Need help?Do you have a question about the Yanmar 4JH80 and is the answer not in the manual?
General| Engine Model | 4JH80 |
|---|---|
| Number of Cylinders | 4 |
| Aspiration | Turbocharged |
| Fuel System | Direct injection |
| Engine Type | 4-stroke, water-cooled, diesel engine |
| Rated Output | 59 kW (80 hp) at 3300 rpm |
| Bore x Stroke | 84 mm x 90 mm |
| Cooling System | Heat exchanger |
| Lubrication System | Forced lubrication |
| Starting System | Electric |
Record engine details for service, parts, or documentation.
Explains the meaning of safety alert symbols and hazard levels (DANGER, WARNING, CAUTION, NOTICE).
General advice covering operation, maintenance, and specific hazards like fire, explosion, and severe injury.
Shows the location of safety decals on the engine.
Overview of engine series features and intended use.
Procedures for breaking in a new engine for optimal performance.
Identifies components of the 3JH40 engine.
Explains the function of key engine components.
Overview of the high-pressure common rail system and ECU.
Operation of the single-lever control handle.
Overview of the electronic control system for remote operation.
Overview of the second generation electronic control system.
Details diesel fuel specifications and biodiesel precautions.
Safety precautions for handling and filling fuel tanks.
Step-by-step instructions for filling the fuel tank safely.
Procedures for bleeding air from the fuel system.
Engine oil specifications, service categories, and viscosity.
Steps to check the engine oil level using the dipstick.
Specifications for marine gear and sail drive oils.
Engine coolant specifications and types.
Shows locations for draining and filling coolant for 3JH40.
Warning about jump-starting and sparks.
Step-by-step guide to start the engine via the instrument panel.
Troubleshooting steps when the engine does not start.
Guidance for starting the engine in cold conditions.
Safety precautions and procedure for engaging the marine gear.
Procedures for safely shutting down the engine.
Use and function of the auxiliary stop switch.
Starting the engine using the VC10 control system.
Registering and using the YANMAR E-key for authentication.
Operation of throttle and shift controls.
How to use the electric emergency stop switch.
Warning about hazards during engine transport and lifting.
Correct torque values for tightening engine fasteners.
Summary of maintenance items and intervals.
Items to check before starting the engine daily.
Maintenance tasks to perform after the first 50 hours.
Procedures for oil and filter replacement.
Inspecting and replacing the seawater pump impeller.
Procedure for changing engine coolant.
Step-by-step guide to replace the fuel filter element.
Checks to perform after engine start to identify issues.
Check for adequate seawater discharge.
Identifying engine overloading by smoke color.
Troubleshooting abnormal engine vibrations or noise.
Lists symptoms, probable causes, and measures for engine issues.
Troubleshooting steps for engine starting problems.
Chart detailing failsafe diagnosis codes and actions.
Procedures to prepare the engine for extended storage.
Instructions for draining the seawater cooling system.
Steps to recommission the engine after storage.
General specifications for the Yanmar JH series engines.
Detailed specifications for the 3JH40 engine.
Detailed specifications for the 4JH45 engine.
Detailed specifications for the 4JH57 engine.
Detailed specifications for the 4JH80 engine.
Detailed specifications for the 4JH110 engine.
Notations and descriptions for piping diagrams.
Piping diagram for 3JH40 with specific marine gears.
Piping diagram for 4JH45/4JH57 with specific marine gears.
Piping diagram for 4JH80/4JH110 with KM4A2 marine gear.
Statement detailing emission control system warranty terms.
Information on owner's rights and responsibilities under the warranty.
List of engine components covered under the emission control warranty.
List of failures and conditions not covered by the warranty.
Owner's responsibilities for maintenance and warranty claims.
To Next Page
