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. With its single throttle valve, long-track intake manifold and electronic control module, it delivers easy starts, fast acceleration and excellent top-end speed.
- Only 214 pounds
- Available in a 20” shaft
- Powerful 17-amp alternator
- Optional Variable Trolling RPM Switch (VTS®)



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:
- Steering Angle (maximum): 40° from center, either direction
- Warranty: Limited 3-year Pleasure, 3-year Government, 1-Year Commercial
*Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).
COMPATIBILITY
The 747-cc 40-hp midrange is compatible with tiller and mechanical controls and a range of gauges and props to suit your preference for performance, control and the display of data. It also allows you to access our Variable Trolling RPM Switch (VTS®) depending on your rigging. Explore compatible components below and contact your dealer for rigging expertise.
Compatible Controls:
Mechanical Controls
Multi-Function Tiller Handle
Compatible Gauges:
Command Link and Analog Gauges
FEATURES & BENEFITS
Power and Performance:
Fuel Economy
Single Overhead Camshaft
Precise Throttle Control
Dependable Starting
Convenience and Control:
Control And Comfort
Easy Engine Flushing
Power Trim And Tilt

RELIABILITY & DURABILITY
CORROSION PROTECTION
Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha Midrange outboards.