## 2003 Yamaha WR250F Motorcycle

The 2003 Yamaha WR250F is a high-performance off-road motorcycle designed for motocross and enduro racing. It features a lightweight aluminum frame, a powerful 249cc liquid-cooled four-stroke engine, and a host of advanced suspension and braking components.

### Engine

The WR250F's engine is a compact and efficient four-stroke unit that produces ample power for both motocross and enduro riding. It features a single overhead camshaft (SOHC) design with four valves per cylinder, a high-compression ratio of 12.5:1, and a lightweight forged piston.

The engine's electronic fuel injection (EFI) system ensures precise fuel delivery and optimal performance in all riding conditions. The EFI system also features an automatic choke for easy starting and a high-altitude setting for improved performance at elevations above 3,000 feet.

### Chassis

The WR250F's aluminum frame is lightweight and strong, providing excellent handling and stability. The frame is designed to minimize weight while maintaining rigidity, and it features a removable subframe for easy maintenance.

The bike's suspension system features a 46mm Kayaba inverted fork with adjustable preload, compression, and rebound settings. The rear suspension is a Kayaba monoshock with adjustable preload and compression settings. The suspension system provides excellent damping and control, allowing the bike to handle rough terrain with ease.

### Braking

The WR250F's braking system features a single 250mm front disc brake and a 220mm rear disc brake. The front brake is equipped with a two-piston caliper, providing excellent stopping power and feel. The rear brake is equipped with a single-piston caliper, providing adequate stopping power for most riding conditions.

### Features

The 2003 Yamaha WR250F comes equipped with a number of features that enhance its performance and rider comfort. These features include:

* A digital instrument cluster with a speedometer, tachometer, odometer, and trip meter
* A comfortable seat with a removable cover for easy cleaning
* Handguards to protect the rider's hands from wind, debris, and branches
* A skid plate to protect the engine and frame from damage
* A kickstand for easy parking

The information in this Catalog has been compiled to provide the mechanic with an easy to read, handy reference that contains comprehensive explanations of all disassembly, assembly and identification, part number, description, codes, quantity needed and remarks of each part.
EXPLODED DIAGRAM, CHARTS ILLUSTRATIONS
Each section provides exploded diagrams before each disassembly section for ease in identifying correct part/secction disassembly and re-assembly procedures.