| Brand |
MERCURY
|
Yamaha
|
| Model |
F4 4S
|
F4A
|
|
Power
|
4HP
|
4HP
|
|
Rated Speed
|
4500r/min
|
4000r/min
|
|
Cylinders Arrangement/Number
|
1
|
1
|
|
Displacement
|
123cm3
|
112cm3
|
|
Weight
|
25kg
|
22kg
|
|
Bore
|
59mm
|
59mm
|
|
Stroke
|
45mm
|
41mm
|
|
Cooling
|
Water-cooled w/thermostat
|
|
|
Gear Ratio
|
2.15:1
|
2.08:1
|
|
ShaftLength
|
15 or 20/381 or 508(in/mm)
|
(in/mm)
|
|
Gears
|
F N R
|
F N R
|
|
Alternator
|
4-amp (50-watt) lighting/2-amp (25-watt) charging (optional)
|
|
|
Ignition
|
CDI
|
TCI
|
|
Starter
|
Manual
|
Manual
|
|
Exhaust
|
Through prop
|
|
|
Trim
|
6 positions
|
Manual (4, 8, 12, 16 and 20 degrees)
|
|
FuelInduction
|
2-valve pushrod
|
1 carb.
|
|
Lubrication
|
Pressurized wet sump
|
Splash
|
|
Steering
|
Tiller
|
|
|
Engine Type
|
4 HP 4-STROKE
|
4 HP 4-STROKE
|
|
Outboard
|
Outboard
|
Outboard
|
