Yamaha WR450FS 2004 Owner's Manual

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Year 2004

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Yamaha WR450FS 2004 Specification

The Yamaha WR450FS 2004 is a high-performance off-road motorcycle engineered for both competitive and recreational riding. This model is powered by a robust 449cc, liquid-cooled, four-stroke, single-cylinder engine that features a DOHC (Double Overhead Camshaft) configuration, ensuring efficient power delivery and optimal performance. The engine is paired with a five-speed wide-ratio transmission, providing versatility across various terrains and riding conditions.

The chassis of the WR450FS 2004 is constructed from a lightweight aluminum frame, contributing to improved handling and maneuverability. The suspension system includes a fully adjustable 46mm KYB front fork and a fully adjustable KYB rear shock, both designed to offer superior shock absorption and stability on rough trails. The braking system features a 250mm front disc brake and a 245mm rear disc brake, delivering reliable stopping power.

Additional features include an enduro-specific digital multifunction display, which provides essential information such as speed, distance, and time. The fuel tank has a capacity of 2.6 gallons, allowing for extended riding sessions without frequent refueling. The bike's ergonomics are optimized for rider comfort and control, with a seat height of 38 inches and ground clearance of 14.2 inches, making it suitable for navigating challenging off-road environments.

The WR450FS 2004 also incorporates several rider-friendly technologies, such as an electric start system for easy ignition and a compact engine design that contributes to the bike's overall agility. With a dry weight of approximately 249 pounds, the motorcycle strikes a balance between power and maneuverability, making it a preferred choice for enthusiasts seeking a reliable and high-performing off-road machine.

Yamaha WR450FS 2004 F.A.Q.

How do I properly break in the engine of my Yamaha WR450F 2004?

To break in the engine, ride at varying speeds and avoid full throttle for the first 600 miles (approximately 1,000 km). Change the oil after the first hour of operation and then again after the initial break-in period.

What is the recommended oil type and capacity for the Yamaha WR450F 2004?

The recommended oil type is Yamalube 4, 10W-40, or any other 4-stroke motorcycle oil with a similar viscosity. The oil capacity is approximately 1.27 liters (1.34 US quarts) when draining and replacing the oil filter.

How can I troubleshoot starting issues with my WR450F 2004?

Check the battery charge and connections, inspect the spark plug condition and gap, and ensure the fuel is fresh and the fuel line is not clogged. Also, verify that the kill switch is in the correct position.

What maintenance should be performed regularly on the Yamaha WR450F 2004?

Regular maintenance includes changing the oil and filter every 600 miles (1,000 km), cleaning and oiling the air filter, checking and adjusting the chain tension, and inspecting the brakes and tires.

How do I adjust the suspension on my WR450F 2004 for off-road riding?

To adjust the suspension, refer to the owner's manual for baseline settings. You can adjust the compression and rebound damping on the front forks and rear shock to suit your riding style and terrain.

What is the correct spark plug type for the Yamaha WR450F 2004?

The correct spark plug type is NGK CR8E. Make sure to check the gap, which should be set to 0.7-0.8 mm (0.028-0.031 inches).

How do I clean and maintain the air filter on my WR450F 2004?

Remove the air filter from the bike, wash it with a mild detergent and water, let it dry, and then apply an appropriate air filter oil. Reinstall the filter ensuring it is seated properly.

What are the tire pressure recommendations for the Yamaha WR450F 2004?

For off-road riding, a general recommendation is 12-15 psi in the front tire and 10-12 psi in the rear tire, adjusting based on terrain and rider preference.

How can I improve the fuel efficiency of my Yamaha WR450F 2004?

Maintain proper tire pressure, ensure regular maintenance such as oil changes and air filter cleaning, and avoid aggressive throttle use. Installing a fuel management system can also help optimize fuel use.

What are common electrical issues with the WR450F 2004 and how can I fix them?

Common issues include battery drainage and faulty connections. Ensure all electrical connections are clean and tight, and replace the battery if it does not hold a charge. Inspect for any damaged wires or connectors.