2002 Yamaha WR250F(R) Owner's Service Manual (P/N 5UM-28199-50)

• Original OEM publication P/N 5UM-28199-50 (First Edition, November 2002).
• Official 860-page factory reference covering 2002 Yamaha WR250FR, WR250F, and WR250F(R) models, including USA, Europe, Canada, Australia, New Zealand, and South Africa regional variants.
• Details all critical engine and chassis tuning parameters alongside precise component identification diagrams.

Manual Documentation

This factory publication provides the exact technical baseline required for maintaining the 2002 WR250F lineup. It breaks down into seven primary chapters focusing on general information, periodic maintenance, engine and chassis assembly, electrical system architecture, and machine tuning settings. Mechanics get immediate access to the necessary factory data for core components like the DOHC 4-stroke engine, constant-mesh transmission, and monocross suspension. Always adhere strictly to standard shop safety practices and verify vehicle support stability before initiating any teardown or diagnostic procedures to prevent injury or equipment damage.

Specification and Reference Values

Technical data tables deliver the critical clearances, capacity limits, and torque settings you need right on the shop floor. For instance, the cylinder head warp limit is explicitly set at 0.05 mm. You will also find exact fluid requirements, with the coolant system capacity documented at 1.3 liters. The valve specification charts detail an intake valve clearance of 0.10–0.15 mm. Having these exact factory numbers allows technicians to verify component wear and reassembly tolerances without second-guessing.