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General| Engine Model | 4BY3-180 |
|---|---|
| Number of Cylinders | 4 |
| Fuel System | Direct injection |
| Engine Type | 4-Cycle |
| Rated Output | 180 HP |
| Aspiration | Turbocharged |
| Cooling System | Water-cooled |
| Lubrication System | Forced lubrication |
| Starting System | Electric |
Section to record engine model, serial number, purchase date, and dealer information.
General safety advice, and precautions before, during, and after operation.
Warnings about diesel fuel flammability, explosion risks, and ignition sources.
Hazards related to entanglement, piercing with fuel spray, burns, and sudden movement.
Safety concerning exhaust fumes, welding, electrical shock, and tool usage.
Hazards from flying objects, coolant contact, and extreme ambient temperatures.
Illustrates safety decals on the engine and their corresponding part numbers.
Overview of BY3-series engine features, design, and intended use in pleasure craft.
Guidelines for operating a new engine during its initial 50 hours for proper break-in.
Diagrams showing the left and right sides of the 4BY3 engine components.
Diagrams showing the top view of 4BY3 and left side of 6BY3 engine components.
Diagrams showing the right side of 6BY3 and top view of 6BY3 engine components.
Shows the location and examples of engine data and drive information nameplates.
Explains the purpose and operation of key engine parts like fuel filters and cooling systems.
Specifications, types (including biodiesel), and handling of diesel fuel.
Guidelines for selecting and using engine oil, including viscosity and acceptable brands.
Specifications for marine gear oil and power steering fluid.
Information on acceptable engine coolants and how to add coolant.
Step-by-step instructions for starting the engine, including low-temperature considerations.
Procedures for normal and emergency engine shutdown and post-operation checks.
Importance of maintenance, daily checks, logging, parts, tools, and fastener tightening.
Recommended torque specifications for bolts, nuts, and hose clamps.
Requirements for maintaining compliance with EPA emission standards.
Operating conditions and fluid specifications to meet EPA emission standards.
Procedures for general inspection and installation of exhaust sampling ports.
Introduces the summary of maintenance items and intervals for optimal engine performance.
Visual checks and specific item checks to perform daily before operation.
Maintenance tasks to be performed every 50 hours or monthly.
Maintenance tasks to be performed every 250 hours or yearly.
Maintenance tasks to be performed every 500 hours or every 2 years.
Maintenance tasks to be performed every 1000 hours or every 4 years.
Maintenance tasks to be performed every 2000 hours or every 8 years.
Checks to perform and common issues encountered just after the engine starts.
Essential information to provide to dealer/distributor when reporting engine problems.
A table listing trouble codes, their causes, and recommended actions for diagnosis.
Steps to protect the engine from corrosion and damage during extended storage.
Procedure for draining the seawater cooling system to prevent freezing damage.
Detailed technical specifications for the YANMAR BY3-series engines.
Outlines YANMAR's emission control system warranty coverage and owner's responsibilities.
Details owner's duties regarding maintenance, fuel usage, and initiating warranty claims.
Contact information for YANMAR America Corporation, Marine Engine Division.
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