Description
Key features
Maximum overall performance: microcomputer ignition adjusts timing to maintain optimum engine performance, economy and power under all conditions. (f8 and up)
Ultra-low emissions: yamaha jet drive four strokes are california air resources board (c.a.r.b.) three-star rated for ultra-low emissions and meet all federal epa requirements. When you need to get to where a prop won’t take you, get an f90 jet drive. This 65hp engine is a marine-inspired 4-stroke that’s as much as 50% quieter than a conventional 2-stroke, and up to 30% more fuel efficient, too. When you need to explore the shallow stuff, the f60 jet drive (40hp) is the perfect midrange outboard. It’s power-packed, compact, quiet, lightweight, and efficient – as much as 30% more fuel-efficient than a conventional 2-stroke.
Engine
Engine type: Four stroke, in-line 3-cylinder
Displacement: 747 cc
Bore & stroke: 65 x 75mm (2.56 x 2.95in)
Rpm range: 5000-6000
Compression ratio: 9.4:1
Induction system: Sohc / 6 – valve
Alternator output: 16 amps
Fuel delivery: Multi-point electronic fuel injection
Starting: Electric
Ignition: Tci microcomputer
Lubrication: Wet sump
Degree of trim/tilt: -3° through +20°/63° w/ptt (62° w/hydro-assit manual tilt)
Exhaust: Through propeller. Water-cooled, labyrinth
Cooling: Raw water, thermostatic control
Gear shift: F/n/r
Gear ratio: Direct drive
Fuel & lubrication
Recommended fuel: Unleaded gasoline (minimum pump octane 87)
Recommended oil: Yamalube 4-m fc-w 10w-30 or 20w-40
Oil capacity: 2l
Dimensions
Shaft length: Fit 20″ transom
Dry weight: 99 kg (219 lbs)
