This Service Repair Manual covers the Kohler K-Series Engines, including models K91, K141, K161, K181, K241, K301, K321, and K341. These single-cylinder, 4-cycle, air-cooled gasoline engines are known for their robust engineering and reliability, offering power outputs ranging from 3.0 to 10.0 horsepower across their various displacements. Designed for a wide range of applications, the K-Series engines are built to perform consistently and endure demanding operational environments. This manual provides comprehensive guidance for the maintenance, repair, and troubleshooting of your Kohler K-Series engine. It details essential procedures, including safety precautions, the use of special tools, periodic maintenance schedules, and in-depth explanations of the fuel, electrical, and starting systems. With detailed disassembly, inspection, and reassembly instructions, along with included wiring diagrams, this manual is an indispensable resource for owners, mechanics, and technicians to ensure optimal performance and longevity of their engines.