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Benefits

Compact, efficient design

Smart Design

Compact and lightweight, our in-line four-cylinder design is quiet, clean-burning and fuel efficient, with power to spare.

Precise valve timing control

Power & Efficiency

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

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.

High volume intake tubes

Acceleration

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.

Composite Intake Manifold

Powerful Hole Shot

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

Optimum Overall Performance

Microcomputer Ignition adjusts timing to maintain optimum engine performance, economy and power under all operating conditions.

C.A.R.B. Three-Star Rated

Ultra-Low Emissions

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.

Benefits

Five-layer corrosion barrier

Corrosion Resistance

Our exclusive ACP-221 Paint Process provides a tough, five-layer barrier against corrosion. It’s a key part of our renowned Ultimate Corrosion Protection System that’s standard on all Yamaha Inline four stroke engines.

Four Stroke Three-Year Warranty

Warranty Protection

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.

Corrosion-resistant alloy

Anti-Corrosive Barrier

Our exclusive YDC-30 Alloy is the most corrosion-resistant base material in the industry. Used with our proprietary ACP-221 Paint Process, it provides an extra-tough barrier against corrosion. These measures are both key components of our renowned Ultimate Corrosion Protection System, which is standard on all Yamaha inline four strokes.

Benefits

Minimized vibration for smooth performance

Smooth Operation

Unique Twin Counter Balancer Shafts counteract vibration normally associated with internal moving parts for smooth operation and a pleasant boating experience.

Improved fuel economy

Fewer Fill-ups

Yamaha’s In-Line Four strokes blend fuel economy with power and performance.

Four Stroke 3-year Warranty

Warranty Protection

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.

70-degree tilt range

Extended Trim

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.

Flush engine without running it

Easy Engine Flushing

A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.