Yamaha Midrange F40 Four Stroke
Print Full SpecsThis versatile four stroke blends power and fuel efficiency with quiet performance and quick starts. It’s great for skiffs, jons, inflatables and small pontoons.
| Engine Type | In-Line Three Cylinder |
| Displacement | (747cc) | 45.68 ci |
| Bore x Stroke | 65 x 75mm (2.56 x 2.95 in) |
| Prop Shaft Horsepower | 40 hp @ 5500 rpm |
| Compression Ratio | 9.4:1 |
| Fuel Induction | Electronic Fuel Injection |
| Exhaust | Through Propeller |
| Intake | Single Throttle Valve |
| Ignition | CDI Microcomputer |
| Spark Plug | DPR6EB-9 |
| Alternator Output | 17 Amp |
| Starting System | Electric w/PTT or Nitro Assist |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 1.7L/ 1.5L without filter |
| Full Throttle RPM Range | 5000 ~ 6000 rpm |
| Cooling | Water/Thermostatic Control |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| Recommended Fuel | Regular Unleaded (Minimum Pump Octane 87) |
| Recommended Fuel Filtration | Yamaha Mini 10-Micron Fuel/Water Separating Filter (external) |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | (26:13) 2.00:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | L = 20" |
| Degree of Tilt | PTT Models: 66° Nitro-Assist: 65° |
| Degree of Trim | -3° through +20° on "PTT" models. 5 postions on Nitro-Assist |
| C.A.R.B. Rating | 3-Star |
| Dry Weight | F40LA = 97kg (214 lbs) F40LEHA 101kg (223 lbs) |
| Steering Angle (maximum) | 40° from center, either direction |
| Warranty | 3-Year Pleasure, 3-Year Government, 1-Year Commercial |
