This service repair manual covers Kohler K91, K141, K161, K181, K241, K301, K321, and K341 single cylinder engines. These air-cooled, 4-stroke engines feature magneto ignition, carburetor fuel systems, and mechanical governors, with some models offering electric start. Their robust engineering ensures reliability across various applications where dependable power is essential. This manual provides comprehensive guidance for maintaining and repairing these Kohler engines. It includes detailed information on general procedures, special tools, periodic maintenance schedules, and troubleshooting common issues. Topics covered span the entire engine system, from the air intake and fuel systems to the electrical components and automatic compression release. Expertly written in English, this manual is an indispensable resource for owners and technicians alike.