Suzuki DF20AS4 Portable Outboard Motor. 15" Shaft Tiller Handle Manual Start Manual Tilt 20 HP Pearl Nebular Black. Light on weight. Light on compromise.. The Suzuki DF20AS4 Portable Outboard Motor is a practical 20 horsepower four-stroke designed for small boats that want more serious performance while keeping the rig simple. With a 15" shaft, tiller handle steering, and portable-friendly layout, this model is a dependable choice for jon boats, skiffs, aluminum fishing boats, and utility craft