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The all-new F90 and F75 Midrange four strokes have stepped up to 1.8L displacement and now feature a Single Overhead Camshaft, with four valves per cylinder. That makes them both 13 pounds lighter, and our 90 hp a top performer in both torque and acceleration.
Our 1.8-liter I-4 F115 features a double overhead camshaft with four valves per cylinder. This increases volumetric efficiency and gives the F115 a competitive power to weight.
| Engine Type | Inline 4 |
|---|---|
| Displacement | 1.8L |
| Bore x Stroke | 81 x 88.9mm |3.19 x 3.5in |
| Prop Shaft Horsepower | 115hp at 5500 rpm |
| Full Throttle RPM Range | 5300 ~ 6300 |
| Alternator Output at W.O.T. | 35 Amp |
| Compression Ratio | 10.0:1 |
| Fuel Induction System | EFI |
| Weight † | 171 kg (377 lbs) – 175 kg (386 lbs) |
| Recommended Fuel | Octane 87 |
| Recommended Engine Oil | Yamalube® 4M / (See owner’s manual) |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel / Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller |
| Intake | 16 |
| Ignition | TCI Microcomputer |
| Spark Plug | LKR6E |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 3.2/3.0L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 2.15:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 20″ – 25″ |
| Degree of Tilt | 70° |
| Degree of Trim | -4° through +16° |
| Mounting Centers | 26″ |
| Steering | |
| Steering Angle (maximum) | 35° from center, either direction |
| Warranty | Limited 3 Year Limited Pleasure Boat – 1 Year Limited Commercial |
The all-new 1.8-liter I-4 F90 features greater displacement and a single-overhead-camshaft design with four valves per cylinder. This boosts power and volumetric efficiency, streamlines design, and makes the F90 a leader in torque and acceleration.
| Engine Type | Inline 4 |
|---|---|
| Displacement | 1.8L |
| Bore x Stroke | 81 x 88.9mm (3.19 x 3.5 in) |
| Prop Shaft Horsepower | 90hp @ 5500 rpm |
| Full Throttle RPM Range | 5000 ~ 6000 |
| Alternator Output at W.O.T. | 35 Amp |
| Compression Ratio | 10.0:1 |
| Fuel Induction System | EFI |
| Weight † | 160kg (353 lbs) – 164kg (362 lbs) |
| Recommended Fuel | Octane 87 |
| Recommended Engine Oil | Yamalube® 4M (See owner’s manual) |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel/Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller |
| Intake | 16 |
| Ignition | TCI Microcomputer |
| Spark Plug | LFR6A-11 |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 3.2/3.0L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 2.15:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 20″ – 25″ |
| Degree of Tilt | 70 |
| Degree of Trim | -4° through +66° |
| Mounting Centers | 26″ |
| Steering | |
| Steering Angle (maximum) | 35° from center, either direction |
| Warranty | Limited 3-year Pleasure, 3-year Government, 1-Year Commercial |
The all-new 1.8-liter I-4 F75 features a step up in displacement from its previous design. Still, its single-overhead-camshaft with four valves per cylinder keeps it compact and shaves off 13 pounds. Bigger power plus lighter weight equals one thrilling new outboard.
| Engine Type | Inline 4 |
|---|---|
| Displacement | 1.8L |
| Bore x Stroke | 81 x 88.9mm (3.19 x 3.5in) |
| Prop Shaft Horsepower | 75hp at 5500 rpm |
| Full Throttle RPM Range | 5000 ~ 6000 rpm |
| Alternator Output at W.O.T. | 35 Amp |
| Compression Ratio | 10.0:1 |
| Fuel Induction System | EFI |
| Weight † | 160 kg (353 lbs) |
| Recommended Fuel | Octane 87 |
| Recommended Engine Oil | Yamalube® 4M (See owner’s manual) |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel/Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller |
| Intake | 16 |
| Ignition | TCI Microcomputer |
| Spark Plug | LFR6A-11 |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 3.2/3.0L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 2.15:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 20″ |
| Degree of Tilt | 70° |
| Degree of Trim | -4° through +16° |
| Mounting Centers | N/A |
| Steering | |
| Steering Angle (maximum) | 35° from center, either direction |
| Warranty | Limited 3-year Pleasure, 3-year Government, 1-Year Commercial |
Spend-A-Day Marina is your premier destination for Yamaha Outboard Engines. Discover the power, reliability, and innovation of Yamaha’s world-renowned marine engines right here. Whether you’re a seasoned boater or a newcomer to the water, our expert team is dedicated to helping you find the perfect Yamaha Outboard Engine to suit your needs.
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