This Service & Repair Manual covers Kohler K91 series single cylinder engines, designed for preventive maintenance and repairs. These engines are known for their robust engineering and reliability, making them a trusted choice for various applications requiring dependable power. This manual provides comprehensive information to ensure these engines operate at their peak performance and longevity. The purpose of this manual is to serve as a complete resource for owners, mechanics, and technicians. It details essential maintenance procedures, troubleshooting guides, technical specifications, and safety guidelines. With included part numbers, torque specifications, and exploded views, this guide offers detailed work procedures and technical information necessary for effective servicing and repair of the covered engine models, including the K91, K141, K161, K181, K241, K301, K321, and K341.