Characteristics
Category:
Motors
Country of origin:
Japan
Engine leg length, mm:
435
Manufacturer:
Yamaha
Model:
F4BMHS
Type:
four-stroke
Weight, kg:
27
Number of cylinders:
1
Working volume, cm3:
139
Stroke diameter of piston, mm:
62 x 46
Compression ratio:
8.9
Maximum operating range, rpm:
4000~5000
Idle speed, rpm:
1500±50
Fuel consumption, l/h:
1.7 # 4500 rpm
Fuel injection system:
Carburetor(1)
Cooling system:
Water cooling with thermostat
Lubrication system:
Wet sump
Engine oil capacity, l:
0.600
Engine power, hp:
4
Recommended engine oil:
Yamalube 4S
Built-in fuel tank, l:
1.1
Ignition system:
Capacitive CDI microcomputer
Spark plug:
CR6HSB
Gas distribution system:
OHV
Generator:
12B-6A (optional)
Gear ratio:
2.08 (27/13)
Transmissions:
FNR
Outboard motor turning angle:
90
Outboard Motor Trim Angle:
5 positions (4, 8, 12, 16, 20)
Warranty, personal use:
3 years
Engine lifting mechanism:
Manual
Outboard motor lift angle:
69
Warranty, commercial use:
6 months
Engine start:
Manual
Steering type:
Manual (tiller)
Rowing wing, propeller pitch:
7"