| Brand |
MERCURY
|
Yamaha
|
| Model |
F50 4S
|
50HP
|
|
Power
|
50HP
|
50HP
|
|
Rated Speed
|
5500r/min
|
4500r/min
|
|
Cylinders Arrangement/Number
|
4
|
3
|
|
Displacement
|
995cm3
|
698cm3
|
|
Weight
|
112kg
|
86kg
|
|
Bore
|
65mm
|
|
|
Stroke
|
75mm
|
|
|
Cooling
|
Water-cooled w/thermostat
|
|
|
Gear Ratio
|
1.83:1
|
1.85:1
|
|
ShaftLength
|
20/508(in/mm)
|
20/508(in/mm)
|
|
Gears
|
F N R
|
|
|
Alternator
|
18-amp/223-watt
|
6A
|
|
Ignition
|
ECM 555 Digital Inductive
|
CDI
|
|
Starter
|
Electric (Turn key)
|
Electric
|
|
Exhaust
|
Through prop
|
|
|
Trim
|
Power trim
|
|
|
FuelInduction
|
2-Valve per Cylinder, Single Overhead Cam (SOHC)
|
Carb Loop Charged
|
|
Lubrication
|
Integrated Wet Sump
|
Precision Blend Oil Injection
|
|
Steering
|
Remote or tiller
|
|
|
Engine Type
|
50 HP 4-STROKE
|
50 HP 2-STROKE
|
|
Outboard
|
Outboard
|
Outboard
|
