Contents

- GENERAL INFORMATION
  - LOCATION OF IMPORTANT LABELS
  - DESCRIPTION
  - MACHINE IDENTIFICATION
  - INCLUDED PARTS
  - IMPORTANT INFORMATION
  - CHECKING OF CONNECTION
  - SPECIAL TOOLS
  - CONTROL FUNCTIONS
  - STARTING AND BREAK-IN
  - TORQUE-CHECK POINTS
  - CLEANING AND STORAGE
- SPECIFICATIONS
  - GENERAL SPECIFICATIONS
  - MAINTENANCE SPECIFICATIONS
  - TIGHTENING TORQUES
  - 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 ELEMENT AND WATER PUMP
  - BALANCER
  - OIL PUMP
  - KICK SHAFT 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
  - IGNITION SYSTEM
  - THROTTLE POSITION SENSOR SYSTEM
- TUNING
  - ENGINE
  - CHASSIS

Yamaha YZ250FY 2009 Owner's Manual

Pages 278

Year 2009

Language(s)

of 278

Yamaha YZ250FY 2009 Specification

The Yamaha YZ250FY 2009 is a high-performance motocross bike engineered for competitive racing and off-road adventures. This model is equipped with a powerful 250cc, liquid-cooled, four-stroke, DOHC engine that delivers robust performance and exceptional reliability. The engine features a titanium five-valve cylinder head, which enhances the bike's power output and efficiency. A Keihin FCR-MX37 carburetor ensures precise fuel delivery, contributing to the YZ250FY's responsive throttle and smooth power band.

The bike's chassis is constructed from lightweight aluminum, providing a perfect balance of strength and agility. This frame design, combined with the bike's advanced suspension system, offers superior handling and stability on diverse terrains. The front suspension consists of a fully adjustable 48mm KYB inverted fork, while the rear suspension features a fully adjustable KYB shock with a dual-chamber design. Both suspension components are designed to absorb impacts and maintain traction, enhancing rider comfort and control.

The braking system on the YZ250FY includes a 250mm front disc brake and a 245mm rear disc brake, ensuring reliable stopping power under various conditions. The bike is fitted with 21-inch front and 19-inch rear wheels, providing optimal ground clearance and maneuverability. The tires are designed for maximum grip and durability, suitable for both hard-pack and soft terrain.

Ergonomically, the YZ250FY offers a rider-friendly design with adjustable handlebars and a comfortable seat that allows for easy movement and control. The bike's compact design and lightweight construction make it an agile contender in the motocross arena. Overall, the Yamaha YZ250FY 2009 stands out for its blend of power, agility, and durability, making it a popular choice among motocross enthusiasts and professional riders alike.

Yamaha YZ250FY 2009 F.A.Q.

What type of oil is recommended for the Yamaha YZ250FY 2009?

The Yamaha YZ250FY 2009 typically requires a high-quality 4-stroke engine oil with a viscosity rating of 10W-40. Always refer to the owner's manual for the manufacturer's recommendations.

How often should I change the oil in my Yamaha YZ250FY 2009?

For optimal performance, it's recommended to change the oil every 15 hours of riding time. Regular oil changes help maintain engine health and performance.

What is the correct tire pressure for Yamaha YZ250FY 2009?

The recommended tire pressure for the Yamaha YZ250FY 2009 is typically around 12-15 psi for off-road use. Adjust based on terrain and rider preference.

How can I improve the suspension setup on my Yamaha YZ250FY 2009?

To improve suspension, adjust the rebound and compression settings based on riding conditions. Consider consulting a professional for a custom setup tailored to your weight and riding style.

What spark plug type does the Yamaha YZ250FY 2009 require?

The Yamaha YZ250FY 2009 uses an NGK CR8E spark plug. Ensure to check the gap and replace it as per the maintenance schedule.

How do I troubleshoot starting issues with the Yamaha YZ250FY 2009?

Check the fuel supply, inspect the spark plug, and ensure the battery is fully charged. Also, verify that the kill switch is in the correct position.

What are common brake maintenance tips for the Yamaha YZ250FY 2009?

Regularly check the brake pads for wear and ensure the brake fluid is at the appropriate level. Bleed the brakes if they feel spongy to remove any air in the system.

How can I maintain the chain on my Yamaha YZ250FY 2009?

Clean and lubricate the chain regularly, checking for any signs of wear or damage. Adjust the tension according to the specifications in the owner's manual to prevent premature wear.

What should I do if the Yamaha YZ250FY 2009 overheats?

First, stop the engine to allow it to cool. Check the coolant level and inspect for any leaks. Ensure the radiator is clean and not blocked by debris.

How do I adjust the handlebars on the Yamaha YZ250FY 2009?

Loosen the handlebar clamps, adjust to the desired position, and then retighten the clamps to the recommended torque specification. Ensure handlebars are secure before riding.