Kawasaki FX651V-S00 20.5HP Gas Engine

With 1 1/8" Diameter, 1/4" Keyway Shaft

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The Kawasaki FX651V-S00 is a robust 20.5HP vertical shaft engine tailored for the rigorous demands of commercial, industrial, and residential equipment. Featuring a 1-1/8" diameter shaft (4-5/16" length) and an electric start, this 726cc engine is engineered for exceptional performance, reliability, and lasting value. Whether you're upgrading an engine on a zero-turn mower or powering new industrial machinery, the FX651V-S00 is a dependable choice that consistently delivers results.

This model showcases Kawasaki's reliable 4-stroke OHV V-twin design, which provides improved fuel efficiency, cleaner combustion, and a smooth, low-vibration performance. With a displacement of 726cc, it offers consistent torque for mowing, hauling, and utility tasks—perfect for demanding commercial users.

The oil filter and high-efficiency oil cooler in the pressurized lubrication system offer essential protection during prolonged use. Paired with a robust canister air filtration system, this engine is designed to remain cleaner and operate longer in challenging or dusty conditions. The mechanical governor maintains a consistent engine speed despite changes in load, while the 15-amp charging coil powers electrical systems—ideal for lighting or additional accessories.

The FX651V-S00 features a standard bolt pattern, a 1/4" keyed shaft, and a drilled/tapped shaft end, making it simple to install and compatible with numerous commercial equipment. It serves as a direct replacement for various models and brands, such as FS651V, and is commonly found in machines from Toro, Exmark, Scag, Bad Boy, Ariens, KMC, Excel, MTD, Dixie Chopper, and others.

At 102 lbs, this model is designed for tough durability while remaining easy to handle. It comes with Kawasaki's top-notch 3-year warranty for both commercial and consumer use, ensuring your investment is secure. Additionally, the engine can be completely rebuilt, and all OEM replacement parts are conveniently available from Carroll Stream Motor Company.

Since 2005, Carroll Stream Motor Company has proudly served as a Kawasaki Gold-Level Dealer, providing high-quality small engines along with exceptional customer service. We ensure quick shipping—often on the same day—and offer free shipping for all orders exceeding $100.

Get your Kawasaki FX651V-S00 today and energize your equipment with one of the most dependable small engines available. Reach out to us at 888-208-2088 to chat with our engine specialists and find the ideal match for your needs.