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Tapping into a 35 year history designing outboard
engines, Yamaha Marine has introduced its newest and biggest
four-stroke outboard.
The 2000 F115 -- a fuel-injected, in-line,
four-cylinder outboard was designed from the start as a marine
engine, with more power, less noise and more efficiency. It's the
ideal motor for boaters who have larger boats and want four-stoke
power.
"The F115 is for boaters and anglers who want
power and excellent fuel economy," said David Grigsby, product
manager of Yamaha's Marine Power Division. "Our F115 was designed
specifically to be a marine engine instead of a converted automotive
engine design. That's one of the advantages that comes with owning a
Yamaha."
Yamaha engineers also paid special attention to fuel
delivery when designing the F115. Multi-port fuel injection
incorporates one injector and throttle opening per cylinder to give
improved fuel economy and optimum power and acceleration.
The F115 features dual overhead cams for greater valve
timing control and utilizes four valves per cylinder in Yamaha's
Crossfire Valve System to provide clean, powerful combustion.
A three-stage idle labyrinth exhaust chamber yields
less engine noise for a quieter boat. The design optimizes combustion
efficiency for better fuel economy and provides plenty of torque in
the low- to mid-RPM range, where most trolling is done.
Yamaha's drive design eliminates rocker arms and the
constant servicing that goes with them. Yamaha's system uses a design
that virtually connects the valve operation to the cam resulting in
fewer moving parts, less weight and maintenance, and increased
reliability.
Fuel efficiency is a major concern of many boaters.
The F115 gets the most power out of its fuel by using four valves per
cylinder -- two intake and two exhaust and decreased drive-train
mass means better fuel economy, smooth running and increased
durability.
Yamaha added an advanced intake system specifically
designed to deliver optimum power, performance and fuel economy.
For added safety while the boat is underway, the
F115's key switch features a standard engine stop switch lanyard that
conveniently clips to the operator's wrist, clothing or personal
flotation device and automatically stops the engine if the operator
accidentally leaves the helm.
Weighing in at 398 pounds, the F115 is 107 pounds
lighter than similar competitive engines. The lighter weight
translates into additional fuel savings and another Yamaha advantage -
increased performance. Like all Yamaha four-stroke outboards, the new
F115 is backed by Yamaha's three-year factory limited warranty at no
extra cost.
For more information, visit the Yamaha home page at www.yamaha-motor.com
or call 1-800-889-2624.
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