This workshop service repair manual covers the Stihl HL100, HT100, HT130, and HT101 models, featuring the Basismotor 4180 generation. These gasoline-powered, air-cooled, 2-stroke units are designed for demanding tasks, offering robust performance through their electronic ignition and integrated gear reduction systems. Engineered for reliability and efficiency, these tools are ideal for a wide range of professional and demanding homeowner applications, ensuring durability and consistent operation. This comprehensive English-language manual provides step-by-step instructions with accompanying images for all repair and service procedures, covering everything from routine maintenance like spark plug checks and air filter cleaning to more involved tasks. It serves as an essential resource for owners and technicians alike, enabling efficient troubleshooting, accurate repairs, and proper upkeep to maximize the longevity and performance of your Stihl equipment. The manual is designed for easy navigation and can be printed as needed.