NEW YAMAHA FOUR-STROKE OUTBOARDS
Yamaha has announced two new models in Australia: the new F175A and F115B. According to Yamaha, the new F175 fills a gap in the current range of inline four-cylinder outboards, while the F115B will replace the Yamaha F115A
YAMAHA F175
Yamaha says the F175 is based on the award-winning 2.8lt F200 platform, sharing the same displacement and four-cylinder, 16-valve double-overhead-camshaft design. It uses a single-throttle intake valve that is said to reduces weight while increasing efficiency, and a knock sensor allows the engine to run at peak efficiency and performance at a high rev rate regardless of conditions.
The engine has a 50amp electrical output to keep up with today’s electronic accessories. It is also compatible with the Yamaha 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.
The F175 is compatible with Yamaha’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 F175 is mechanically controlled for ease of use in both new boat and repower applications.
YAMAHA F115B
Yamaha says the new F115B, at 171kg, is 15kg lighter than the previous generation F115A; Yamaha also says it is 11kg lighter than the nearest four-stroke competitor. 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.
The F115B has increased cubic capacity, which now measures 1.8 litres. The outboard’s Double-Overhead Cam (DOHC) four-cylinder design now has larger intake and exhaust valves for easier breathing, more power and better mid-range 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. Yamaha says the result is great response throughout the RPM range and terrific acceleration.
The new Yamaha F115 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.
Yamaha added that the new F175A outboard will be available from April 2014; the new Yamaha F115B outboard will be available from the beginning of May.
Visit www.yamaha-motor.com.au for more information.
YAMAHA OUTBOARD SPECIFICATIONS
YAMAHA F115B | YAMAHA F175A | |
Model name | F115LB, F115XB, LF115XB | F175LA, F175XA |
Shaft length | L, X | L, X |
Dry weight | L: 171kg, X: 176kg (dry, no prop weight) | L: 219kg, X: 220kg (dry, no prop weight) |
Engine type | Four-Stroke, 16-Valve, DOHC, In-line 4 | Four-Stroke, 16-Valve, DOHC, In-line 4 |
Displacement | 1832cc | 2785cc |
Bore × stroke | 81.0 × 88.9 | 96 x 96.2 |
Compression ratio | 10:1 | 10.3:1 |
Full throttle operating range | 5300-6300rpm | 5000-6000rpm |
Fuel induction system | Electronic fuel injection | Electronic fuel injection |
Engine oil capacity | 3.2 L/3.0 L *with/without oil filter exchange | 4.5 L/4.3 L *with/without oil filter exchange |
Ignition system | TCI Microcomputer | TCI Microcomputer |
Alternator | 35 Amp (Battery charge: 28 Amp) | 50 Amp (Battery charge: 42 Amp) |
Cooling system | Raw-water, thermostatically controlled | Raw-water, thermostatically controlled |
Exhaust system | Through propeller hub | Through propeller hub |
Emission rating | 3 Star Ultra Low Emission | 3 Star Ultra Low Emission |
Recommended fuel | Regular unleaded | Regular unleaded |
Warranty | 4 Years Recreational (conditional) | 4 Years Recreational (conditional) |