This service manual covers the Kohler M18 and M20 Magnum engines, designed for robust performance and reliability in various applications. These engines are engineered with precision to deliver consistent power and durability, making them a trusted choice for demanding tasks. Their advanced design incorporates high-quality components to ensure optimal operation and longevity, reflecting Kohler's commitment to excellence in power equipment.

This manual provides comprehensive guidance for the maintenance, repair, and troubleshooting of your Kohler M18 and M20 Magnum engines. It details general information, special tools, periodic maintenance schedules, and in-depth procedures for disassembly, inspection, reconditioning, and reassembly. Sections on the air cleaner, fuel system, governors, lubrication system, and electrical components are included to assist owners, technicians, and mechanics in keeping these engines in peak operating condition.