What to do if my Yanmar 3JH4E Engine suddenly stops?
If your Yanmar Engine suddenly stops, the possible causes and solutions include: adding fuel oil and priming (I-1) if the fuel oil supply is cut off; bleeding air (I-2); removing water from the drain and fuel oil system and priming (I-3); checking and making necessary repairs (I-4); cleaning (I-5); replacing (I-6); checking and making necessary repairs (I-7).
What to do if Yanmar Engine starter turns but the engine does not start?
If the starter turns but the Yanmar Engine doesn't start, it could be due to several reasons. You might be out of fuel, so add fuel and bleed the fuel system. Another possibility is a clogged fuel filter, in which case you should replace the filter element. Using improper fuel can also cause this issue, so replace it with the recommended fuel.
Why Yanmar Engine battery low charge indicator does not go out during operation?
If the battery low charge indicator remains on during Yanmar Engine operation, it could be due to a loose or broken V-belt, which requires replacement or tension adjustment. Alternatively, the battery itself might be defective, so check the fluid level, specific gravity, and consider replacing it.
What to do to ensure sufficient fuel in Yanmar 3JH4E?
To prevent running out of fuel for your Yanmar Engine, refill the fuel tank in advance. If the tank runs out of fuel, bleed the fuel system.
What to do if Yanmar 3JH4E starter does not turn or turns slowly?
If the Yanmar Engine starter doesn't turn or turns slowly but the engine can be turned manually, ensure the clutch is in NEUTRAL before starting. Check the battery fluid level and recharge or replace the battery if necessary. Also, remove any corrosion from the cable terminals and tighten the battery cables.
What to do if Yanmar 3JH4E has abnormal vibrations or noise?
Engine and hull resonance may suddenly increase at certain engine speed ranges, causing heavy vibrations in Yanmar Engine. Avoid operation in this speed range. If any abnormal sounds are heard, stop the engine and inspect for cause.
What to do if alarm sounds during Yanmar 3JH4E operation?
If the alarm sounds during Yanmar Engine operation, immediately lower the engine speed, check the warning lamps and stop the engine for repairs.
What to do if not enough water is discharged from Yanmar Engine?
If the water discharge from the Yanmar Engine's seawater outlet pipe is low, stop the engine immediately. Identify the cause and repair.
General| Number of Cylinders | 3 |
|---|---|
| Aspiration | Naturally aspirated |
| Fuel System | Direct injection |
| Engine Type | Vertical, Water Cooled, 4-Stroke Diesel Engine |
| Displacement | 1.642 L |
| Bore x Stroke | 88 mm x 90 mm |
| Rated Output | 39.0 HP (29.1 kW) at 3000 rpm |
| Cooling System | Freshwater cooling with heat exchanger |
| Starting System | Electric starting |
| Lubrication System | Forced lubricating by trochoid pump |
Essential information for contacting Yanmar for service or parts.
General safety guidelines and common sense practices for safe operation and maintenance.
Visual guide to the placement of safety decals on Yanmar JH4 series engines.
Details the characteristics and intended uses of the Yanmar JH4 series engines.
Guidelines for the initial 50 hours of engine operation for optimal performance and longevity.
Identifies and illustrates major engine components for different JH4 models.
Explains the instrument panel and remote control handle for engine operation.
Details recommended diesel fuel specifications for optimal engine performance and compliance.
Specifies recommended engine oil types, viscosity, and handling for Yanmar engines.
Outlines the recommended oils for marine gear and sail drive units.
Provides details on the recommended antifreeze/coolant for the engine's cooling system.
Procedures for starting the engine, especially after periods of non-use.
Essential daily checks to ensure the engine is in good operating condition before use.
Step-by-step instructions for safely starting the Yanmar engine.
Checks and procedures to perform immediately after the engine starts.
How to use the remote control handle for acceleration, deceleration, and shifting.
Proper procedures for safely shutting down the Yanmar engine.
Essential safety warnings and precautions related to engine maintenance.
Requirements for maintaining engine performance and compliance with EPA emission standards.
A summary of maintenance items and intervals for keeping the engine in good condition.
Initial maintenance procedures to be performed after the first 50 hours of engine use.
Regular maintenance tasks to be performed every 50 hours or monthly.
Maintenance tasks to be performed every 250 hours or annually.
Maintenance tasks to be performed every 500 hours or every two years.
Major maintenance tasks to be performed every 1000 hours or every four years.
Checks to perform immediately after starting the engine if issues arise.
A guide to identify probable causes and measures for engine symptoms.
Information to provide to a dealer or distributor for effective troubleshooting.
Procedures to protect the engine during extended periods of non-use.
Steps to properly drain the seawater cooling system to prevent damage.
Detailed technical specifications for the Yanmar JH4 series engines.
Specific technical data for the 3JH4E model.
Specific technical data for the 4JH4AE model.
Specific technical data for the 4JH4-TE model.
Specific technical data for the 4JH4-HTE model.
Notations and diagrams illustrating the engine's piping systems.
Diagrams illustrating the system components for 3JH4E engines.
Diagrams illustrating the system components for 4JH4AE engines.
Diagrams illustrating the system components for 4JH4-TE/HTE engines.
Wiring diagram for the 3JH4E with a B-Type instrument panel.
Wiring diagram for the 4JH4AE with a B-Type instrument panel.
Wiring diagram for 4JH4-TE/HTE with C x B Type Panel.
Details Yanmar's limited emission control system warranty for the US market.
Outlines the rights and responsibilities of the engine owner regarding the warranty.
Warranty details for non-road compression-ignition engines regarding emission systems.
Defines the warranty duration based on engine power rating and usage hours.
Details the owner's duties for maintaining warranty coverage.
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