2008 Yamaha WR450FX Owner's Service Manual

Covers WR450FX models with detailed information on operation, inspection, basic maintenance, and tuning procedures. Ref: 5TJ-28199-15.

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Document Details

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Document Number / Seller:
24697 / Brian Bell
File Size:
13.96 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Motorbike
Last updated / verified
Oct 22, 2025

Models Covered & Key Technical Specifications

Yamaha WR450FX (5TJ-28199-15) - 2008

2008 Yamaha WR450FX Service Manual | Yamaha Motor Corporation, U.S.A. Service Manual Set.

  • System Specifications: 449 cm3 displaces the engine displacement capacity.
  • Core Engine Type: Liquid cooled 4-stroke, DOHC signifies the engine's fundamental Architecture.
  • Specific Transmission Gears: 5-speed constant mesh provides the standard gear ratio Configurations.
  • Critical Chassis Type: Semi double cradle establishes the frame type Standard.
  • Universal Electrical System: CDI ignition system determines the ignition source Benchmarks.
  • Technical Fuel Type: Premium unleaded gasoline only signifies the recommended fuel Parameters.

Professional Workshop Service Manual & Technical Specifications

Yamaha WR450FX (5TJ-28199-15) 2008 Owner's Service Manual: Yamaha Motor Corporation, U.S.A. Manual Listing

Model Details: WR450FX // Vehicle Type: Bike / Off-road Logic // Specifications: Single cylinder, 4-stroke, DOHC, 449 cm3 engine.

Table of Contents Overview

Assessment-Element Diagnostic-Logic Context
General Information Comprehensive machine overview, controls, and usage Systems
Specifications Detailed engine, chassis, and electrical data Standards
Regular Inspection and Adjustments Maintenance schedules and procedures Operations
Tuning Settings for performance optimization Adjustments
Engine Disassembly and assembly of engine components Procedures
Chassis Suspension, steering, and brake system details Mechanisms
Electrical Ignition, charging, and lighting system diagnostics Circuits

Coverage is segmented into detailed sections covering every aspect of your Yamaha WR450FX. This manual thoroughly documents procedures for engine disassembly, chassis adjustments, electrical system troubleshooting, and much more. Detailed torque specifications are included for critical fasteners to ensure proper thread engagement security and component longevity. Maintenance procedures are clearly outlined, including periodic inspections and replacements.

FAQ

What are the **specified** tools needed for engine maintenance? keyboard_arrow_down

113 specific tools are listed in the "Special Tools" section, ranging from dial gauges and torque wrenches to specialized pullers and testers for accurate servicing.

What are the **essential** electrical values for the ignition system? keyboard_arrow_down

The CDI unit requires 248–372 Ω resistance at 20 °C (68 °F) for the pickup coil (White–Red) and 4.6–6.8 kΩ for the secondary coil resistance.

Specify the **correct** brake fluid for the hydraulic system. keyboard_arrow_down

DOT #4 brake fluid is the recommended type for the hydraulic brake system to ensure proper performance and prevent damage.

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Reviews (3)

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The service manual is comprehensive and easy to follow. Customer support was prompt and helpful when I had questions. Overall, a fantastic experience!
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Rated 5 out of 5 stars
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New
This manual is a lifesaver for my maintenance needs. The download process was seamless, and the email with the link arrived quickly. Highly recommend!