Convenience & Control

• LONG-TERM DURABILITY: A Single-Belt Drive System uses fewer moving parts and is simple in design for long-term durability. The automatic belt tensioners keep the proper belt tension, avoiding adjustments for added convenience.
• BETTER CHARGING: The High-Output Alternator produces 18 amps at 600 RPMs and 38 amps at 1000 RPMs, to help keep batteries charged while trolling, and an amazing 45 amps from 2500 RPMs up to W.O.T, for powering an array of marine electronics.
• PRECISION TROLLING: With Variable Trolling RPM, simply press a button on the Command Link® gauges to adjust the engine’s trolling speed from 600 – 1000 RPMs, in 50-RPM increments. This helps provide precise and consistent trolling speeds in a wide array of conditions.

Power & Performance

• 16 PERCENT GAIN IN TORQUE: The ECM (Engine Control Module) varies camshaft timing based on engine RPMs maximizing intake and exhaust efficiency. This optimizes combustion, increases volumetric efficiency and delivers a full 16 percent gain in torque in the 2000-3500 RPM range, where you really need it.
• POWERFUL HOLE SHOT: An Electronically Controlled Single Throttle Valve precisely controls the airflow through the surge tanks into the long tube intake tracks. The air silencer box reduces intake air noise for whisper quiet operation while the surge tank reduces air turbulence for smoother operation. The long tube intake tracks are tuned to increase airflow, which boosts low end and mid-range torque and performance resulting in a more powerful hole shot and increased acceleration.
• BETTER, MORE EFFICIENT COMBUSTION: With Precision Multi-Point Fuel Injection, six individual fuel injectors are located just above the intake valves to deliver the precise amount of fuel for each individual cylinder. The placement of the fuel injectors just above the intake valves enhances fuel atomization resulting in better and more efficient combustion, enhanced engine performance and improved fuel efficiency.
• VOLUMETRIC EFFICIENCY: Large Diameter Intake and Exhaust Valves are engineered to deliver the air and fuel more directly into the combustion chamber. This design allows additional space for the intake and exhaust valves to have an increased diameter, which greatly increases volumetric efficiency. The intake valves also have larger valve lift for increased top-end performance.
• LIGHT, COMPACT DESIGN: Another Yamaha first, In-Bank™ Exhaust System reversed the conventional four stroke configuration, allowing space for the exhaust to exit between the V-block downward for a lighter, more compact design. This design also allows the air flow volume to boost the torque in the low and midrange operation, increasing performance.
• SMART DESIGN: Inside Track Fuel Injection positions individual fuel injectors on the inward side of each intake track, saving space and keeping electrical wiring away from the cowling latches.

Reliability & Durability

• LESS MOVING PARTS: A 24-Valve Double Overhead Cam features individual intake and exhaust camshafts to provide more precise valve timing control. Less moving parts means increased reliability and less maintenance. This superior design also allows for use of four valves per cylinder, which exchanges intake and exhaust gases more efficiently for maximum power, fuel efficiency and reliability.
• ENGINEERED FOR THE WATER: The compact 60° V-block featured in each of 3.3L V6s was engineered as a marine engine in every detail, not adapted from an automotive design.
• PROTECTION FROM MOISTURE: Sure-Seal Tri-Latches seal the cowl tight, keeping out water and debris.
• EXHAUST PRESSURE REDUCTION: This system reduces exhaust pressures while cooling the hub on the propeller. This process increases horsepower output while simultaneously increasing propeller durability. Another innovative performance and reliability feature from Yamaha.