This comprehensive service and repair manual provides detailed instructions for maintaining and repairing Stihl HS 75, HS 80, HS 85, and BG 75 hedge trimmers. It is designed for use by both novice and professional technicians, offering clear and concise explanations of every procedure. The manual covers a wide range of topics, including: * **Introduction:** A general overview of the hedge trimmers and their features. * **Specifications:** Detailed technical specifications for each model, including engine size, weight, and operating parameters. * **Clutch, Chain Drive, Chain Brake, and Chain Tensioner:** Step-by-step instructions for disassembling, inspecting, adjusting, and reassembling these critical components. * **Engine:** Comprehensive guidance on engine troubleshooting, repair, and maintenance, covering topics such as cylinder head removal, piston replacement, and carburetor adjustment. * **Ignition System:** Detailed instructions for diagnosing and repairing ignition problems, including spark plug replacement, magneto inspection, and wiring diagrams. * **Rewind Starter:** Clear explanations of how to disassemble, clean, and reassemble the rewind starter mechanism. * **AV Handle System:** Detailed instructions for servicing and adjusting the AV handle system, ensuring optimal operator comfort and control. * **Master Control / Handle System:** Step-by-step guidance on troubleshooting and repairing the master control and handle system, including throttle cable adjustments and switch replacement. * **Chain Lubrication:** Explanations of the chain lubrication system and how to ensure proper lubrication for optimal performance. * **Fuel System:** Detailed instructions for servicing and repairing the fuel system, covering topics such as fuel tank cleaning, carburetor rebuild, and fuel line replacement. * **Special Servicing Tools and Aids:** A list of specialized tools and aids recommended for servicing these models. Utilize this manual as a valuable tool for preventative maintenance and efficient troubleshooting, helping to extend the life of your Stihl hedge trimmer and minimize downtime.

The Stihl HS 75, HS 80, HS 85, and BG 75 hedge trimmers are powerful and versatile tools designed for tackling a wide range of landscaping tasks. These machines are known for their robust construction, reliable operation, and user-friendly features. The HS series boasts a range of cutting widths, with the HS 75 offering a 22-inch blade, the HS 80 featuring a 24-inch blade, and the HS 85 boasting a powerful 26-inch cutting capacity. The Stihl BG 75, on the other hand, is a gas-powered hedge trimmer that provides a compact and lightweight option for smaller trimming jobs. This model comes equipped with a 17-inch cutting blade for precise maneuvering in tight spaces. All Stihl HS and BG 75 hedge trimmers share common design elements, including robust gearing systems for smooth performance, ergonomically designed handles for comfortable operation, and efficient cooling systems to prevent overheating. The machines are powered by reliable two-stroke engines that deliver ample power for tackling even the toughest vegetation. The HS series models are equipped with a unique "Easy Start" system, which makes starting the engine quick and effortless. In addition to their performance capabilities, these hedge trimmers are built for durability and longevity. The robust construction ensures that they can withstand the rigors of heavy-duty use, while the high-quality components ensure years of reliable service. With their combination of power, performance, and durability, Stihl HS and BG 75 hedge trimmers are ideal choices for professional landscapers and demanding homeowners alike.