| F225
Sport Exclusive Features & Benefits |
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Variable Camshaft Timing on the new
F225. 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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Electronically-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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Electronic Multi-Point Fuel Injection
- 6 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. |
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24-valve Double Overhead Camshaft uses
individual intake and exhaust camshafts to provide more precise valve
timing control. This system has less moving parts than conventional push
rod systems for increased reliability, less maintenance, and weight savings.
This superior design also allows for use of 4 valves per cylinder which
exchange intake and exhaust gases more efficiently for responsive power
and increased fuel economy. |
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Large 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
diameter which greatly increases volumetric efficiency. The intake valves
also have larger valve lift for increased top end performance. |
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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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Yamaha's Award-Winning Innovation continues
to revolutionize four stroke technology. |
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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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High Output Alternator produces
38 amps at 1000 rpms helping keep batteries charged, and an amazing 46
amps from 2500 rpms to W.O.T. for today's use of an array of marine electronics. |
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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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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.
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Yamaha's Exclusive ACP-221 Paint Process
provides a tough, 5-layer barrier against corrosion. It’s a key
part of our renowned Ultimate Corrosion Protection System that’s
standard on the F225 Sport Model. |
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Yamaha Four Strokes blend fuel economy with power
and performance from 2.5 hp all the way to the F350 V8.
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Every Yamaha Four Stroke
is protected by our 3-Year Limited Warranty for pleasure use. |
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Yamaha's Four Strokes meet
all Federal EPA emission requirements. Our entire four stroke line-up
(except the F4 and F2.5) has earned a California C.A.R.B. three-star rating
for ultra-low emissions. Our F4 and F2.5 models have earned a two-star
rating for very low emissions. |
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Extended Trim range delivers
better acceleration to plane and top end speed. The tilt range extends
to a full 70°. |
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Freshwater Flush Device allows you
to flush the engine without running it, for added convenience and long-engine
life. |
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Yamaha is dedicated to helping create
a cleaner environment through advances in outboard technology. |
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