Contents

- GENERAL INFORMATION
  - LOCATION OF IMPORTANT LABELS
  - DESCRIPTION
  - IDENTIFICATION
  - FEATURES
  - INCLUDED PARTS
  - IMPORTANT INFORMATION
  - BASIC SERVICE INFORMATION
  - SPECIAL TOOLS
  - CONTROL FUNCTIONS
  - STARTING AND BREAK-IN
  - MAINTENANCE AFTER BREAK-IN
  - TORQUE-CHECK POINTS
  - MOTORCYCLE CARE AND STORAGE
- SPECIFICATIONS
  - GENERAL SPECIFICATIONS
  - ENGINE SPECIFICATIONS
  - CHASSIS SPECIFICATIONS
  - ELECTRICAL SPECIFICATIONS
  - TIGHTENING TORQUES
  - LUBRICATION POINTS AND LUBRICANT TYPES
  - LUBRICATION SYSTEM CHART AND DIAGRAMS
  - CABLE ROUTING DIAGRAM
- PERIODIC CHECKS AND ADJUSTMENTS
  - MAINTENANCE INTERVALS
  - PRE-OPERATION INSPECTION AND MAINTENANCE
  - ENGINE
  - CHASSIS
  - ELECTRICAL SYSTEM
- CHASSIS
  - GENERAL CHASSIS
  - FRONT WHEEL
  - REAR WHEEL
  - FRONT BRAKE
  - REAR BRAKE
  - HANDLEBAR
  - FRONT FORK
  - STEERING HEAD
  - REAR SHOCK ABSORBER ASSEMBLY
  - SWINGARM
  - CHAIN DRIVE
- ENGINE
  - ENGINE REMOVAL
  - CAMSHAFT
  - CYLINDER HEAD
  - VALVES AND VALVE SPRINGS
  - CYLINDER AND PISTON
  - ELECTRIC STARTER
  - CLUTCH
  - KICKSTATER
  - SHIFT SHAFT
  - OIL PUMP AND BALANCER GEAR
  - GENERATOR AND STARTER CLUTCH
  - CRANKCASE
  - CRANKSHAFT ASSEMBLY AND BALANCER SHAFT
  - TRANSMISSION
- COOLING SYSTEM
  - RADIATOR
  - WATER PUMP
- FUEL SYSTEM
  - FUEL TANK
  - THROTTLE BODY
- ELECTRICAL SYSTEM
  - IGNITION SYSTEM
  - ELECTRIC STARTING SYSTEM
  - CHARGING SYSTEM
  - COOLING SYSTEM (For JPN)
  - FUEL INJECTION SYSTEM
  - FUEL PUMP SYSTEM
  - ELECTRICAL COMPONENTS
- TROUBLESHOOTING
  - TROUBLESHOOTING
  - LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS
- TUNING
  - CHASSIS
- YZ250FXF 2015WIRING DIAGRAM

Yamaha YZ250FXF 2015 Owner's Manual

Pages 396

Year 2015

Language(s)

of 396

Yamaha YZ250FXF 2015 Specification

The Yamaha YZ250FX 2015 is a high-performance off-road motorcycle engineered specifically for cross-country racing. It features a 249cc, liquid-cooled, DOHC 4-stroke engine designed for optimal power delivery and reliability. The engine is paired with a 6-speed transmission that offers a wide range of gearing options, providing versatility for various terrains and riding conditions. The bike is equipped with Yamaha's innovative fuel injection system, which ensures consistent fuel delivery and improved throttle response.

The chassis is constructed from a lightweight aluminum bilateral beam frame, which offers excellent rigidity and strength while keeping the overall weight low. This contributes to enhanced handling and maneuverability. The suspension system includes a fully adjustable KYB air-oil separate front fork and a fully adjustable KYB rear shock, providing a balance of comfort and performance over rough terrain.

Braking is handled by a wave-style disc brake system, with a 270mm front disc and a 245mm rear disc, ensuring strong and reliable stopping power. The bike features an 18-inch rear wheel and a 21-inch front wheel, both fitted with off-road tires designed for maximum traction and durability.

Ergonomics are optimized for rider comfort and control, with a flat seat design and a narrow tank to facilitate easy movement. Additionally, the bike includes an electric start system for convenience, as well as a kick-start backup. The Yamaha YZ250FX 2015 stands out as a robust and versatile option for serious off-road enthusiasts, combining advanced engineering and rider-focused design to deliver a superior cross-country racing experience.

Yamaha YZ250FXF 2015 F.A.Q.

What type of engine oil is recommended for the Yamaha YZ250FXF 2015?

For the Yamaha YZ250FXF 2015, it is recommended to use a high-quality 10W-40 four-stroke motorcycle oil with a JASO MA rating.

How often should I change the engine oil on my Yamaha YZ250FXF 2015?

It is recommended to change the engine oil every 10 hours of riding or after every race for optimal performance and longevity of the engine.

What is the correct tire pressure for the Yamaha YZ250FXF 2015?

The recommended tire pressure for the Yamaha YZ250FXF 2015 is 15 psi for both the front and rear tires. Adjust the pressure according to the terrain and riding conditions.

How do I adjust the suspension on the Yamaha YZ250FXF 2015 for better performance?

To adjust the suspension, refer to the owner’s manual for baseline settings. Adjust the preload, compression, and rebound damping according to your weight, riding style, and terrain.

What should I do if my Yamaha YZ250FXF 2015 won’t start?

First, check the fuel level, and ensure the fuel valve is on. Verify that the battery is charged and the spark plug is in good condition. Inspect the kill switch and wiring for any issues.

How do I clean the air filter on my Yamaha YZ250FXF 2015?

Remove the air filter from the airbox, wash it with a mild detergent, rinse thoroughly, and let it dry completely. Apply air filter oil evenly before reinstalling it.

What is the recommended chain tension for the Yamaha YZ250FXF 2015?

The chain tension should have about 1.2 to 1.6 inches (30-40 mm) of slack at the midpoint between the front and rear sprockets. Adjust as necessary to maintain proper tension.

How can I improve the braking performance on my Yamaha YZ250FXF 2015?

Ensure the brake pads are not worn and replace them if necessary. Bleed the brake lines to remove air bubbles and maintain the correct brake fluid level. Clean the rotors regularly to prevent debris buildup.

What regular maintenance should be performed on the Yamaha YZ250FXF 2015?

Regular maintenance includes changing the oil and filter, cleaning and oiling the air filter, checking and adjusting chain tension, inspecting brake pads and fluid, and checking all bolts and nuts for tightness.

How do I winterize my Yamaha YZ250FXF 2015?

To winterize the bike, drain the fuel or add a fuel stabilizer, change the oil, clean and lubricate the chain, and disconnect the battery. Store the bike in a cool, dry place covered with a breathable cover.