2025 Yamaha YZ250X Service and Repair Manual

Yamaha's service volume for the 2025 YZ250X is LIT-11626-38-49, written for the YZ250XS and for that model year alone.

Engine work

• Cylinder and piston measurement with wear limits
• Power valve cleaning and timing
• Clutch service and replacement
• Crankcase splitting, crank and transmission rebuild
• Factory carburetor settings and ignition checks

Chassis coverage is as detailed as the engine sections: fork and rear shock disassembly with the specified oil quantity, brake and wheel service, bearing replacement, steering head adjustment, and torque figures for the frame and swingarm hardware. The electrical chapter supplies the wiring diagram and fault-tracing sequences.

Fitment is worth confirming before you order. The code YZ250XS appears on the frame label, and read together with LIT-11626-38-49 it tells you this is the book Yamaha wrote for your bike.