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Yamaha 115 / 90 / 75 HP
The Yamaha 115 hp and the all-new 90 hp and 75 hp Midrange four strokes are reliable inshore performers. Fast and powerful, they sport 1.8-liter displacement and DOHC or SOHC designs with four valves per cylinder. This gives them exceptional volumetric efficiency and lighter weights.
Make an appointment with Tom Ross to come in and see this motor in person.
Power and Efficiency
Precision Multi-Point Electronic Fuel Injection delivers the exact amount of fuel needed for optimum performance and efficiency. Yamaha’s EFI optimizes fuel atomization further enhancing fuel economy.
Powerful Hole Shot
The Composite Intake Manifold on the F115, F90 and F75 feature long tube intake tracks, tuned to increase airflow, which boost 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 smooth, quiet operation.
A TCI microcomputer ignition adjusts timing to maintain optimal engine performance, economy and power under all operating conditions.
Lightweight, Compact Design
To keep weight down and efficiency up, the F115 has a double overhead camshaft, and the F90 and F75 feature a single overhead camshaft, but still deploy four valves per cylinder. That setup means less mass in the cylinder head and reduced weight for the overall outboard. At the same time, four valves per cylinder means great engine combustion, which contributes to horsepower, torque and fuel efficiency.
The F90 and F75 have stepped up to 1.8-liter displacement, joining their F115 big bro. Meanwhile the 90 hp and 75 hp have both dropped 13 pounds. Lighter weight and increased volumetric efficiency, plus increased displacement equals thrilling performance and make our 90 hp a top performer in acceleration and torque.
|Bore x Stroke
|81 x 88.9mm |3.19 x 3.5in
|Prop Shaft Horsepower
|115hp at 5500 rpm, 90hp @ 5500 rpm, 75hp at 5500 rpm
|Full Throttle RPM Range
|5300 ~ 6300
|Alternator Output at W.O.T.
|Fuel Induction System
|171 kg (377 lbs) - 175 kg (386 lbs)
|Recommended Engine Oil
|Yamalube® 4M / (See owner's manual)
|Recommended Fuel Filtration
|Yamaha 10-Micron Fuel / Water Separating Filter (external)