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Yamaha WR 400F (P) - WR 426F (P) 2002
Overview
The Yamaha WR 400F (P) and WR 426F (P) are high-performance competition off-road motorcycles designed for serious motocross and enduro enthusiasts. These machines are known for their exceptional handling, powerful engines, and durable construction, making them ideal for tackling challenging terrain and demanding competitions.
Engine
At the heart of both the WR 400F (P) and WR 426F (P) lies a potent liquid-cooled, single-cylinder, four-stroke engine. The WR 400F (P) features a displacement of 398cc, while the WR 426F (P) boasts a larger 426cc displacement. Both engines are fuel-injected and utilize a five-valve cylinder head design to optimize airflow and combustion efficiency. This advanced engine design delivers ample power and torque throughout the rev range, providing riders with exceptional acceleration and smooth, responsive power delivery.
Chassis
The WR 400F (P) and WR 426F (P) are built upon a lightweight and rigid aluminum frame that offers a precise handling and a high level of stability. The frame is complemented by a robust swingarm, ensuring optimal power transfer and rear wheel traction. The suspension system is composed of fully adjustable 46mm KYB inverted front forks and a linkage-type rear shock absorber, providing exceptional damping characteristics and allowing riders to fine-tune the suspension setup to suit their individual preferences and riding conditions.
Brakes
Both the WR 400F (P) and WR 426F (P) are equipped with powerful and reliable braking systems. The front brake employs a single 250mm wave-type disc with a twin-piston caliper, delivering precise and responsive braking performance. The rear brake consists of a 245mm wave-type disc and a single-piston caliper, providing ample stopping power and control.
Handling
The Yamaha WR 400F (P) and WR 426F (P) are renowned for their exceptional handling and maneuverability. The lightweight chassis, balanced weight distribution, and fully adjustable suspension system work in unison to provide riders with a precise and agile ride. The machines' narrow profile and compact dimensions allow for effortless navigation through tight trails and obstacles, making them ideal for both technical and high-speed riding.
Other Features
In addition to their impressive performance and handling, the WR 400F (P) and WR 426F (P) come equipped with a host of notable features, including:
- Digital instrument cluster with speedometer, tachometer, odometer, and trip meter
- Lightweight aluminum wheels with Excel rims
- Durable skid plate to protect the engine and frame from damage
- Rugged handguards for added protection and comfort
- Wide footpegs for improved grip and control
Conclusion
The Yamaha WR 400F (P) and WR 426F (P) 2002 are formidable off-road motorcycles that offer an exhilarating riding experience. With their powerful engines, lightweight and rigid chassis, advanced suspension, and reliable brakes, these machines are designed to conquer challenging terrain and dominate in motocross and enduro competitions.
This manual is a great guide to help you carry out simple or more advanced maintenance and repair work efficiently and correctly. You can get more insight in to the various parts of your bike, so even if you arent too technically gifted and are just curious, this is a great service repair manual to have in your library.
Contents:
- General Information
- Specifications
- Regular Inspection & Adjustments
- Tuning
- Engine
- Chassis
- Electrical
- Tuning
Languange :
- English
- French
- German
- Spanish
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