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Compact and lightweight, our in-line four-cylinder design is quiet, clean-burning and fuel efficient, with power to spare.
A 16-Valve Double Overhead Cam with individual intake and exhaust camshafts provides more precise valve timing control and has less moving parts for less maintenance. This superior design also allows for use of four compact valves per cylinder, which exchanges intake and exhaust gases more efficiently for better power and increased fuel economy.
Multi-Point Electronic Fuel Injection is controlled by the ECM (Engine Control Module). Four individual fuel injectors provide the precise amount of fuel for each individual cylinder. Optimal fuel atomization provides better combustion, further enhancing performance and fuel economy.
A 10mm Offset Crankshaft allows for larger intake volume design. Four tuned intake tubes boost torque in low and mid-speed ranges for quick acceleration.
The Composite Intake Manifold is a lightweight, compact design, making these engines very versatile. Long Tube Intake Tracks are tuned to increase airflow, boosting low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smoother operation.
Microcomputer Ignition adjusts timing to maintain optimum engine performance, economy and power under all operating conditions.
All Yamaha In-Line Four strokes are California Air Resources Board (C.A.R.B.) Three-Star Rated for Ultra-Low Emissions and meet all federal EPA requirements.
All Yamaha four strokes are protected by our Three-Year Limited Warranty for pleasure use. Beyond that, Yamaha Extended Service (Y.E.S.) plans are available, for continued coverage after your three-year factory warranty expires.
Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha inline four stroke engines.
Our exclusive YDC-30 Alloy is the most corrosion-resistant base material in the industry. Used with our exclusive Phaze Five™ electro-deposited, anti-corrosive paint process provides an extra-tough barrier against corrosion. This protection is standard on all Yamaha inline four strokes.
Unique Twin counter-balancing technology counteracts vibration normally associated with internal moving parts for smooth operation and a pleasant boating experience.
Yamaha’s award-winning, Multi-Function Tiller Handle (optional only on the F115) features Variable Trolling Speed (VTS™), allowing you to fine-tune your trolling speed in 50-RPM increments with the touch of a button. Power Trim and Tilt is positioned next to the twist grip for easy, ergonomic control.
Yamaha’s In-Line Four strokes blend fuel economy with power and performance.
Extended Trim Range delivers better acceleration-to-plane and top-end speed. The tilt range is a full 70° for tilting the engine above the waterline.
A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.