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Yanmar 4JH-HT(B)E User Manual

Yanmar 4JH-HT(B)E
316 pages
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Yanmar 4JH-HT(B)E Specifications

General IconGeneral
Engine Model4JH-HT(B)E
Cylinders4
Cylinder ArrangementIn-line
Fuel TypeDiesel
Lubrication PumpTrochoid pump
Starting SystemElectric starter
Cooling SystemFresh water cooled with heat exchanger
Lubrication SystemForced lubrication
Direction of RotationCounterclockwise, viewed from flywheel side
Combustion SystemDirect injection

Summary

Chapter 1 General

Exterior Views

Provides visual identification of engine components and their locations.

Specifications

Lists technical data, performance metrics, and dimensions for engine models.

Chapter 2 Inspection and Servicing of Basic Engine Parts

Cylinder Block

Details inspection and servicing procedures for the cylinder block.

Cylinder Head

Outlines inspection, servicing, and assembly of the cylinder head.

Crankshaft and Main Bearing

Covers inspection and servicing of the crankshaft and main bearings.

Chapter 3 Fuel Injection Equipment

Fuel Supply System

Explains the engine's fuel supply system, including component functions.

Disassembly, Reassembly and Inspection of Governor

Details procedures for governor disassembly, reassembly, and inspection.

Disassembly, Reassembly and Inspection of Fuel Injection Pump

Outlines procedures for fuel injection pump disassembly, reassembly, and inspection.

Adjustment of Fuel Injection Pump and Governor

Covers adjusting the fuel injection pump and governor for optimal performance.

Fuel Injection Nozzle

Covers fuel injection nozzle specifications, disassembly, and inspection.

Troubleshooting

Provides troubleshooting steps for common fuel injection system issues.

Chapter 4 Intake and Exhaust System

Turbocharger

Explains turbocharger specifications, construction, function, and maintenance.

Chapter 5 Lubrication System

Lube Oil Pump

Details lube oil pump construction, specifications, and disassembly.

Chapter 6 Cooling Water System

Sea Water Pump

Details sea water pump construction, specifications, and disassembly.

Fresh Water Pump

Covers fresh water pump construction, specifications, and disassembly.

Chapter 7a Reduction and Reversing Gear

Chapter 7b Reduction and Reversing Gear

Construction

Details the construction of the KM4A marine gear (angle drive).

Inspection and Servicing

Covers inspection and servicing procedures for the KM4A marine gear.

Disassembly

Outlines the step-by-step disassembly process for the KM4A marine gear.

Reassembly

Covers the step-by-step reassembly process for the KM4A marine gear.

Chapter 8 Remote Control (Optional)

Remote Control Adjustment

Explains how to adjust the clutch and throttle controls for proper operation.

Chapter 9 Electrical System

Starter Motor

Covers starter motor specifications, construction, operation, and testing.

Chapter 10 Disassembly and Reassembly

Disassembly and Reassembly Precautions

Provides essential guidelines and precautions for disassembly and reassembly.

Disassembly and Reassembly

Details the step-by-step procedures for engine disassembly and reassembly.

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