| Brand |
MERCURY
|
Honda
|
| Model |
F20 4S
|
BF20
|
|
Power
|
20HP
|
20HP
|
|
Rated Speed
|
5400r/min
|
5000r/min
|
|
Cylinders Arrangement/Number
|
2
|
2
|
|
Displacement
|
351cm3
|
350cm3
|
|
Weight
|
52kg
|
52.5kg
|
|
Bore
|
61mm
|
59mm
|
|
Stroke
|
60mm
|
64mm
|
|
Cooling
|
Water-cooled w/thermostat
|
Water Cooled
|
|
Gear Ratio
|
2.15:1
|
2.08:1
|
|
ShaftLength
|
15 or 20/381 or 508(in/mm)
|
15 or 20/381 or 508(in/mm)
|
|
Gears
|
F N R
|
F N R
|
|
Alternator
|
12V/11 amp
|
Electric 12 Amps (148 Watts) Manual 6 Amps (76 Watts)
|
|
Ignition
|
CDI w/electric spark advance
|
Programmed Ignition System
|
|
Starter
|
Manual or electric
|
Manual/Electric
|
|
Exhaust
|
Through prop
|
Through prop
|
|
Trim
|
6 or power tilt
|
4 stages
|
|
FuelInduction
|
2-valve single overhead cam
|
Single Venturi
|
|
Lubrication
|
Wet sump
|
Wet Sump
|
|
Steering
|
Remote or tiller
|
Remote or tiller
|
|
Engine Type
|
20 HP 4-STROKE
|
20 HP 4-STROKE
|
|
Outboard
|
Outboard
|
Outboard
|
