1998-2004 Honda Fourtrax Foreman 450 TRX450 TRX450ES/FE, TRX450S/FM Repair & Service Manual
Honda Models Covered & Key Technical Specifications
Models: TRX450S, TRX450FM, TRX450ES, TRX450FE
Sub-models / Variants: Fourtrax Foreman 450, 2WD, 4WD, S (manual shift), ES (Electric Shift), FM (Foreman Manual), FE (Foreman Electric)
Model Years: 1998–2004
Technical Data:
- Engine displacement: 432.6 cc (26.40 cu-in)
- Engine type: Single cylinder, longitudinally installed, air-cooled, overhead valve
- Transmission type: Constant mesh, 5-speed with reverse, automatic clutch
- Bore and stroke: 90.0 x 68.0 mm
- Compression ratio: 8.5:1
- Final drive oil capacity (at draining): 100 cm³
Honda Manual Features & Content Preview
- Covers 1998–2004 Honda Fourtrax Foreman 450 TRX450S/FM and TRX450ES/FE variants, documenting engine, chassis, electrical, and maintenance specifications for the 432.6 cc platform.
- Original OEM publication C8049A from Honda Motor Co., Ltd.
- Outlines factory-approved procedures for routine maintenance and component repair, featuring 26 comprehensive sections including engine disassembly, drivetrain linkage, suspension settings, and wiring schematics.
- Serves as the base factory reference for all build configurations, detailing both early manual shift (S/FM) models and the later Electric Shift Program (FE/FM) versions equipped with Selectable 4WD.
Manual Structural Overview
This factory manual provides an exhaustive breakdown of the Honda Fourtrax Foreman 450 systems. The documentation spans 26 major sections. It begins with general vehicle information, frame and exhaust removal, and detailed maintenance schedules. Subsequent chapters cover the lubrication system, fuel delivery, and engine internal components like the cylinder head, piston, clutch, and gearshift linkage. Mechanics will also find extensive coverage of the complete powertrain. The chassis section focuses on wheel and suspension geometry, braking systems, and front or rear driving mechanisms. Electrical documentation addresses battery maintenance, ignition timing, electric starting, light assemblies, and the proprietary Electric Shift Program (ESP) exclusive to the ES/FE models.
Technical Specification Preview
This technical reference delivers crucial data for the 432.6 cc engine platform. Intake valve clearance is specified at 0.15 mm in the cylinder head tables. Engine oil capacity requires exactly 2.0 liters during a standard drain procedure. For models produced after 2001, the front differential oil capacity is specified at 241 cm³. Torque values for the oil drain bolt sit at 25 N·m. Navigating these systems requires strict adherence to the provided torque charts and component exploded views. Always observe standard shop safety practices and verify proper vehicle stabilization before initiating any diagnostic or repair work.
Document Reference: Honda Motor Co., Ltd. Service Publication Office, 1998-2004
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