2009 Yamaha YZ250FY Service Manual (USA, CDN, AUS, NZ)

2009 Yamaha YZ250FY Service Manual

• Covers 2009 Yamaha YZ250FY motocross machines with liquid-cooled DOHC 4-stroke engines
• Official Yamaha publication P/N LIT-11626-22-56, 2009 edition
• Contains 275 pages of technical specifications, maintenance procedures, and lubrication diagrams
• Delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• Detailed torque tables provide fastening specifications for engine, chassis, and electrical components
• This 2009 edition is the definitive factory reference for the 5XC-28199-15 model unit

Manual Content Summary

This publication provides detailed documentation for the 2009 Yamaha YZ250FY, including complete engine overhaul, chassis maintenance, and electrical system diagnostics. The structure follows the factory standard for competitive motocross units, starting with clear identification markers and safe operating procedures before moving into the core technical chapters. The manual details disassembly and assembly sequences for the liquid-cooled 4-stroke engine, including the DOHC cylinder head, carburetor, and clutch assemblies. Chassis chapters document the suspension settings, including specific oil volumes for the telescopic forks and rear monocross shock absorber. The electrical section includes wiring circuit references and component testing values for the CDI magneto system.

Specification Highlights

Technical data is provided for engine tolerances, including valve clearance ranges for intake at 0.10–0.15 mm and exhaust at 0.17–0.22 mm. The lubrication system uses a trochoid pump design, and cooling system capacity is documented at 0.99 liters. The torque tables include critical values like the 135 Nm rear wheel axle nut tightening spec and the 55 Nm footrest bracket specification. Piston pin bore diameter is standard at 16.002–16.013 mm, with a wear limit specified at 16.043 mm. The manual also includes guidance on what an OEM service publication covers to assist technicians with routine maintenance intervals.

Reference only — always consult a certified technician before performing service on this equipment. An official 275-page Yamaha OEM workshop manual covering the 2009 Yamaha YZ250FY, documenting engine, chassis, electrical, and fuel-delivery specifications for the factory 5XC-series production run.