The Command PRO 21 HP, 694cc EFI Engine is a vertical-shaft engine designed for demanding commercial turf applications. Featuring Electronic Fuel Injection (EFI) technology, it delivers precise fuel metering for improved fuel efficiency, consistent power, and reliable performance. Built with an overhead valve V-twin design, cast-iron cylinder liners, and full-pressure lubrication, this engine provides exceptional durability and long service life. Its no-choke EFI starting system, heavy-duty canister air cleaner, and integrated low-oil shutdown.