This manual covers the Stihl KombiSystem Basismotor 4180, designed for versatile use with compatible models KM90, KM100, KM110, and KM130. This 2-stroke gasoline engine system exemplifies Stihl's commitment to engineering quality and reliability, offering robust performance for a variety of tasks. Its modular design allows for efficient attachment changes, making it a dependable choice for demanding applications. The purpose of this comprehensive Service Repair Workshop Manual is to provide detailed guidance for all maintenance, servicing, and troubleshooting procedures. It includes step-by-step instructions, detailed photos, diagrams, and exploded views to assist owners, mechanics, and technicians in maintaining the optimal performance and longevity of their Stihl KombiSystem. The manual covers all repairs and servicing needs, ensuring the equipment operates at its best.