This manual covers the Yamaha WR426F and WR400F models from the 2002 production year. Specifically, it details parts for the WR426FP (5NG5), WR426F (5nG6), WR426FP (5NG8), and WR400F (5GSA). These motorcycles are designed for off-road performance, combining robust engineering with the reliability expected from Yamaha. This illustrated parts list serves as a comprehensive resource for identifying and ordering components.

The purpose of this manual is to provide a detailed, illustrated parts list with exploded views to aid in the disassembly and assembly of your Yamaha WR426F or WR400F. By referencing the clear diagrams and part numbers, owners and technicians can efficiently identify the correct components for maintenance and repair, ensuring the continued optimal performance and longevity of the motorcycle.