Contents

- GENERAL INFORMATION
  - DESCRIPTION
  - MACHINE IDENTIFICATION
  - IMPORTANT INFORMATION
  - CHECKING OF CONNECTION
  - SPECIAL TOOLS
  - CONTROL FUNCTIONS
  - FUEL
  - STARTING AND BREAK-IN
  - TORQUE-CHECK POINTS
  - CLEANING AND STORAGE
- SPECIFICATIONS
  - GENERAL SPECIFICATIONS
  - MAINTENANCE SPECIFICATIONS
  - GENERAL TORQUE SPECIFICATIONS
  - DEFINITION OF UNITS
  - LUBRICATION DIAGRAMS
  - CABLE ROUTING DIAGRAM
- REGULAR INSPECTION AND ADJUSTMENTS
  - MAINTENANCE INTERVALS
  - PRE-OPERATION INSPECTION AND MAINTENANCE
  - ENGINE
  - CHASSIS
  - ELECTRICAL
- ENGINE
  - SEAT, FUEL TANK AND SIDE COVERS
  - EXHAUST PIPE AND SILENCER
  - RADIATOR
  - CARBURETOR
  - CAMSHAFTS
  - CYLINDER HEAD
  - VALVES AND VALVE SPRINGS
  - CYLINDER AND PISTON
  - CLUTCH
  - OIL FILTER, WATER PUMP AND CRANKCASE COVER (RIGHT)
  - BALANCER
  - OIL PUMP
  - KICK AXLE AND SHIFT SHAFT
  - CDI MAGNETO
  - ENGINE REMOVAL
  - CRANKCASE AND CRANKSHAFT
  - TRANSMISSION, SHIFT CAM AND SHIFT FORK
- CHASSIS
  - FRONT WHEEL AND REAR WHEEL
  - FRONT BRAKE AND REAR BRAKE
  - FRONT FORK
  - HANDLEBAR
  - STEERING
  - SWINGARM
  - REAR SHOCK ABSORBER
- ELECTRICAL
  - ELECTRICAL COMPONENTS AND WIRING DIAGRAM
  - MAP-CONTROLLED CDI UNIT
  - IGNITION SYSTEM
  - TPS (THROTTLE POSITION SENSOR) SYSTEM
- TUNING
  - ENGINE
  - CHASSIS

Yamaha YZ450FW 2007 Owner's Manual

Pages 310

Year 2007

Language(s)

of 310

Yamaha YZ450FW 2007 Specification

The Yamaha YZ450FW 2007 is a high-performance off-road motorcycle engineered for competitive motocross racing. At its core, the bike features a 449cc liquid-cooled, DOHC four-stroke engine, delivering robust power and torque for demanding terrains. The engine is paired with a five-speed manual transmission, offering a wide range of gear ratios to optimize performance across various track conditions. Fuel delivery is managed by a 39mm Keihin FCR carburetor, ensuring precise throttle response and consistent power output.

The chassis is constructed from lightweight aluminum, contributing to the bike's agility and handling precision. The front suspension consists of 48mm Kayaba inverted forks with adjustable compression and rebound damping, providing 11.8 inches of travel. The rear suspension is a Kayaba mono-shock system, also fully adjustable, with 12.4 inches of travel, enhancing stability and control over rough terrain.

Braking is handled by a 250mm front disc and a 245mm rear disc, both equipped with wave rotors for improved heat dissipation and stopping power. The bike's overall weight is approximately 220 pounds, contributing to its nimble performance. The ergonomics of the YZ450FW 2007 are designed to accommodate aggressive riding positions, featuring a slim seat, wide footpegs, and adjustable handlebars.

Additional features include a titanium exhaust system that reduces weight and enhances engine efficiency, and a digital CDI ignition that optimizes spark timing for better performance and fuel efficiency. The bike comes with a 1.8-gallon fuel tank, providing ample range for race conditions. Overall, the Yamaha YZ450FW 2007 is a meticulously engineered machine, built to deliver superior performance, durability, and rider comfort in competitive motocross environments.

Yamaha YZ450FW 2007 F.A.Q.

What is the recommended oil type and capacity for the Yamaha YZ450FW 2007?

The recommended oil type for the Yamaha YZ450FW 2007 is SAE 10W-40, and the engine oil capacity is 1.1 liters (1.16 US qt).

How often should I clean the air filter on my Yamaha YZ450FW 2007?

The air filter should be cleaned after every 5-10 hours of riding, or more frequently if you are riding in dusty conditions.

What is the correct tire pressure for the Yamaha YZ450FW 2007?

The recommended tire pressure for the Yamaha YZ450FW 2007 is 15 psi for both the front and rear tires.

How do I adjust the suspension settings on the Yamaha YZ450FW 2007?

To adjust the suspension, use the clickers on the top and bottom of the forks and the rear shock. Consult the owner's manual for detailed settings based on your weight and riding conditions.

What spark plug should be used for the Yamaha YZ450FW 2007?

The recommended spark plug for the Yamaha YZ450FW 2007 is NGK CR8E or a compatible equivalent.

How can I troubleshoot a starting problem on my Yamaha YZ450FW 2007?

Check the spark plug, fuel supply, and battery connections. Ensure the kill switch is off and inspect the ignition system. Clean or replace components as needed.

What is the maintenance schedule for the Yamaha YZ450FW 2007?

Regular maintenance includes oil changes every 10 hours, valve clearance checking every 20 hours, and routine inspection of brakes, chain, and sprockets. Refer to the manual for detailed intervals.

How do I adjust the chain tension on my Yamaha YZ450FW 2007?

To adjust the chain tension, loosen the axle nut and adjust the chain adjusters evenly on both sides. Ensure there is about 1.2-1.6 inches of slack at the tightest point.

What fuel should I use for the Yamaha YZ450FW 2007?

Use unleaded gasoline with a minimum octane rating of 95 (RON). Avoid using ethanol blends greater than 10%.

How do I bleed the brakes on my Yamaha YZ450FW 2007?

To bleed the brakes, attach a clear hose to the bleeder valve, pump the brake lever, open the valve to let air out, close it, and then release the lever. Repeat until no air bubbles are seen in the hose.