Quiet Efficient Power For big engine performance, delivered in a small engine package, you can’t go past Yamaha’s F15 outboard. This two-cylinder, 362cc, four-stroke outboard is extremely fuel efficient, while producing a powerful and smooth-riding all-round performance. This engine includes Yamaha’s PrimeStartTM, which delivers quick and efficient starting in all climatic conditions. While the manual start models include an Auto Decompression feature which makes pull starting easier. Other features include a Shallow Water Drive System which allows safe operation in shallow waters and a high out-put alternator to ensure adequate power supply to run all your electronics.