This workshop service repair manual covers Stihl FS90, FS100, FS110, and FS130 models equipped with the Basismotor 4180 engine. These power units are engineered for demanding tasks, offering robust performance and reliability for various applications. The manual is designed to provide comprehensive information for maintaining and repairing these Stihl machines, ensuring they operate at peak efficiency. This English-language manual details every repair and service procedure from A-Z, offering easy-to-follow, step-by-step instructions with accompanying visuals. It is intended for DIY repairs and maintenance, aiming to help users save on repair costs. The manual is compatible with all PC and Mac computers, tablets, and mobile phones, requiring Adobe Reader for access, and is fully printable for convenience.