Yanmar 4D98E User Manual

SERVICE MANUAL
REVISED: FEBRUARY 2009
Read and observe all warnings on this unit
before operating it.
DO NOT operate this equipment unless all
factory installed guards and shields are
properly secured in place.
WARNING
4D94(L)E / 4D98E DIESEL ENGINES
Federal Environmental Protection Agency (EPA) Emission Control Compliant
BX20 S/N 580001A~ 4D94(L)E EPA TIER 2 400/500/600PD-14
BX50 S/N 200001A - 215882A 4D94(L)E EPA TIER 2
400/500/550/600/650/700PD-16
BX50 S/N 215883A~ 4D98E EPA TIER 3
SM197T
4D94E-BE4
4D94(L)E
4D98E

Yanmar 4D98E Specifications

General

Model	4D98E
Manufacturer	Yanmar
Fuel System	Direct injection
Cooling System	Water-cooled
Aspiration	Naturally Aspirated
Lubrication System	Forced lubrication
Starting System	Electric Starter
Engine Type	Diesel
Bore x Stroke	98 mm
Rotation	Counterclockwise

Summary

General Engine Information

Engine Specifications

Detailed technical specifications for 4D92E, 4D94LE, and 4D98E diesel engines.

Fuel, Lubricating Oil, and Cooling Water Recommendations

Guidelines for using and changing fuel, lubricating oil, and cooling water.

4D92E Engine Performance Curve

Performance data (output, torque, fuel consumption) chart for the 4D92E engine.

4D94LE Engine Performance Curve

Performance data (output, torque, fuel consumption) chart for the 4D94LE engine.

4D98E Engine Performance Curve

Performance data (output, torque, fuel consumption) chart for the 4D98E engine.

Engine External Views

Illustrated diagrams showing external components of the 4D92E/94LE/98E engines.

Structural Description

Cross-sectional diagrams detailing the internal components and structure of the engines.

How to Read This Manual

Explanation of the manual's structure, content, and reading conventions.

Precautions for Service Work

Essential safety, preparation, disassembly, and reassembly precautions for service tasks.

Tightening Torques for Standard Bolts and Nuts

Table of recommended tightening torques for various standard bolts and nuts.