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General| Model Series | JH Series |
|---|---|
| Manufacturer | Yanmar |
| Engine Type | Diesel |
| Aspiration | Naturally aspirated or turbocharged |
| Fuel System | Direct injection |
| Cooling System | Liquid-cooled |
Record essential engine details for service and documentation needs.
General safety guidelines and warnings for engine operation, maintenance, and installation.
Illustrates the placement of warning and caution labels on the engine models.
Details the characteristics and intended applications of the YANMAR JH series engines.
Provides instructions for the initial 50-hour break-in period to ensure proper engine performance.
Identifies and illustrates key components of the 3JH40, 4JH45/57, and 4JH80/110 engines.
Shows the location and content of engine and marine gear nameplates for identification.
Explains the function of essential engine components such as filters, pumps, and coolers.
Overview of the high-pressure common rail system and its safety warnings.
Lists and describes the primary components of the engine's electronic control system.
Describes the instruments and functions of the B25 and C35 type instrument panels.
Explains the multi-function display, runtime data, and alarm indications.
Describes how to access and interpret diagnostic codes displayed on the screen.
Details how alarm indicators and buzzers function during abnormal engine activity.
Explains the function to prevent operation from other stations while steering.
Describes the ID check function for anti-theft purposes.
Details how to set and change the Owner ID for system access and anti-theft.
Explains the multi-function display, runtime data, and alarm indications for VC20.
Describes how to access and interpret diagnostic codes displayed on the screen.
Details how alarm indicators and buzzers function during abnormal engine activity.
Describes the process of registering and using the YANMAR E-key for authentication.
Explains how to disable the YANMAR E-key function and delete registered keys.
Details the procedure for powering on the system using the YANMAR E-key.
Lists shortcut operations for the display's buttons for quick access to functions.
Details diesel fuel specifications, including US and EU standards, and biodiesel precautions.
Specifies engine oil requirements, service categories, viscosity, and replacement intervals.
Lists specifications and requirements for marine gear and sail drive oils.
Provides procedures for checking and adding marine gear oil and sail drive oil.
Details engine coolant specifications and safe handling procedures.
Step-by-step guide for checking and adding engine coolant to the system.
Reminds users to review the general safety section before performing operations.
Details the procedure for starting the engine using the B25 and C35 instrument panels.
Provides troubleshooting steps for when the engine does not start or starts with difficulty.
Lists checks to perform after the engine has started to ensure normal operation.
Explains how to control engine speed using the throttle handle for acceleration and deceleration.
Instructions on how to engage trolling mode using the trolling lever and adjust speed.
Highlights important operational precautions and potential issues to monitor.
Details how to set and use the engine speed limit mode for controlling maximum RPM.
Provides procedures for safely shutting down the engine.
Specific shutdown procedure for engines with folding or feathering propellers.
Covers emergency shutdown procedures and related warnings.
Instructions for operating the engine using the backup control panel in emergencies.
Overview of the VC20 vessel control system functions.
Introduces the section on proper care and maintenance of the engine.
Reminds users to review safety information before performing maintenance procedures.
Explains EPA regulations and requirements for maintaining engine performance and compliance.
Outlines environmental conditions to observe for optimal engine performance and maintenance.
Details inspection and maintenance procedures for emission-related parts and general service.
Provides instructions for installing an exhaust sampling port for emissions testing.
Summarizes maintenance items and their required intervals based on engine hours or time.
Provides step-by-step instructions for performing various maintenance tasks.
Guides on performing essential daily checks to ensure the engine is in good operating condition.
Lists visual checks to perform, including leaks, damaged parts, and fasteners.
Instructs to check and maintain proper levels of diesel fuel, engine oil, and coolant.
Guides on checking and adding marine gear oil and sail drive oil.
Details how to check battery electrolyte levels for serviceable batteries.
Guides on checking the tension and condition of the alternator V-ribbed belt.
Instructions for checking the smooth operation of the remote control handle and its cables.
Verifies that alarm indicators function correctly when the engine is started.
Advises on keeping reserve fluids onboard for emergencies.
Lists maintenance tasks to be performed after the first 50 hours of engine operation.
Provides steps for changing engine oil and replacing the oil filter element.
Guides on changing marine gear oil and replacing the gear oil filter.
Guides on inspecting the seawater pump impeller for damage and replacing it if necessary.
Lists maintenance tasks to be performed every 50 hours or monthly.
Provides steps for draining water and sediment from the fuel filter/water separator.
Lists maintenance tasks to be performed every 250 hours or 1 year.
Provides steps for replacing the fuel filter element and bleeding the fuel system.
States that the seawater impeller must be replaced every 1000 hours, even if undamaged.
Provides instructions and precautions for changing engine coolant annually.
Lists maintenance tasks to be performed every 500 hours or 2 years.
Lists maintenance tasks to be performed every 1000 hours or 4 years.
Reminds users to review safety information before performing troubleshooting procedures.
Lists checks to perform immediately after starting the engine to identify potential issues.
Provides guidance on what information to supply to a dealer for troubleshooting assistance.
A chart listing symptoms, probable causes, and recommended measures for engine problems.
Detailed chart explaining failsafe diagnosis codes and actions for ECU errors.
Provides a checklist for preparing the engine for extended periods of inactivity to prevent damage.
Essential procedure for draining the seawater cooling system before storage, especially in cold climates.
Step-by-step guide for preparing the engine after long-term storage.
Presents key technical specifications for the YANMAR JH series engines.
Explains the notation used in piping diagrams and shows diagrams for various engine models.
Details the limited emission control system warranty for YANMAR marine CI engines in the USA.
Outlines owner responsibilities, YANMAR's warranty coverage, warranted parts, and exclusions.
Provides contact details for warranty inquiries, dealer locations, and support.
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