This workshop service and repair manual covers Kohler single cylinder engines, specifically models K91, K141, K161, K181, K241, K301, K321, and K341. These engines are known for their robust engineering and reliability, designed for various vehicle maintenance and repair applications. This manual provides comprehensive information to ensure these engines perform optimally and are maintained to the highest standards. The purpose of this manual is to serve as an authoritative guide for owners, mechanics, and technicians. It details general information, special tools, periodic maintenance, and troubleshooting procedures. Coverage extends to critical engine components including the air cleaner and intake system, fuel system and governor, starters, electrical systems, automatic compression release, and detailed disassembly, inspection, repair, and reassembly processes, all presented with step-by-step instructions and exploded diagrams for clarity and ease of use.