Model Data; Dimension And Weight; Performance; Power Unit - Yamaha F4B Service Manual

SPEC

Model data

Dimension and weight

Item
Overall length
Overall width
Overall height
S
L
Boat transom height
S
L
Weight (with propeller)
S
L

Performance

Item
Maximum output
At 5000 r/min
At 5500 r/min
Full throttle operating range
Engine idle speed

Power unit

Item
Type
Cylinder quantity
Total displacement
Bore  stroke
Compression ratio
Control system
Starting system
Fuel system
Ignition control system
Advance type
Starting enrichment
Spark plug
Cooling system
Exhaust system
Lubrication system
1-3
Specification
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
Unit
kW (HP)
kW (HP)
r/min
r/min
Unit
cm³ (cu. in)
mm (in)
Model
F4BMH F5AMH
750.0 (29.5)
403.0 (15.9)
1040.0 (40.9)
1168.0 (46.0)
440.0 (17.3)
568.0 (22.4)
27.0 (59.5)
28.0 (61.7)
Model
F4BMH F5AMH
2.9 (3.9)
— 3.7 (5.0)
4000–5000
1450–1550
Model
F4BMH F5AMH
4-stroke, OHV
139.0 (8.5)
62.0  46.0 (2.4  1.8)
8.90 : 1
Tiller handle
Manual
Carburetor
CDI
Microcomputer
Choke valve
CR6HSB (NGK)
Water
Under water
Wet sump
F6CMH
F6CMH
—
4.4 (6.0)
4500–5500
F6CMH
1