YAMAHA 20HP With Electric start, power tilt and Fuel Injection. 
SMALL-ENGINE CONVENIENCE, BIG-ENGINE PERFORMANCE
This versatile, twin-cylinder 4-stroke combines power and responsiveness - and delivers a super-smooth ride. Outstanding fuel economy also means that you're being kinder to the environment, with exhaust emissions cut to a minimum.
Enjoy too, the many extras that only a Yamaha outboard delivers. Benefits like computer-controlled ignition, a special light-load starting system, a water-cooled fuel pump, and a large-volume silencer – all normally only found on larger engines. For commercial, professional or leisure use, it adds up to a winning formula.
Steering friction
You'll find the 20hp very easy to control and comfortable to drive, thanks to its many features - from the front-mounted shift lever and single-lever steering friction adjuster to the light-load recoil starter. A built-in handle on the steering bracket and resting pads on the rear, make for convenient handling and portability too.
PrimeStart™
Start your outboard engine as easily as starting a car – even from cold. Exclusive to Yamaha, the PrimeStart™ system ensure that the engine fires first time, every time you engage either the Electric or Manual Start.
High-output alternator
Never get left short. A High-output alternator ensures that power is always available to start the engine – even after prolonged periods of idling or when you've been running at low revs and using numerous accessories.
Engine type
4-stroke
Displacement
432 cm³
No. of cylinders/configuration
2/In-line, SOHC
Bore x stroke
65.0 mm x 65.1 mm
Prop shaft output at mid range
14.7 / 5,500 rpm
Full throttle operating range
5,000 - 6,000 rpm
Lubrication system
Wet sump
Fuel Induction System
EFI
Ignition / advance system
CDI
Starter system
Electric/ Manual, Manual (MH), Electric (E, EP)
Gear ratio
2.08 (27:13)
Recommended boat transom height
S429L:551mm
Fuel tank capacity
separate, 25litres
Oil pan capacity
1.1litres
Weight without propeller
56kg - 63kg