Suzuki DF25ATSW4 Portable Outboard Motor. 15" Shaft Remote Mechanical Steering Manual Start Power Trim & Tilt 25 HP White. A four-stroke of genius.. The Suzuki DF25ATSW4 Portable Outboard Motor is a 25 horsepower short-shaft four-stroke built for compact boats that want remote helm control, useful trim flexibility, and a cleaner visual finish. With a 15" shaft, remote mechanical steering, and power trim and tilt, this model is a strong option for short-transom skiffs, fishing rigs, and utility h