Suzuki DF6AS4 Portable Outboard Motor. 15" Shaft Tiller Handle Manual Start Manual Tilt 6 HP Black. None Of The Dead Weight, All Of The Torgue. The Suzuki DF6AS4 Portable Outboard Motor steps up from ultra-small tender horsepower and gives boaters a little more push without giving up portability. With a 15" shaft, tiller handle, and compact four-stroke design, it is a solid fit for jon boats, inflatables, dinghies, and lightweight fishing boats where a 2.5 or 4 horsepower motor may feel underpow