2007-2014 Yamaha WR250F(W) Service Manual

WR250F and WR250FW Technical Manual

• Covers the 2007–2014 Yamaha WR250F and WR250FW, documenting service data for the 249cc single-cylinder, liquid-cooled, 4-stroke engine configuration.
• Official Yamaha publication P/N 5UM-28199-54, first edition dated August 2006.
• Contains 56 exploded-view assembly diagrams and 15 torque-check reference charts covering frame, steering, suspension, and brake system assemblies.
• Includes detailed technical specifications for the FCR-MX37 carburetor, CDI ignition system, and 5-speed constant-mesh transmission.
• OCR text layer lets you jump to a torque spec by keyword.
• Your order stays downloadable from your account for life.
• This 912-page 2006 first edition serves as the foundational reference manual for all subsequent model year updates through 2014.

Documented Maintenance and Systems

The workshop manual coverage begins with detailed sections on machine identification, including engine serial number locations and model code information. Chapters dedicated to regular inspection and adjustments provide the foundation for routine maintenance intervals. The engine section documents the top end, including cam drive methods, valve train specifications, piston-to-cylinder tolerances, and crankshaft dimensional data. Engine timing chain and valve clearance data are specified for both intake and exhaust components, ensuring precision during service intervals.

Specification and Technical Data

Technical specifications document the 77.00–77.01 mm cylinder bore range. Coolant system capacity is documented at 0.99 liters in the general specifications table. Spark plug gap for the CR9E/NGK plug is specified at 0.7–0.8 mm. Additional sections cover the chassis architecture, including fork suspension oil capacity, brake disc tolerances, and wheel axle torque specifications. The electrical data section details AC magneto output, battery voltage, and connector pinout reference values for the CDI ignition unit.

Reference only — always consult a certified technician before performing service on this equipment.

An official 912-page Yamaha OEM service manual covering the 2007–2014 WR250F(W), documenting engine, chassis, electrical, and specification data for the 5UM-series engine architecture.