Yamaha F4B Service Manual

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Model data
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A
Lower unit
Bracket unit
Fuel and oil requirement
(*1) If the recommended engine oil grades are not available, use engine oil with an API classification
of SH, SJ, or SL and an SAE classification of 15W-40, 20W-40, or 20W-50.
(*2) Meeting both API and SAE requirements.
Item Unit
Model
F4BMH F5AMH F6CMH
Gear shift positions F-N-R
Gear ratio 2.08 (27/13)
Reduction gear type Straight bevel gear
Clutch type Dog clutch
Propeller shaft type Spline
Propeller direction (rear view) Clockwise
Propeller mark BA
Item Unit
Model
F4BMH F5AMH F6CMH
Trim angle
At 12º boat transom Degree 4 to 20
Tilt-up angle Degree 64
Steering angle Degree 90 + 90
Trim and tilt system Manual
Item Unit
Model
F4BMH F5AMH F6CMH
Fuel type Regular unleaded gasoline
Fuel minimum rating RON 91
Engine oil
4-stroke motor oil with combinations of the fol-
lowing SAE and API oil classifications
Engine oil grade (*1)
API SE, SF, SG, SH, SJ, SL
SAE 5W-30, 10W-30, 10W-40
Total engine oil quantity (oil pan
capacity)
L (US qt,
Imp qt)
0.6 (0.63, 0.53)
Gear oil type Hypoid gear oil
Gear oil grade (*2)
API GL-4
SAE 90
Gear oil quantity
L (US qt,
Imp qt)
0.1 (0.11, 0.09)

Yamaha F4B Specifications

General

Brand	Yamaha
Model	F4B
Category	Outboard Motor
Language	English