The Kohler AEGIS LH690 is a robust V-twin, 4-stroke, air-cooled gasoline engine with a displacement of 690 cc, designed for industrial and commercial applications. Engineered for reliability and continuous operation under varying load conditions, this engine utilizes an electronic ignition system and a carburetor for fuel delivery. Its forced air cooling system, dual element paper air filter, and cast iron exhaust manifold contribute to its durable performance. The AEGIS LH690 is built to meet the demanding requirements of professional use, offering dependable power for a wide range of equipment.

This Service Workshop Manual provides comprehensive guidance for the Kohler AEGIS LH690 engine. It covers essential maintenance procedures, including recommended oil types and capacities, as well as service intervals for spark plugs, oil changes, and air filter replacement. Technical specifications detail the engine's various systems, from ignition and fuel to cooling and air intake. Safety guidelines and troubleshooting information are also included to assist owners, mechanics, and technicians in effectively maintaining and repairing the engine, ensuring its optimal performance and longevity.