2003-2007 Yamaha WR250FR Owner's Service Manual

Carburetor tuning, suspension adjustments, engine service procedures, and brake system bleeding for WR250FR and WR250F models. Complete Factory Documentation with exploded diagrams.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Yamaha Models Covered & Key Technical Specifications

Models: Yamaha WR250FR, Yamaha WR250F, Yamaha WR250F(R)
Sub-models / Variants: USA, Europe, Canada, Australia, New Zealand, ZA (South Africa)
Build Years: 2003–2007
Serial Numbers: 5UM1 (USA), 5UM2 (Europe), 5UM4 (Canada, Australia, New Zealand, South Africa)
Technical Data:

  • Engine type: Liquid cooled 4-stroke, DOHC, single cylinder
  • Displacement: 249 cm³ (8.76 Imp oz)
  • Bore × stroke: 77.0 mm × 53.6 mm (3.03 in × 2.11 in)
  • Compression ratio: 12.5:1
  • Transmission: Constant mesh, 5-speed, left foot operation
  • Fuel tank capacity: 10 L (2.64 US gallons)
  • Engine oil capacity: 1.4 L (1.48 US quarts) total amount
  • Coolant capacity: 1.3 L (1.37 US quarts)
  • Tire size (front): 80/100-21 51M or 90/90-21 54R
  • Tire size (rear): 100/100-18 59M or 130/90-18 69R
  • Battery voltage/capacity: 12 V/4 AH
Technical Specifications
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Document Number / Seller:
25294 / William Lee
File Size:
17.95 MB
File Type:
PDF
Language:
English
Pages:
343
Printable:
Yes
Category:
Motorbike
Last updated / verified
Jan 25, 2026

Yamaha Manual Features & Content Preview

2003–2007 Yamaha WR250FR Service Documentation

  • Covers 2003–2007 Yamaha WR250FR, WR250F, and WR250F(R) competition-use enduro bikes with the 249 cm³ liquid-cooled 4-stroke engine
  • Official Yamaha publication P/N LIT-11626-16-48, 1st edition November 2002
  • Contains 51 detailed exploded-view mechanical diagrams and 15 cable-routing schematics for chassis and electrical sub-assemblies
  • Accessible from your device as soon as the order is placed
  • Indexed PDF search covers every chapter and appendix
  • This 2003 first edition documents the initial 5UM1, 5UM2, and 5UM4 engine series configurations used for the WR250FR launch and subsequent model years

Technical Scope and Maintenance Structure

This 343-page Yamaha WR250FR service manual contains technical details for engine, chassis, and electrical maintenance. The document details regular inspection routines, including valve clearance checks and air filter cleaning, alongside standard operating parameters for the competition-focused WR engine architecture. Chapters cover engine disassembly, radiator cooling system management, and specific chassis adjustment tasks, such as front fork maintenance and brake system air-bleeding procedures.

Specification Highlights

Maintenance specifications include comprehensive torque tables for engine mounting, balancer shafts, and swingarm pivot bolts. The manual provides reference data for carburetion, including main jet sizes for different world-market models like the 5UM1 USA variant. Coolant system capacity is documented at 1.3 liters across all circuits. The valve clearance for intake valves is specified at 0.10–0.15 mm. Engine oil capacity is 1.4 liters including total system volume. An official 343-page Yamaha OEM workshop manual covering the 2003–2007 Yamaha WR250FR, documenting engine, chassis, electrical, and fuel-delivery specifications for the 5UM-series build.

Manual FAQ, Purchase & Download Details

Can I find information on fluid capacities and total oil volume within this service manual? keyboard_arrow_down

Manual includes technical specifications that list fluid capacities, such as the engine oil requirement and fuel tank volume, to assist with maintenance and fluid service.

Which chapters contain the detailed specification tables, tightening references, and maintenance limit values? keyboard_arrow_down

Chapter 2 covers general and maintenance specifications, including tightening torque categories and service limits. These tables provide the necessary technical reference data for the machine systems.

What system coverage does this 343-page manual provide for the WR250FR motorbike? keyboard_arrow_down

Document contains seven comprehensive chapters that cover the engine, chassis, electrical system, and tuning parameters. Detailed sections are included for components such as the carburetor, transmission, front fork, and ignition system.

Does this manual show wiring diagrams and electrical component references for the electrical system? keyboard_arrow_down

Chapter 6 includes wiring diagrams and information on the charging system, ignition system, and other electrical components.

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