To make it easier for you to choose the right manual, we have compiled various information for you below, such as model designations, types, and production years.
The following models are encompassed by this manual: WR450F, WR450F(T), Yamaha Motor Corporation, Ltd
2004 Yamaha WR450F
2004 Yamaha WR450F(T)
2005 Yamaha WR450F
2005 Yamaha WR450F(T)
Engine: 450 cc liquid-cooled DOHC 4-stroke; 4 valves, 97.0 mm — 60.8 mm, 13.0:1, Mikuni® fuel injection, 44 mm.
Production year(s): 2004, 2005
Number of pages: 758
Manual Language: English
Instant delivery: Your download link will appear on the checkout page after your payment is complete.
Printable: Yes (all printers)
"Off-Road Motorcycle Shop Repair: Fix Your Yamaha WR450F with PDF Troubleshooting Manual"
Welcome to the ultimate guide for repairing and maintaining your 2004-2005 Yamaha WR450F and WR450F(T) off-road motorcycles. Whether you're a rider or a mechanic, this comprehensive resource will provide you with engine specifications, maintenance tips, common issues, tuning suggestions, available accessories, owner reviews, and more. Keep your Yamaha WR450F running smoothly and unleash its full off-road potential with our expert guidance.
Engine Specifications/Technical Data:
• The WR450F is equipped with a liquid-cooled, four-stroke, single-cylinder engine.
• It has a displacement of 449cc, providing ample power for off-road adventures.
• The engine features a bore and stroke of 95.0mm x 63.4mm.
• The compression ratio is 12.3:1, contributing to its impressive performance.
• Fuel is delivered through a Keihin FCR39 carburetor, ensuring reliable fueling.
• The ignition system utilizes a CDI (Capacitor Discharge Ignition) for quick starts.
• The motorcycle has a five-speed transmission, enabling smooth gear changes.
• It features a wet, multi-plate clutch for efficient power transfer.
• The WR450F utilizes an electric starter for convenience.
• The exhaust system is equipped with a lightweight, high-flow muffler.
• It has a telescopic front suspension with adjustable preload, compression, and rebound damping.
• The rear suspension is a link-type system with adjustable preload and compression damping.
• Front braking is handled by a single disc, while the rear brake is also a disc.
• The motorcycle has a wheelbase of 58.5 inches, providing stability off-road.
• It features a ground clearance of 14.6 inches, allowing it to tackle various terrains.
• The fuel tank capacity is 2.6 gallons, providing a decent range.
• The dry weight of the motorcycle is approximately 238 pounds.
• The front tire size is 80/100-21, and the rear tire size is 110/100-18.
• The electrical system includes a maintenance-free battery for reliable starting.
• The maximum power output is around 48 horsepower.
Facts and Details:
- The WR450F is Yamaha's high-performance off-road motorcycle, designed for competition and trail riding.
- The WR450F(T) is a limited-edition model that includes additional features like a headlight and taillight for dual-sport capabilities.
- These motorcycles feature a lightweight aluminum frame for agile handling.
- The engine is based on Yamaha's YZ motocross bike, ensuring potent off-road performance.
- Regular maintenance is crucial to keep the WR450F running at its best.
- Oil and oil filter changes should be performed every 10-15 hours of riding or at least once every three months.
- Air filter cleaning and replacement are necessary to prevent engine damage from dust and debris.
- Spark plugs should be inspected and replaced if fouled or worn.
- Valve clearance should be checked and adjusted periodically according to the manufacturer's specifications.
- Common issues include carburetor problems, such as clogged jets or incorrect fuel mixture.
- Cleaning or rebuilding the carburetor can often resolve these issues.
- Upgrading the exhaust system and air intake can improve overall performance.
- Suspension upgrades, such as aftermarket shocks and springs, can enhance handling and comfort.
Available Accessories, Attachments, and Aftermarket Options:
► Skid plates and engine guards for added protection during off-road riding.
► Handguards to shield hands from branches and debris.
► Larger fuel tanks for extended riding range.
► Radiator guards to prevent damage from rocks and debris.
► High-performance exhaust systems for increased power and a deeper exhaust note.
► Rekluse auto-clutches for improved low-speed control and reduced stalling.
► Aftermarket suspension components for enhanced performance and adjustability.
► Lighting kits for converting the WR450F into a street-legal dual-sport motorcycle.
Owner Reviews and Opinions:
* Owners praise the WR450F for its powerful engine and excellent suspension.
* The motorcycle offers great off-road performance and agility.
* The electric starter is appreciated for its convenience and reliability.
* Some riders mention that the maintenance intervals can be demanding, requiring regular attention.
* The limited edition WR450F(T) is valued for its dual-sport capabilities, allowing riders to explore both on and off-road.
Most Frequently Repaired Parts and Common Breakages:
→ Carburetor: Cleaning or rebuilding may be necessary due to clogged jets or other issues.
→ Air filter: Cleaning and replacement to ensure proper air intake and engine protection.
→ Spark plug: Inspection and replacement if fouled or worn.
→ Clutch plates and springs: Regular maintenance and replacement for smooth operation.
→ Chain and sprockets: Lubrication, adjustment, and replacement when worn or damaged.
→ Wheel bearings: Regular inspection and replacement if loose or worn.
→ Radiator hoses: Inspection for leaks and replacement if damaged.
→ Suspension seals and bushings: Periodic maintenance and replacement if leaking or worn.
→ Brake pads: Inspection and replacement when worn for optimal braking performance.
→ Throttle cables: Lubrication and adjustment for smooth throttle operation.
→ Electrical connections: Regular inspection and cleaning to ensure reliable electrical performance.
To troubleshoot your Yamaha motorcycle, simply click the button below to download the comprehensive shop manual.
Once your payment is complete, you will immediately receive an email containing the payment and download information, and your official Yamaha OEM shop manual and parts list download link will be available on the checkout page.