Yamaha

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
Yamaha F40

FourStroke

F40

Power
40 hp
Configuration
3 cyl
Displacement
747cc
Weight
97 kg (214 lbs) - 101kg (223 lbs)
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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