Yamaha F20B HP Outboard Engines - RRP from £2,299

Small engine convenience. Big-engine performance

This sleek, stylish twin-cylinder 4-stroke outboard engine is a class leader.

Yamaha F20B horse power outboard engine Interested in buying a Yamaha outboard engines?
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This outbaord engine is easy to handle and control. It provides strong performance, smoothness, fuel economy, reduced exhaust emissions, and amazing versatility. Add in some features normally only found on larger engines, such as computer-controlled ignition, special light-load starting system, water-cooled fuel pump and large-volume silencer, to see why it is the perfect choice for commercial, professional or leisure use.

Yamaha F20B hp four stroke outboard engine features:

  • Primestart - chokeless system - easy as starting your car
  • Labyrinth exhaust system - Quiter running speeds
  • Fresh water flushing system - reduces corrosion and extends engine life
  • Shallow water drive
  • Manual and electric start options

This engine has a 362cc capacity powerhead, which offers excellent torque to punch a boat up onto the plane, combined with very low engine noise and great fuel economy. On the tiller control models, not only is the gear lever mounted at the front of the engine maximum for operator convenience and comfort, but a quick adjust steering friction lever is also mounted at the front. A 10 amp alternator is standard on all models, as is Yamaha’s almost legendary reliability. Choose between a standard and long shaft model with hand start, tiller control, or electric start, remote control. Also available are some remote control, electric start models which even have power tilt, enabling the operator to tilt the engine at the press of a button

Yamaha outboard engines technical specifications

F20B hp Yamaha Outboard EngineF20B hp Yamaha Outboard Engine


Yamaha Outboard Engines Technical Specifications

Yamaha Outboards Specifications F20B F25 F30
RRP from: £2,229 £2,449 £3,399
Engine type 4-Stroke 4-Stroke 4-Stroke
Number of cyclinders / Configuration 2/In-line 2/with balancer 3/In-line
Bore x Stroke
(mm)
63 x 58.1 65 x 75 65 x 75
Displacement
(cm3)
362 498 747
Full throttle range
(rpm)
5000-6000 5000-6000 4500-5500
Prop shaft output at mid range
(kW/rpm)
14.7/5500 18.4/5500 22.1/5500
Weight with propeller (kg)
Weight without propeller (kg)*
F20BMHS: 51.7
F20BMHL: 53.7
F20BES: 52.7
F20BEL: 54.7
F20BEPS: 58.7
F20BEPL: 60.7
F25AMHS: 62.0
F25AMHL: 64.0
F25AES: 65.0
F25AEL: 67.0
F25AETL: 71.0
F30AMHDS: 83.8
F30AMHDL: 88.1
F30AETS: 86.1
F30AETL: 90.4
Recommended boat transom height
(mm)
S: 381
L: 508
S: 381
L: 508
S: 381
L: 508
Carburettors 1 1 3
Electronic fuel injection - - -
Fuel tank capacity Seprate, 25 Seprate, 25 Seprate, 25
Oil pan capacity
(litres)
1.6 1.7 2
Lubrication Wet-sump Wet-sump Wet-sump
Ignition / Advance system CDI/Computer CDI/Computer CDI/Computer
Lighting coil / alternator 12V - 10A 12V - 6A (AM)
12V - 15A (AE, AET)
12V - 6A (AM)
12V - 15A (AE)
Gear ratio 13:27 13:27 13:26
Starter system Manual (AM)
Electric (BE)
Manual (AM)
Electric (AE, AET)
Manual (AM)
Electric (AE)
Steering Tiller (BM)
Remote control (BE)
Tiller (AM)
Remote control (AE, AET)
Tiller (AM)
Remote control (AE)
Throttle and shift controls Twist grip (BM)
F-N-R/front shift (BM)
Single lever remote control (BE)
Twist grip (AM)
F-N-R/front shift (AM)
Single lever remote control (AE, AET)
Twist grip (AM)
F-N-R/front shift (AM)
Single lever remote control (BE)
Trim & tilt method
(Trim angle)
Manual (BM)
(0°,4°,8°,12°)
Power Tilt (BE)
Manual (AM, AE)
(8°,12°,16°,20°,24°)
Power Trim and Tilt (AET)
Power Trim and Tilt (AET)
Hydro tilt assist (AMHD)
Number of Propeller options
Size range (ins)
8
6½ - 12
9
8 - 14
19
9 - 17

* The kW data is based on the ICOMIA 28 standard, measured at the prop shaft