This comprehensive workshop service repair manual is specifically designed for Stihl BR 320, 400, SR320, and 400 backpack blowers. It offers detailed instructions and high-quality diagrams, making it ideal for DIY enthusiasts looking to service and repair their Stihl blowers. The manual covers a wide range of topics essential for proper maintenance and troubleshooting. You'll find sections on specifications, clutch and chain drive system, chain brake and tensioner, engine operation, ignition system, rewind starter, AV handle system, master control and handle system, chain lubrication, fuel system, and special servicing tools and aids. The information presented in this manual will equip you with the knowledge to confidently perform a variety of repairs and maintenance tasks, potentially saving you time and money compared to professional repair services.

The Stihl BR 320, BR 400, SR320, and SR400 are a series of powerful and versatile backpack blowers designed for professional and demanding applications. These models are known for their exceptional performance, durability, and user-friendliness. The BR 320 and BR 400 are standard models, while the SR320 and SR400 are "Street Ready" versions optimized for clearing leaves and debris in urban environments. All models are equipped with Stihl's renowned 2-MIX engine technology, which delivers impressive power while minimizing fuel consumption and emissions. The BR 320 and SR320 are powered by a 31.8 cc engine, while the BR 400 and SR400 boast a larger 41.3 cc engine, providing even more power for tackling heavier debris. These blowers feature a comfortable and adjustable harness system, allowing for extended operation without fatigue. Additionally, the blowers are equipped with a variety of ergonomic features, including a multi-position throttle lever and a large air filter for enhanced operator comfort and ease of use. The Stihl BR 320, BR 400, SR320, and SR400 are renowned for their robust construction and reliable performance. These blowers are built to withstand the rigors of professional use, featuring a durable plastic housing and reinforced components. The 2-MIX engine utilizes a stratified charge system, which ensures optimal fuel combustion and reduces harmful emissions. The blowers also feature a low-emission muffler for quieter operation. The "Street Ready" SR models are equipped with a special "Street Mode" setting that provides a gentle airflow for sensitive applications, such as clearing dust and debris around parked cars or in pedestrian areas, ensuring a safer and more considerate experience. These blowers are equipped with a range of safety features, including a safety throttle lock and a sturdy handle design. This ensures the operator's safety and promotes secure operation. The Stihl BR 320, BR 400, SR320, and SR400 are powerful and efficient tools for clearing leaves, debris, and other materials in a variety of applications, making them a popular choice for professionals and demanding users alike.