The Yamaha YZF-R1, produced for the 1998-1999 model years, is a groundbreaking sportbike renowned for its revolutionary design and performance. As the first generation of a legendary lineage, code-named RN01, this motorcycle redefined the liter-class segment with its compact dimensions, lightweight construction, and potent 998cc inline 4-cylinder engine. Its innovative Deltabox III aluminum frame and focus on mass centralization contributed to exceptional handling and agility, earning it numerous accolades, including Motorcycle of the Year and Best 1000cc Sportbike from prominent publications in 1998.

This manual provides comprehensive parts and service information for the Yamaha YZF-R1 (1998-1999), serving as an essential resource for owners and technicians. It details all major systems and components, from the engine mechanicals and fuel system to the electrical and braking systems, offering detailed part number referencing and exploded view diagrams. The manual's scope covers front-to-back coverage, facilitating accurate part identification, sourcing, and ordering, thereby enabling owners and workshops to maintain and repair the motorcycle to its original condition with OEM-level precision.