Yamaha Jet Drive · Virginia Beach
Yamaha F90 Jet Drive outboard: specs, rigging and repower in Virginia Beach.
The F90 Jet Drive is the 90 hp-class 1.8-liter four with a jet pump, listed by Yamaha at 65 hp at 5500 rpm at the pump. It fits a 25-inch transom, weighs 354 lb including the pump and has power trim and tilt, with mechanical or Multi-Function Tiller Handle control.
- Engine rating
- 90 hp class
- Output at the jet pump
- 65hp @ 5500rpm
- Engine type
- Inline 4
- Displacement
- 1.8L
- Transom
- Fits 25" Transom
- Weight †
- 161kg (354 lbs)
Specifications
Yamaha F90 Jet Drive
specs, as Yamaha lists them.
Specs and features: Yamaha, read from yamahaoutboards.com and Yamaha's Engine Comparison tool on 2026-10-05. Yamaha can change a model by model year; we confirm the exact engine when we quote.
| 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 Angle (maximum) | 35° from center, either direction |
| Warranty | Limited 3 Year Limited Pleasure Boat - 1 Year Limited 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).
Compared
How the F90 Jet compares
with the VF90, F90, F115 Jet, F60 Jet.
From Yamaha's spec tables; weights are the lightest Yamaha lists, valvetrain is from its dealer spec signs.
Same 90 hp class, Yamaha In-Line Four V MAX SHO
F90 Jet vs VF90
- Output (at the pump on jets): F90 Jet 65hp @ 5500rpm; VF90 90hp @ 5500 RPM.
- Weight: F90 Jet 1 lb heavier at the lightest weight Yamaha lists (354 lb vs 353 lb).
- Gear ratio: F90 Jet Direct Drive; VF90 (28/12) 2.33.
- Shaft or transom: F90 Jet 25-inch; VF90 20 and 25-inch.
- Mounting centers: F90 Jet N/A; VF90 26-inch.
Same on both: 1.8L displacement, SOHC (16-valve) valvetrain (spec sign), 35-amp alternator, 87 octane.
Same 90 hp class, Yamaha Midrange 115 to 75 hp
F90 Jet vs F90
- Output (at the pump on jets): F90 Jet 65hp @ 5500rpm; F90 90hp @ 5500 rpm.
- Weight: F90 Jet 1 lb heavier at the lightest weight Yamaha lists (354 lb vs 353 lb).
- Gear ratio: F90 Jet Direct Drive; F90 2.15:1.
- Shaft or transom: F90 Jet 25-inch; F90 20 and 25-inch.
- Mounting centers: F90 Jet N/A; F90 26-inch.
Same on both: 1.8L displacement, SOHC (16-valve) valvetrain (spec sign), 35-amp alternator, 87 octane.
Same family
F90 Jet vs F115 Jet
- Output (at the pump on jets): F90 Jet 65hp @ 5500rpm; F115 Jet 80hp @ 5800rpm.
- Weight: F90 Jet 23 lb lighter at the lightest weight Yamaha lists (354 lb vs 377 lb).
Same on both: 1.8L displacement, Direct Drive gear ratio, 35-amp alternator, 25-inch transom, 87 octane.
Same family
F90 Jet vs F60 Jet
- Output (at the pump on jets): F90 Jet 65hp @ 5500rpm; F60 Jet 40hp @ 5500rpm.
- Displacement: F90 Jet 1.8L; F60 Jet 1.0L.
- Valvetrain (spec sign): F90 Jet SOHC (16-valve); F60 Jet SOHC (8-valve).
- Weight: F90 Jet 97 lb heavier at the lightest weight Yamaha lists (354 lb vs 257 lb).
- Alternator: F90 Jet 35 amp; F60 Jet 17 amp.
Same on both: Direct Drive gear ratio, 25-inch transom, 87 octane.
Rigging
Controls, gauges
and Helm Master EX.
Controls
- Mechanical Controls (compatible)
- Multi-Function Tiller Handle (compatible)
- Helm Master® EX (not available)
- Command Link Plus Digital Controls (not available)
Gauges
- Command Link and Analog Gauges (compatible)
- Command Link Plus Display (not available)
Yamaha lists Helm Master EX as not available for the F90 Jet Drive.
F90 Jet Drive model codes
| Model code | Controls | Color |
|---|---|---|
| F90JB | Remote mechanical | Gray |
Model codes from Yamaha's current model-code list. Ask us which code fits your boat; we confirm it when we quote.
Features
What's built into
the F90 Jet Drive.
- 90 hp-class jet model; Yamaha lists 65 hp at 5500 rpm at the pump.
- 354 lb including the jet pump assembly.
- Fits 25-inch transoms; 35-amp alternator; power trim and tilt.
- Phaze Five anti-corrosion paint over YDC-30 alloy.
- ECM connects to Yamaha Diagnostic System software.
- On-engine water-separating fuel filter with water sensor.
- One-piece cowling with air intake labyrinth.
- Multi-point EFI.
- SOHC or DOHC platforms depending on model.
- Microcomputer ignition timing.
- Composite intake manifold with long tube intake tracks.
- No gearcase or propeller below the hull, so the boat can pass over obstructions.
- F40, F60, F90 and F115 jets accept the optional Multi-Function Tiller Handle.
- Freshwater flush device works without running the engine.
Repower
Repowering with the F90 Jet Drive
at Coastal Marine.
Coastal Marine is an Elite Yamaha dealer and an authorized Yamaha Repower Center on Shore Drive in Virginia Beach. A repower with the F90 Jet Drive takes the old or worn-out outboard off a sound hull, of any make, and puts the new Yamaha on, with the controls, gauges and rigging the new setup needs. Warranty work on the Yamaha power we install is authorized in-house.
We don't post engine prices. Tell us the boat, what's on the transom now and roughly how many hours it has, and we'll quote the F90 Jet Drive for it. Financing is available on repowers through Yamaha Financial Services.
F90 Jet repower fit
- Transom
- 25-inchYamaha spec table
- Weight †
- 354 lbYamaha spec table
- Control types
- remote mechanical (F90JB)Yamaha model-code list
Common questions
Yamaha F90 Jet Drive
questions, answered.
Get a quote
on new Yamaha power.
Tell us the boat, the engines on it now and roughly the hours, and we'll quote the F90 Jet Drive for it. We answer same business day.