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F250 Exclusive Features & Benefits
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Variable Camshaft Timing on the
new F250. The ECM (Engine Control Module) varies camshaft timing based
on engine rpms, maximizing intake and exhaust efficiency. The result?
Optimal combustion, greater volumetric efficiency - and a full 16% gain
in torque in the 2000-3500 rpm range, where you really need it. |
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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. |
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Electronic Controlled Single
Throttle Valve precisely controls the air flow through the
surge tanks in to the long tube intake tracks. The air silencer box
reduces intake air noise for whisper quiet operation. The long tube
intake tracks are tuned to increase air flow which boosts low end and
midrange torque and performance. |
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Multi-Port Fuel Injection 6
independent fuel injectors provide the precise amount of fuel for each
individual cylinder. Optimal fuel atomization provides better
combustion, further enhancing performance and fuel economy.. |
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Exhaust Pressure Reduction System
reduces exhaust pressures while cooling the hub on the propeller. This
process increases hp output while simultaneously increasing propeller
durability. Another Yamaha innovative performance and reliability
feature. |
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Large Radius Diameter Intake and
Exhaust valves The intake tracks 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
radius which greatly increases volumetric efficiency. The intake valves
also have larger valve lift for increase top end performance. |
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High Output Alternator produces
18 amps at 600 rpms keeping batteries charged while trolling and an
amazing 45 amps from 2500 rpms to W.O.T. for today's use of an array of
marine electronics. |
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F225/F200 Exclusive
Features & Benefits
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In-Bank Exhaust - Another Yamaha first. We
reversed the conventional four stroke configuration, allowing space for
the exhaust to exit between the V-block downward for a more compact
design. |
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Long Tube Intake Tracks are precision-tuned
to maximize air velocity, delivering added low-end and midrange torque. |
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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. |
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The 24-Valve Double Overhead Cam uses 4
valves per cylinder for maximum power, fuel efficiency, and reliability. |
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Sure-Seal Tri-Latches seal the cowl tight
against water and debris. |
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Compact 60° V6 Cylinder Block was conceived
as a marine engine
in every detail, not adapted from an automotive design. |
Common High Power
Features & Benefits
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Yamaha's Award-Winning Innovation continues
to revolutionize four stroke technology. |
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Yamaha's Celebrated ACP-221 Paint Process
provides a tough, 5-layer barrier against corrosion. |
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Yamaha Four Strokes blend fuel economy with
power and performance from 2.5 hp all the way to the 250 V6.
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Every Yamaha Four Stroke is
protected by our 3-Year Limited Warranty. |
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Yamaha's Four Strokes Exceed
Federal EPA 2006 emission requirements and the F50 - F250 have earned a
California C.A.R.B. three-star rating for ultra-low emissions, or a
two-star for very low emissions. |
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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. |
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Freshwater Flush Device enables
you to flush the engine, while running or not, for added convenience. |
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Yamaha is Dedicated to Helping
create a cleaner environment through advances in outboard technology. |
