Contents

- GENERAL INFORMATION
  - LOCATION OF IMPORTANT LABELS
  - DESCRIPTION
  - CONSUMER INFOMATION
  - 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
  - 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 AND REED VALVE
  - CYLINDER HEAD, CYLINDER AND PISTON
  - CLUTCH
  - KICK SHAFT AND SHIFT SHAFT
  - YPVS GOVERNOR
  - WATER PUMP
  - 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
  - SOLENOID VALVE SYSTEM
  - THROTTLE POSITION SENSOR SYSTEM
- TUNING
  - ENGINE
  - CHASSIS

Yamaha YZ250Z 2011 Owner's Manual

Pages 250

Year 2011

Language(s)

of 250

Yamaha YZ250Z 2011 Specification

The Yamaha YZ250Z 2011 is a high-performance off-road motorcycle known for its exceptional power, agility, and durability. It features a 249cc, liquid-cooled, two-stroke, reed-valve inducted engine, which provides a significant power-to-weight ratio, making it suitable for competitive motocross racing and challenging terrains. The engine is paired with a Keihin PWK38S carburetor that ensures precise fuel delivery and optimal throttle response.

The bike's transmission system includes a five-speed, close-ratio gearbox designed to handle the rigors of off-road racing, ensuring smooth and rapid gear shifts. Its frame is constructed from lightweight, high-strength aluminum, contributing to the overall agility and handling of the motorcycle. The suspension system comprises a fully adjustable KYB Speed-Sensitive System (SSS) front fork and a fully adjustable KYB rear shock, which provide excellent shock absorption and stability across varied terrains.

Braking performance is assured by the presence of robust, lightweight wave disc brakes both at the front and rear, offering superior stopping power and heat dissipation. The YZ250Z 2011 comes with a 21-inch front wheel and a 19-inch rear wheel, both fitted with high-traction tires suitable for off-road conditions. The bike's ergonomics are designed to offer maximum rider comfort and control, with features like a race-inspired seat, handlebar positioning, and narrow bodywork for improved rider mobility.

Fuel capacity stands at 2.1 gallons, allowing for extended riding sessions without frequent refueling. The dry weight of the motorcycle is approximately 227 pounds, ensuring a balanced combination of power and maneuverability. The Yamaha YZ250Z 2011 remains a popular choice among off-road enthusiasts due to its blend of advanced engineering, rugged build, and competitive performance capabilities.

Yamaha YZ250Z 2011 F.A.Q.

What is the recommended tire pressure for the Yamaha YZ250Z 2011 for off-road use?

For off-road use, the recommended tire pressure for the Yamaha YZ250Z 2011 is typically around 12 psi for the front and rear tires. Adjust based on terrain and rider preference.

How often should I change the engine oil on my Yamaha YZ250Z 2011?

It's recommended to change the engine oil every 10 hours of riding or after every race, whichever comes first, to ensure optimal engine performance and longevity.

What type of spark plug should be used for the Yamaha YZ250Z 2011?

The recommended spark plug for the Yamaha YZ250Z 2011 is the NGK BR8EG. Ensure it is properly gapped to 0.7-0.8 mm.

How do I adjust the suspension settings for better handling on my Yamaha YZ250Z 2011?

To adjust the suspension, start by setting the sag, then adjust the compression and rebound damping based on your weight and the track conditions. Refer to the owner's manual for specific guidance.

What is the proper way to clean the air filter on a Yamaha YZ250Z 2011?

Remove the air filter, wash it with a mild detergent, rinse thoroughly, allow it to dry completely, and then apply a light coat of air filter oil before reinstalling.

What are common troubleshooting steps if the Yamaha YZ250Z 2011 won't start?

Check the fuel supply, inspect the spark plug for fouling, ensure the kill switch is in the run position, and check for any blockages in the carburetor.

How can I improve the performance of my Yamaha YZ250Z 2011?

Performance can be enhanced by upgrading the exhaust system, optimizing the jetting, and ensuring regular maintenance like air filter cleaning and proper lubrication.

How do I properly store my Yamaha YZ250Z 2011 during the off-season?

Clean the bike thoroughly, drain the fuel or add a fuel stabilizer, lubricate all moving parts, and store it in a cool, dry place. Disconnect the battery if applicable.

What should I do if the Yamaha YZ250Z 2011 engine overheats?

Stop the engine immediately to prevent damage. Check the coolant level and ensure the radiator is not blocked. Allow the engine to cool before resuming use.

How do I adjust the chain tension on a Yamaha YZ250Z 2011?

Loosen the rear axle nut, adjust the chain adjusters evenly on both sides to achieve the recommended slack of 30-40 mm, then retighten the axle nut.