Yamaha Motor Australia has announced the release of two new outboard motor models for small commercial vessels, the F175A and F115B.
"The F175 fills a gap in the current range of inline four-cylinder outboards," commented Yamaha, "whilst the all-new F115B will replace the existing F115A."
Responding to market demand, the F175A slots in between the F150A and the recently released four-cylinder F200, continued the company. "The mechanically controlled F175 is based on the 2.8L F200 platform, sharing the same displacement and four-cylinder, 16-valve Double Overhead Camshaft design. Like the F200, the F175A is very responsive, with a sophisticated valve train design that's been proven by millions of hours of use."
Yamaha said the F175A offers a balance between footprint reduction and performance innovation, using a single-throttle intake valve that reduces weight and increases efficiency. A knock sensor also allows the engine to run at peak efficiency and performance at high RPM, regardless of the conditions.
The F175 is compatible with Yamaha's Command Link gauges and hardware, as well as the Y-COP theft deterrent system. The outboard also includes Yamaha's Variable Trolling function when fitted with Yamaha's Command Link gauges, and the outboard model is compatible with the company's Shift Dampening System (SDS) range of propellers.
"This system utilises a splined rubber hub designed to absorb the force created when an outboard is shifted into gear. The result is smooth, virtually noise free shifting in and out of gear for greater durability and more pleasant operation," Yamaha said.
Meanwhile, Yamaha's new mechanically controlled F115B engine model is designed to be powerful yet compact, with Yamaha claiming the engine will be the lightest outboard in the four-stroke class, at 1171 kilograms. "Weight savings are derived from a variety of new materials, such as a composite cowling, a single ram power trim and tilt mechanism, and a new lightweight mounting bracket," said Yamaha.
The F115B provides increased cubic capacity, which now measures 1.8 litres. Further, the outboard's double-overhead cam four-cylinder design has a larger intake and exhaust valves for easier breathing, more power and better midrange torque.
"The compression ratio has been increased, and so has the full-throttle RPM range – now up to 6,300rpm. A knock sensor allows the engine to operate reliably at peak output. The result is great response throughout the RPM range and terrific acceleration," said Yamaha.
Like the F175, the new F115 model is mechanically controlled and compatible with Yamaha's Command Link gauges and hardware, as well as the Y-COP theft deterrent system.
The outboard also includes Yamaha's Variable Trolling function when fitted with Yamaha's Command Link gauges or Multi-function Tiller Handle.