1998-2004 Honda Foreman TRX450 Service Manual

Wiring diagrams, specifications, and repair sequences for the Honda Foreman TRX450 series, including the TRX450S/FM and TRX450ES/FE models. Ref: C8049A

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Document Details

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Document Number / Seller:
29497 / Amy Perez
File Size:
53.00 MB
File Type:
PDF
Language:
English
Pages:
483
Printable:
Yes
Category:
ATV
Last updated / verified
Oct 2, 2025

Models Covered & Key Technical Specifications

Professional Service Manual: Honda Foreman TRX450, TRX450S/FM, TRX450ES/FE 1998-2004 - Comprehensive Service & Repair Guide Overhaul-Reference

Machine-Range & Product-Line Primer | Series Kit.

  • Certified Size Parameters: 1,961 mm est. establishes the maximum overall length Metric.
  • Designated Installation Footprint: For engine removal, 50.2 kg defines the dry weight Chassis.
  • Defined Coupling Torques: 110 N·m -- signifies the primary drive gear torque value Standards.
  • Key System Fill: The engine oil capacity requires 2.0 L for standard operation Parameters.
  • Primary Power Framework: Front tire size reaches AT 25 X 10-12 Metric.
  • Baseline Mass Specs: The total dry weight requires 260 kg for standard operation Topology.

Professional Workshop Service Manual & Technical Specifications

Professional Service Manual: Honda Foreman TRX450, TRX450S/FM, TRX450ES/FE 1998-2004 - Comprehensive Service & Repair Guide Overhaul-Reference

Machine-Range: 1998-2004 TRX450S/FM, TRX450ES/FE // Product-Line: ATV / Engine Logic // Engineering-Base: Service Manual.

Technical Specifications Overview

Integrated-Framework Value Framework
Overall Length 1,961 mm (77.2 in) Specifications
Overall Width 1,161 mm (45.7 in) Details
Dry Weight 260 kg (573 lbs) Components
Front Tread 912 mm (35.9 in) Geometry
Rear Tread 909 mm (35.6 in) Measurement
Fuel Tank Capacity 12.0 L (3.18 US gal, 2.64 Imp gal) Capacity

Service sections detail engine removal and installation procedures, transmission, and gearshift linkage. Specifics cover cylinder head, cylinder, and piston assembly. Troubleshooting guidance addresses common issues like engine performance and starting problems.

The frame section documents body panel locations and removal procedures for the front and rear carriers, fenders, and covers. Analysis of frame components and their assembly is included.

The maintenance chapter addresses the schedule for routine service, including fluid changes, spark plug inspection, and valve clearance adjustments. Important torque specifications are clearly listed.

Cooling system maintenance is addressed in the lubrication system section, detailing oil cooler and fan motor procedures. Specifications for oil capacity and recommended oil types are provided.

Testing requirements are specified for engine compression tests, ensuring optimal performance. Detailed procedures for cylinder head and piston inspection are also included.

Clearance measurements are addressed for various engine components, including valve guides and rocker arms, to ensure proper operation and longevity.

The manual also documents torque specifications for critical engine components to ensure proper rotational loosening prevention.

FAQ

What **necessary** electrical values are listed for the ignition system? keyboard_arrow_down

100 V minimum is specified for ignition pulse generator peak voltage, and 30° BTDC at 5,900 rpm for ignition "F" mark.

Determine the **recommended** calibration settings for the pilot screw. keyboard_arrow_down

2-5/8 turns out is the standard setting for the pilot screw initial opening, with high altitude adjustments also at 2-5/8 turns out.

What **calibrated** specifications are included for piston ring-to-piston groove clearance? keyboard_arrow_down

0.04 – 0.06 mm (0.0016 – 0.0024 in) is the standard specification for the top piston ring-to-piston groove clearance on pages 410+.

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Reviews (3)

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This manual is a lifesaver! The detailed instructions made it easy for me to handle maintenance myself. Highly recommend it for any DIY enthusiast!
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Rated 4 out of 5 stars
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I found this service manual incredibly detailed and easy to follow. The troubleshooting section really helped me fix a few issues I was having. Plus, the download process was smooth and quick!