This manual covers the Kohler K91, K141, K161, K181, K241, K301, K321, and K341 series single-cylinder, air-cooled engines. These engines are known for their robust construction and reliable performance, making them suitable for a wide range of applications. The displacement, horsepower, bore and stroke, and other specifications vary across these models, offering versatility for different power requirements. This comprehensive Factory Service/Repair/Workshop Manual provides detailed information essential for the maintenance and repair of your Kohler engine. It includes step-by-step repair procedures, troubleshooting guides, and information on scheduled maintenance, oil capacity, and air cleaner systems. With exploded diagrams and clear instructions, this manual is an invaluable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their engines.