Contents

- GENERAL INFORMATION
  - LOCATION OF IMPORTANT LABELS
  - DESCRIPTION
  - CONSUMER INFORMATION
  - INCLUDED PARTS
  - IMPORTANT INFORMATION
  - CHECKING OF CONNECTION
  - SPECIAL TOOLS
  - CONTROL FUNCTIONS
  - STARTING AND BREAK-IN
  - TORQUE-CHECK POINTS
  - MAINTENANCE AFTER BREAK-IN
  - 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 YZ250K2, YZ250XK YZ250, YZ250X 2019 Owner's Manual

Yamaha YZ250K2, YZ250XK YZ250, YZ250X 2019 manual cover

Pages 252

Year 2019

Language(s)

of 252

Yamaha YZ250K2, YZ250XK YZ250, YZ250X 2019 Specification

The 2019 Yamaha YZ250K2, YZ250XK, YZ250, and YZ250X models represent the pinnacle of Yamaha's engineering prowess in the off-road motorcycle segment. These models feature a 249cc liquid-cooled, 2-stroke engine known for its explosive power and exceptional throttle response. The reed-valve inducted engine is paired with Yamaha’s proprietary Power Valve System (YPVS), ensuring optimal performance across the power band. The transmission is a constant-mesh 5-speed, allowing for seamless gear transitions and superior control.

The frame is constructed from lightweight aluminum, providing a perfect balance between strength and agility. The advanced suspension system includes a fully adjustable KYB Speed-Sensitive System (SSS) fork and a fully adjustable KYB rear shock, both designed to handle the most challenging terrains with ease. The chassis geometry is optimized for stability and maneuverability, giving the rider confidence in both tight corners and high-speed straights.

The braking system comprises front and rear disc brakes, offering reliable stopping power under all conditions. The bike is equipped with Dunlop Geomax MX3S tires, which provide excellent traction and durability on diverse surfaces. Ergonomically, the YZ250 series features a flat seat and narrow fuel tank, allowing for greater rider movement and control. The handlebars and footpegs are designed for optimal rider comfort and control, even during long rides.

Aesthetically, the 2019 models come with modern, aggressive graphics and a sleek body design that not only enhances the bike's appearance but also its aerodynamics. With a dry weight of approximately 227 pounds and a fuel capacity of 2.1 gallons, these motorcycles are engineered for performance, agility, and endurance. Whether in motocross or cross-country, the Yamaha YZ250 and YZ250X models deliver unparalleled performance and reliability.

Yamaha YZ250K2, YZ250XK YZ250, YZ250X 2019 F.A.Q.

What type of fuel should I use for my Yamaha YZ250K2, YZ250XK YZ250, or YZ250X 2019?

Use unleaded gasoline with a minimum octane rating of 91. It's important to avoid using ethanol-based fuels to ensure optimal performance and longevity of the engine.

How often should I change the air filter on my Yamaha YZ250 models?

The air filter should be checked and cleaned after every ride in dusty conditions. In less demanding environments, replace or clean it every 5-10 hours of riding.

What is the recommended tire pressure for Yamaha YZ250 series bikes?

For optimal performance, maintain a tire pressure of 12-15 psi in the front and 10-12 psi in the rear, adjusting based on terrain and rider preference.

How can I troubleshoot a starting issue with my Yamaha YZ250X 2019?

Check the spark plug for fouling, ensure the fuel valve is on, and inspect the air filter for clogs. If these are fine, inspect the fuel line for blockages or leaks.

What maintenance should be performed regularly on the Yamaha YZ250 models?

Regular maintenance includes checking and adjusting chain tension, lubricating bearings, inspecting brake pads, and changing transmission oil every 10 hours of operation.

How do I adjust the suspension settings on my Yamaha YZ250XK?

To adjust the suspension, start with the rebound and compression settings on both the front forks and rear shock. Refer to the manual for baseline settings, and adjust according to riding style and terrain.

What is the correct spark plug gap for Yamaha YZ250K2?

The correct spark plug gap for the Yamaha YZ250K2 is 0.7-0.8 mm. Ensure the spark plug is clean and properly gapped for optimal ignition performance.

How do I bleed the brakes on my Yamaha YZ250?

To bleed the brakes, start by removing the brake fluid reservoir cap, attach a clear tube to the bleeder valve, and pump the brake lever several times. Open the valve to release air and old fluid. Repeat until no air bubbles are visible.

What should I do if my Yamaha YZ250X engine overheats?

Stop the bike immediately to allow the engine to cool. Check the coolant level and ensure the radiator is not clogged with debris. Inspect for any coolant leaks and ensure the radiator cap is in good condition.

How do I properly store my Yamaha YZ250X during the off-season?

Clean the bike thoroughly, drain the fuel tank or add a fuel stabilizer, lubricate all moving parts, remove the battery and store it in a cool, dry place, and cover the bike to protect it from dust and moisture.