Midrange Four Stroke Series

Midrange Four Stroke Series

	Multi-Port Precision Electronic Fuel Injection in-line 4-cylinder design is quiet, clean-burning and fuel efficient – with power to spare.
	Single throttle valve - simple, lightweight design allowing for quick and easy adjustment. The air silencer box on the F75 and F90 reduces intake air noise to a minimum with the use of a highly porous nylon cloth that soaks up the noise making these engines whisper quiet while the surge tank reduces air turbulence for smoother operation.
	Composite Intake Manifold - The long tube intake tracks are tuned to increase air flow increasing low end and midrange torque performance resulting in a more powerful hole shot and increased acceleration. The air silencer box reduces intake air noise while the surge tank reduces air turbulence for smoother operation.
	The New, Multi-Function Tiller Handle, optional on F115, puts easy control at your fingertips in a sleek, ergonomic new design.
	The High Output Alternator keeps your batteries charging even when you’re running multiple electronics.
	Top-Mounted Flywheel helps protect sensitive electrical components from harmful corrosion.
	The Microcomputer Ignition adjusts timing to maintain optimum engine performance, economy and power under all conditions.
	Single Overhead Cam on F40 - F60 models provides a compact, lightweight, space-saving design that won the "Motor Boat and Sailing" award for innovation!
	Double Overhead Cam Design on F75 and F90 models features four valves per cylinder. Valves are activated through direct contact with the camshaft, for more precise valve timing control. Rocker arms and their adjustment are eliminated for increased reliability and less maintenance.
	Yamaha's Variable Trolling Speed, available on F50 to F90 models, gives you amazing trolling control. Fine tune your most effective engine trolling speed in 50-rpm increments (between 620-900 rpm’s on the F50 and F60, and 550-1000 rpm’s on the F75 and F90), and lock it in with the touch of a button. A Yamaha exclusive!
	Every Yamaha Four Stroke is protected by our 3-Year Limited Warranty for pleasure use.
	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.
	Freshwater Flush Device allows you to flush the engine without running it, for added convenience and long-engine life.
	Yamaha's Exclusive YDC-30 Alloy is the most corrosion-resistant base material in the industry. Used with Yamaha's Exclusive ACP-221 Paint Process, it provides a extra-tough barrier against corrosion. They’re both key components of our renowned Ultimate Corrosion Protection System that’s standard on all Yamaha Midrange Four Stroke engines.
	Yamaha is dedicated to helping create a cleaner environment through advances in outboard technology.