Kohler Command Pro 20.5HP CH640-3261

Electric Start With 1-7/16" Diameter, 1/4" Keyway Shaft

The Kohler Command Pro CH640-3261 is a 20.5HP, 674cc V-Twin vertical shaft engine designed for commercial, industrial, and residential applications where dependable performance is essential. This model supersedes the CH640-3202, providing the same trusted power with enhanced durability and efficiency.

Built with a 4-stroke OHV V-Twin design, the CH640-3261 delivers smooth, fuel-efficient operation with lower emissions than conventional engines. Its electric start system ensures reliable ignition in all conditions, while the dual-seal heavy-duty air filter keeps dirt and debris out of the engine for longer service intervals and reduced maintenance.

Producing 20.5 horsepower, this engine provides plenty of power for lawn mowers, sawmills, generators, utility vehicles, go-karts, and other heavy-duty equipment. A mechanical governor maintains consistent speed under varying workloads, while integrated oil coolers regulate operating temperatures, extending oil-change intervals and protecting vital engine components during prolonged use.

The CH640-3261 is built for durability, featuring large sleeve bearings that provide excellent support under heavy loads. Its pressure lubrication system ensures vital parts remain well-lubricated, reducing wear and maximizing engine life. Combined with forced-air cooling, this engine is designed to deliver long-term reliability in demanding environments.

With a 1-7/16” diameter shaft, 1/4” keyway, and a length of 4.46 inches, this model is highly compatible with a wide range of equipment. Its four-bolt mounting pattern allows for a secure and straightforward installation, whether you’re upgrading or replacing an older motor.

Backed by a 3-year commercial warranty, the Kohler Command Pro CH640-3261 is fully rebuildable with replacement parts readily available, making it a long-term solution for professionals and equipment owners alike.

At Carroll Stream Motor Company, we’ve been supplying Kohler engines since 2005. Our Michigan-based experts are available to assist with compatibility questions, technical support, and ordering guidance. With fast, free shipping and competitive pricing, we make it easy to get your equipment back in service quickly.

Order the Kohler Command Pro CH640-3261 today and power your equipment with one of Kohler’s most dependable mid-range V-Twin engines. Call 1-888-208-2088 for expert support from our dedicated team.