This workshop service repair manual covers the Stihl BR 500, BR 550, and BR 600 models. These powerful blowers are engineered with robust 2-stroke gasoline engines, featuring displacements ranging from 46.0 cm³ for the BR 500 to 64.8 cm³ for the BR 600, and direct-drive transmissions. They are designed for efficient and reliable operation, incorporating features such as variable speed triggers, recoil starters, and electronic ignition systems. The anti-vibration system, throttle lock, and safety switch ensure user comfort and operational safety during demanding tasks. This comprehensive manual provides essential information for maintaining and repairing your Stihl blower. It details critical maintenance procedures, including air filter cleaning and spark plug checks, along with specifications for fuel tank capacities and the recommended fuel-oil mixture ratio. Technical data, such as engine power outputs and air flow rates for the BR 600, are included to aid in diagnostics and performance understanding. This resource is designed to assist owners, mechanics, and technicians in ensuring the longevity and optimal performance of their Stihl BR 500, BR 550, and BR 600 units.