This Service Repair Manual covers Kohler engines, specifically the K91, K141, K161, K181, K241, K301, K321, and K341 series. These single-cylinder, air-cooled, 4-stroke engines are known for their robust design and reliability, making them suitable for a wide range of applications including lawn tractors, garden tractors, generators, pumps, and snow blowers. Each engine in this series offers varying displacements and horsepower ratings, from the K91 at 3.0 HP to the K341 at 7.0 HP, providing versatile power solutions for diverse equipment needs. This comprehensive manual provides essential information for the maintenance and repair of your Kohler engine. It details critical procedures, technical specifications, and troubleshooting guidance to ensure optimal performance and longevity. Coverage includes lubrication requirements, recommended maintenance intervals for oil changes, air filter cleaning, and spark plug replacement, all tailored to keep your equipment running efficiently. Whether you are an owner performing routine upkeep or a technician undertaking more complex repairs, this manual serves as an indispensable resource for understanding and servicing these dependable engines.