This comprehensive service and repair manual provides detailed instructions for maintaining and repairing Stihl 070, 070AV, 090, 090AV, and 090G chainsaws. It is a complete factory-level document, offering in-depth technical information, including exploded diagrams, specifications, troubleshooting guides, and step-by-step repair procedures. This manual covers all aspects of servicing these powerful chainsaws, empowering you to perform a wide range of tasks, from routine maintenance to complex repairs. Whether you're a professional mechanic or a DIY enthusiast, this manual equips you with the knowledge and guidance to keep your Stihl chainsaw running smoothly and efficiently.

The Stihl 070, 070AV, 090, 090AV, and 090G are a series of powerful professional-grade chainsaws renowned for their exceptional performance and durability. These saws were designed for demanding applications such as timber harvesting, landscaping, and construction projects. They feature robust, high-displacement engines that deliver immense cutting power, allowing them to tackle challenging tasks with ease. The 070 and 090 models are distinguished by their high-torque engines, boasting a displacement of 79.9cc and 91.6cc, respectively. The AV variants, 070AV and 090AV, incorporate an automatic oiler system that ensures consistent lubrication of the chain, enhancing performance and extending the lifespan of the cutting tools. The 090G model differs in its design, integrating a gear-driven oil pump for even more precise oil distribution. These Stihl chainsaws are built for longevity and reliability, incorporating heavy-duty components such as forged steel crankshafts, high-quality bearings, and durable aluminum housings. They are equipped with robust air filtration systems to protect the engine from dust and debris, ensuring optimal performance even in harsh conditions. The ergonomic design of the saws includes features like comfortable hand grips, vibration dampening systems, and adjustable chain tensioners, providing the user with enhanced comfort and control during operation. While these models are no longer in production, the Stihl 070, 070AV, 090, 090AV, and 090G remain highly sought-after by professional loggers and woodworkers who value their raw power, durability, and historical significance. These saws continue to be a testament to Stihl's commitment to crafting high-quality, reliable tools that endure the test of time.