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Provides tune-up specifications for various Yanmar engine models, including idle and full throttle RPM.
Lists approximate engine oil capacities for different Yanmar engine models in quarts and liters.
Details engine models, displacement, horsepower, transmission, and gearbox ratios for Yanmar marine engines.
Outlines essential safety rules for servicing the machine to prevent injury and equipment damage.
Offers practical advice for performing service procedures, handling parts, and ensuring proper assembly.
Lists essential hand tools required for repairs and emphasizes the importance of quality tools for durability.
Lists and describes essential precision tools required for accurate measurements during service.
Explains the components and operation of the typical starter circuit for diagnosing issues.
Introduces the fuel system and its importance for engine operation, emphasizing clean fuel.
Introduces the cooling system and its role in engine temperature regulation, covering common problems.
Discusses how engine noises can indicate internal problems and provides methods for identification.
Lists essential checks to perform before starting the engine each day for safety and readiness.
Provides intervals and procedures for changing engine oil and filters to maintain lubrication.
Outlines the procedure for purging air from the fuel system to ensure proper operation and prevent misfire.
Stresses the importance of inspecting and properly tensioning drive belts for safe and reliable component operation.
Provides procedures for preparing the boat engine for storage to prevent damage from freezing or corrosion.
Provides steps for preparing the boat and engine for use after storage, including inspections and checks.
Explains the basic principles of diesel engine operation, focusing on compression ignition and fuel injection.
Emphasizes critical safety precautions when removing the engine due to its weight and potential hazards.
Introduces the cylinder head as a major engine component and outlines its removal procedure for service.
Guides on measuring piston diameter and cylinder bore for wear and out-of-roundness to ensure proper fit.
Emphasizes critical safety precautions when removing the engine due to its weight and potential hazards.
Provides the critical sequence and torque values for tightening cylinder head bolts for proper assembly.
Details the procedure for removing the piston and connecting rod assembly from the engine cylinder.
Explains the basic principles of diesel engine operation, focusing on compression ignition and fuel injection.
Explains the importance of correct fuel injection timing for optimal combustion and performance.
Introduces the governor system and its role in regulating engine speed regardless of load.
Explains the operation of the standard seawater cooling system, including its components and function.
Introduces closed cooling systems, their components, and maintenance needs for corrosion protection.
Explains the thermostat's role in controlling coolant circulation and its testing procedures.
Discusses battery types, recommendations, and critical safety precautions for handling and maintenance.
Describes the charging system components and preliminary testing procedures for diagnosis.
Covers the components and service procedures for the starter motor, solenoid, and related switches.
Explains the basic design and operation of the KM series transmissions, including gear engagement.
Details the procedure for adjusting bearing preload using shims for proper shaft rotation.
Explains the function of the drive disc in transmitting power and its inspection criteria.
Explains the basic design and operation of the KBW series transmissions, including gear engagement.
Outlines general procedures for removing and installing the transmission from the engine.
Explains the function of the drive disc in transmitting power and its inspection criteria.
Provides electrical wiring diagrams for early models with a large instrument panel.
Shows wiring diagrams for late models equipped with a large instrument panel.
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