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Summary of Contents for Yanmar JH4 Series
- Page 1 SERVICE MANUAL JH4 Series Service Manual 3JH4E 4JH4AE 4JH4-TE 4JH4-HTE P/N: 0BJH4-G00102 MARINE ENGINES...
- Page 2 TABLE OF JH4 Series Service Manual CONTENTS Page Introduction ..................1-1 Safety....................2-1 General Service Information .............. 3-1 Periodic Maintenance ................. 4-1 Engine ....................5-1 Fuel System ..................6-1 Cooling System ................... 7-1 Lubrication................... 8-1 Turbocharger ..................9-1 Starter Motor..................10-1 Alternator ...................
- Page 3 TABLE OF CONTENTS Service Standards................14-1 JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 4 JH4 Series Service Manual INTRODUCTION This manual gives specific instructions for the Along with standard tools, Yanmar recommends the proper repair of Yanmar JH4 series marine use of special tools necessary to perform repairs engines. correctly. Please follow the procedures carefully to ensure Yanmar products are continuously undergoing quality service.
- Page 5 Revision Control Table. Discard the older, obsolete information. Revision Control Table Revision Date New Page Numbers Initiating Remarks Revision Number Involved Dept. Jul 2007 Re-release add 4JH4AE Rev. 2 JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 6 Section 2 JH4 Series Service Manual SAFETY SAFETY STATEMENTS Yanmar is concerned for your safety and the Indicates a hazardous situation which, if not condition of your marine engine. Safety statements avoided, will result in death or serious injury. are one of the primary ways to call your attention to the potential hazards associated with Yanmar Marine engines.
- Page 7 NEVER use a shop rag to catch the fuel. • Safety signs and decals are additional reminders for safe operating and maintenance techniques. Wipe up all spills immediately. • See your authorized Yanmar Marine dealer or distributor for additional training. NEVER refuel with the engine running. Crush Hazard...
- Page 8 ALWAYS use a piece of wood or cardboard. Have parts cleaners, primers, sealants and sealant your authorized Yanmar Marine dealer or distributor removers. repair the damage. Undersized wiring systems can cause an electrical Flying Object Hazard fire.
- Page 9 • When welding is completed, reconnect the leads to the alternator and engine control unit prior to reconnecting the batteries. JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 10 Tool Hazard Always remove any tools or shop rags used during maintenance from the area before operation. JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 11 Make sure the engine is installed on a level surface. torque. Loose parts can cause equipment damage If a Yanmar Marine Engine is installed at an angle or cause it to operate improperly. that exceeds the specifications stated in the Yanmar Marine Installation manuals, engine oil may Only use replacement parts specified.
- Page 12 Replace if damaged or lost. 3JH4E Engine Figure 2-1 WARNING 196630-12980 015863-01X Figure 2-1 1 – Part No.: 128377-07350 2 – Part No.: 128377-07260 3 – Part No.: 196630-12980 JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 13 Location of Safety Labels SAFETY 4JH4AE Engine WARNING 015514-00X Figure 2-2 1 – Part No.: 128377-07350 3 – Part No.: 196630-12980 2 – Part No.: 128377-07260 4 – Part No.: 128377-07150 JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 14 Location of Safety Labels SAFETY 12/05 4JH4-TE Engine WARNING 128296-07300 008830-02X Figure 2-3 1 – Part No.: 128377-07350 3 – Part No.: 196630-12980 2 – Part No.: 128377-07260 4 – Part No.: 128296-07300 JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 15 Location of Safety Labels SAFETY 4JH4-HTE Engine WARNING 128296-07300 014387-00X Figure 2-4 1 – Part No.: 128377-07350 3 – Part No.: 128296-07300 2 – Part No.: 128377-07260 4 – Part No.: 196630-12980 JH4 Series Service Manual 2-10 © 2007 Yanmar Marine International...
- Page 16 Section 3 JH4 Series Service Manual GENERAL SERVICE INFORMATION Page Safety Precautions ................3-3 Engine Outline Drawings..............3-4 3JH4E Models ................3-4 4JH4AE Models................. 3-8 4JH4-TE Models..............3-14 4JH4-HTE Models ..............3-20 Engine Piping Diagrams..............3-25 3JH4E Models ................. 3-25 4JH4AE Models...............
- Page 17 Units of Volume ................ 3-58 Units of Mass................3-58 Units of Force ................3-58 Units of Torque................. 3-58 Units of Pressure..............3-58 Units of Power ................3-58 Units of Temperature..............3-58 JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 18 NEVER turn off the battery switch (if equipped) or short the battery cables during operation. Damage to the electrical system will result. JH4 Series Service Manual © 2007 Yanmar Marine International...
- Page 19 Download the full PDF manual instantly. Our customer service e-mail: aservicemanualpdf@yahoo.com...
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