Yamaha 90HP Jet Drive delivers consistent power output and precise maneuverability, making it ideal for navigating restricted or obstacle-heavy waterways. Its streamlined jet design ensures safe passage over shallow terrain while maintaining dependable engine performance.
We maintain ongoing availability of this unit for immediate supply across multiple regions. Whether for individual acquisition or multi–unit procurement, orders are fulfilled through a structured network that supports fast turnaround and continuous stock access.
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Specifications
90 HP
Our completely redesigned, 1.8-liter F90 Jet Drive outboard produces 65 hp at the pump. Its compact, lightweight SOHC four-cylinder, in-line design features a long-track induction system and Yamaha’s proprietary YDC-30 aluminum alloy. This creates a light, compact, powerful outboard for deck boats and deep-V hulls navigating shallow, rocky rivers, flats and sandbars.
- 354 pounds (including jet pump assembly)
- Fits 25-inch transom boats
- Solid 35-amp alternator
- Power Trim & Tilt
90 HP
| Weight † | 161kg (354 lbs) |
|---|---|
| Full Throttle RPM Range | 5000 ~ 6000 rpm |
| Fuel Induction System | EFI |
| Recommended Engine Oil | Yamalube® 4M (See owner’s manual) |
| Engine Type | Inline 4 |
| Displacement | 1.8L |
| Bore x Stroke | 81mm x 88.9mm (3.19 x 3.5 in) |
| Prop Shaft Horsepower | 65hp @ 5500rpm |
| Alternator Output at W.O.T. | 35 Amp |
| Compression Ratio | 10.0:1 |
| Recommended Fuel | Octane 87 |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel/Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Jet Nozzle |
| Intake | 16 |
| Ignition | TCI Microcomputer |
| Spark Plug | LFR5A-11 |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 3.2L/3.0L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | Direct Drive |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | Fits 25″ Transom |
| 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 Limited Pleasure Boat – 1 Year Limited Commercial |