. Cylinder Block
  • 2. Cylinder Head
  • 3. Piston
  • 4. Connecting Rod
  • 5. Crankshaft
  • 6. Flywheel and Housing
  • 7. Camshaft
  • 8. Timing Gear
• CHAPTER 3 FUEL SYSTEM
  • 1. Fuel Injection System
  • 2. Injection Pump
  • 3. Injection Nozzle
  • 4. Fuel Filter
  • 5. Fuel Feed Pump
  • 6. Fuel Tank (Option)
• CHAPTER 4 GOVERNOR
  • 1. Governor
  • 2. Injection Limiter
  • 3. No-Load Maximum Speed Limiter
  • 4. Idling Adjuster
  • 5. Engine Stop Lever
• CHAPTER 5 INTAKE AND EXHAUST SYSTEM
  • 1. Intake and Exhaust System
  • 2. Intake Silencer
  • 3. Exhaust System
  • 4. Breather
• CHAPTER 6 LUBRICATION SYSTEM
  • 1. Lubrication System
  • 2. Oil Pump
  • 3. Oil Filter
  • 4. Oil Pressure Regulator Valve
  • 5. Oil Pressure Measurement
• CHAPTER 7 DIRECT SEA-WATER COOLING SYSTEM
  • 1. Cooling System
  • 2. Water Pump
  • 3. Thermostat
  • 4. Anticorrosion Zink
  • 5. Kingston Cock (Option)
  • 6. Bilge Pump and Bilge Strainer (Option)
• CHAPTER 8 FRESH WATER COOLING SYSTEM
  • 1. Cooling System
  • 2. Sea Water Pump
  • 3. Fresh Water Pump
  • 4. Heat Exchanger
  • 5. Filler Cap and Subtank
  • 6. Thermostat
  • 7. Cooling Water Temperature Switch
  • 8. Precautions
• CHAPTER 9 MODIFYING THE COOLING SYSTEM
  • 1. General
  • 2. Disassembly of Sea Water-Cooled Engine
  • 3. Assembling modified parts to the Fresh Water-Cooled Engine
  • 4. Cautions When the Engine is Installed Inboard
• CHAPTER 10 REDUCTION AND REVERSING GEAR
  • (A) For Engine Models 1GM10, 2GM20(F) and 3GM30(F)
  • (B) For Model 3GM35(F)
  • (C) Marine Gear Models KM2P, KM3P and KM3V for Engine Models 1GM10, 2GM20(F) and 3GM30(F)
  • (D) V-drive Gear, Model KM3V
• CHAPTER 11 REMOTE CONTROL SYSTEM
  • 1. Construction
  • 2. Clutch and Speed Regulator Remote Control
  • 3. Engine Stop Remote Control
• CHAPTER 12 ELECTRICAL SYSTEM
  • 1. Electrical System
  • 2. Battery
  • 3. Starter Motor
  • 4. Alternator Standard, 12V/55A
  • 4A. Alternator Option, 12V/35A
  • 5. Instrument Panel
  • 6. Tachometer
• CHAPTER 13 OPERATING INSTRUCTIONS
  • 1. Fuel Oil and Lubricating Oil
  • 2. Engine Operating Instructions
  • 3. Troubleshooting and Repair
• CHAPTER 14 DISASSEMBLY AND REASSEMBLY (Direct Sea-Water Cooling Engine)
  • 1. Disassembly and Reassembly Precautions
  • 2. Disassembly and Reassembly Tools
  • 3. Others
  • 4. Disassembly
  • 5. Reassembly
• CHAPTER 15 DISASSEMBLY AND REASSEMBLY (Fresh Water Cooling Engine)
  • 1. Disassembly of Fresh Water-Cooled Engine
  • 2. Reassembly of Fresh Water-Cooled Engine
  • 3. Tightening Torque
  • 4. Packing Supplement and Adhesive Application Point