Yamaha Midrange 115 to 75 hp · Virginia Beach
Yamaha F90 outboard: specs, rigging and repower in Virginia Beach.
The F90 has the same 1.8-liter displacement as the F115 with a single overhead cam, rated 90 hp and weighing 353 lb with a 20-inch shaft, 13 lb lighter than the design it replaced. It comes in 20- and 25-inch shafts, and its trolling switch runs 550 to 1000 RPM.
- Horsepower
- 90 hp
- Engine type
- Inline 4
- Displacement
- 1.8L
- Shaft length
- 20" - 25"
- Weight †
- 160kg (353 lbs) - 164kg (362 lbs)
Specifications
Yamaha F90
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 † | 160kg (353 lbs) - 164kg (362 lbs) |
|---|---|
| Full Throttle RPM Range | 5000 ~ 6000 |
| Fuel Induction System | EFI |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| 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 |
| 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 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 Angle (maximum) | 35° 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).
Rigging
Shaft lengths, controls
and Helm Master EX.
Shaft lengths
Yamaha lists: 20" - 25"
We confirm the right shaft for your transom before we quote.
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.
Propellers Yamaha names for the F90
- Yamaha Talon SSFrom Yamaha's description: For F70 to F115 and T50/T60 on pontoon, walleye, fiberglass and deep-V boats.
- Yamaha Talon GPFrom Yamaha's description: For lighter boats with T50 to F115 outboards.
- Yamaha Talon PontoonFrom Yamaha's description: For pontoons, including heavily loaded ones, with T50 to F115 outboards.
- Yamaha Talon SS4From Yamaha's description: Fits F70 to VF115 and T50/T60 K-series (4.25-inch) gearcases; SDS standard.
- Yamaha TalonFrom Yamaha's description: High-grip, low-slip prop for F70 to F115 and T50/T60 pontoons and aluminum boats.
Yamalube oil change kit
- Medium Oil Change KitYamaha's row: Model F90 / VF90 · PROD. YEAR '03~ · 05W-30 KIT NA · 10W-30 KIT LUB-MRNMD-KT-11 · 20W-40 KIT LUB-MRNMD-KT-21
F90 model codes
| Model code | Controls | Color |
|---|---|---|
| F90LB | Remote mechanical | Gray |
| F90XB | Remote mechanical | Gray |
| F90LB2 | Remote mechanical | Pearl White |
| F90XB2 | Remote mechanical | Pearl White |
| F90LB3 | Remote mechanical | Matte Brown |
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.
- 1.8-liter SOHC with four valves per cylinder, rated 90 hp.
- 353 lb, 13 lb lighter than the previous design.
- 20- or 25-inch shafts; 35-amp alternator.
- Optional variable trolling RPM through the Command Link tachometer.
- Phaze Five paint over YDC-30 alloy plus stainless drive, prop and shift shafts and sacrificial anodes.
- Pressurized wet-sump oiling with a compact oil pump.
- Warning system limits RPM to 2000 on overheat or low oil pressure.
- Updated cowling with a Water Draining Intake Duct and side intakes.
- Labyrinth exhaust and revised muffler; quieter than the previous design.
- Multi-point EFI.
- Composite intake manifold with long tube tracks for low-end and mid-range torque.
- TCI microcomputer ignition timing.
- F115 uses DOHC; F90 and F75 use SOHC; all have four valves per cylinder.
- Compatible with the Multi-Function Tiller Handle.
- Three-phase alternators up to 35 amps.
- Variable Trolling RPM Switch: 650-900 RPM (F115) or 550-1000 RPM (F90, F75) in 50-RPM steps.
- Freshwater flush device works without starting the engine.
Repower
Repowering with the F90
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 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 for it. Financing is available on repowers through Yamaha Financial Services.
Ready when you are.
The Midrange 115 to 75 hp family
Other engines
in this family.
Common questions
Yamaha F90
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 for it. We answer same business day.