This manual covers the Yamaha YTM 225 Tri-Moto, produced from 1983 to 1987, including all DRS, DRN, and DXK model variants. As a significant entry in Yamaha's three-wheeled ATV history, the YTM 225 was designed as a capable recreational and utility vehicle, known for its reliable four-stroke, air-cooled engine and semi-automatic transmission. Its engineering quality and robust design made it a popular choice for its era, offering a solid platform for various riding conditions and intended uses. This comprehensive factory service repair workshop manual provides essential information for the maintenance and repair of your Yamaha YTM 225 Tri-Moto. It details procedures for all major systems, including the powertrain, chassis, electrical system, and brakes, with in-depth coverage from routine maintenance to complete component overhauls. This English-language manual, typically ranging from 300 to 600 pages, includes step-by-step instructions, troubleshooting guides, and detailed wiring diagrams, empowering owners and technicians to effectively maintain and repair their vehicle.