This workshop manual covers the Yamaha TTR90, produced between 2004 and 2006. As part of the first generation (2000-2007), this model exemplifies Yamaha's commitment to engineering quality and reliability, designed for recreational riding and entry-level off-road use. Its 88 cc 4-stroke SOHC engine, coupled with a 4-speed semi-automatic transmission and a robust steel diamond frame, provides a capable and user-friendly platform. The TTR90 is built to offer dependable performance and an enjoyable riding experience.

The purpose of this manual is to provide comprehensive guidance for the maintenance, repair, and troubleshooting of your Yamaha TTR90. It details essential procedures, technical specifications, and safety information necessary for proper upkeep. Covering aspects from routine servicing, such as oil changes and spark plug maintenance, to more involved repairs, this resource is invaluable for owners, mechanics, and technicians. By following the instructions within, users can ensure the longevity, optimal performance, and safe operation of their vehicle.