Yamaha / FourStroke
Yamaha F40
Our 747-cc 40-hp midrange provides powerful performance in a compact package that’s available in both propeller and jet-pump driven models.
All Yamaha outboards

FourStroke
F40
- Power
- 40 hp
- Configuration
- 3 cyl
- Displacement
- 747cc
- Weight
- 97 kg (214 lbs) - 101kg (223 lbs)
Authorized
dealer
View on Yamaha site About this engine
Our 747-cc 40-hp midrange provides powerful performance in a compact package that’s available in both propeller and jet-pump driven models. With its single throttle valve, long-track intake manifold and electronic control module, it delivers easy starts, fast acceleration and excellent top-end speed.
Key features
- Fuel Economy
- Single Overhead Camshaft
- Precise Throttle Control
- Dependable Starting
- CONTROL AND COMFORT
- EASY ENGINE FLUSHING
- POWER TRIM AND TILT
Full specifications
- Weight †
- 97 kg (214 lbs) - 101kg (223 lbs)
- Full Throttle RPM Range
- 5000 ~ 6000 rpm
- Fuel Induction System
- EFI
- Recommended Engine Oil
- Yamalube® 4M (See owner's manual)
- Engine Type
- 3 cyl
- Displacement
- 747cc
- Bore x Stroke
- 65 x 75mm (2.56 x 2.95 in.)
- Prop Shaft Horsepower
- 40hp at 5500rpm
- Alternator Output at W.O.T.
- 17 Amp
- Compression Ratio
- 9.4:1
- Recommended Fuel
- Octane 87
- Recommended Fuel Filtration
- Yamaha 10-Micron Fuel/Water Separating Filter (external)
- C.A.R.B. Rating
- 2-Star
- Exhaust
- Through Propeller
- Intake
- 6
- Ignition
- CDI Microcomputer
- Spark Plug
- DPR6EB-9
- Starting System
- Electric
- Lubrication
- Wet Sump
- Engine Oil Capacity
- 1.7L/1.5L
- Recommended Cooling
- Thermostatic Control
- Ethanol Blend Limit
- 10% Maximum
- Gear Ratio
- 2.00:1
- Gear Shift
- Forward, Neutral, Reverse
- Shaft Length
- 20"
- Degree of Tilt
- 20°
- Degree of Trim
- -3° through +20°
- Mounting Centers
- N/A
- Steering Angle (maximum)
- 40° from center, either direction
- Warranty
- Limited 3-year Pleasure, 3-year Government, 1-Year Commercial























