$1,925.00
The 2026 Yamaha F4 is the current model year of Yamaha’s record-efficient 139cc four stroke — 4HP, 59 lbs, F-N-R tiller shifting, internal fuel tank with external tank compatibility, and decompression-assisted starting. The go-to upgrade for tenders, RIBs, and jon boats. In stock and ready to ship.
Yamaha F4 2026: The Current 4HP Benchmark in Portable Four Strokes
The 2026 Yamaha F4 is the newest release of Yamaha’s 139cc single-cylinder OHV four stroke — a platform with a Guinness World Record for fuel efficiency to its name. It produces 4HP at 4,500 rpm, weighs 59 lbs with the 15″ shaft (20″ long shaft available), and gives you tiller control with true Forward-Neutral-Reverse shifting, 180° steering, and a dampened twist-grip throttle. Its integral 1.1L (0.29 gal) fuel tank switches to an external tank through the included connection tap, its recoil starter uses automatic decompression for light pulls, and start-in-gear prevention is built in. Buying the current model year gets you the freshest factory build in the small horsepower outboard class.
Key Features of the Yamaha F4 (2026 Model Year)
- 139cc OHV single-cylinder four stroke — the world-record fuel economy platform
- 59 lbs dry (15″ shaft) — built-in handles and resting pads for solo carrying
- F-N-R gear shifting — genuine reverse with a large shift handle and 180° steering
- Dual fuel capability — 1.1L internal tank plus external tank connection (tap included)
- Decompression-assisted manual start — with start-in-gear prevention
- 6-amp alternator output — add Yamaha’s charging kit to top up a battery
- Easy Storage Oil Retention System — leak-free storage on side or front
- CDI ignition, CARB 3-Star rating — dependable and 50-state legal
Specifications
- Engine Type: 1-cylinder, OHV four stroke, carbureted
- Displacement: 139cc
- Horsepower: 4 HP at 4,500 rpm
- Full Throttle RPM Range: 4,000–5,000
- Bore x Stroke: 62 x 46mm
- Compression Ratio: 8.9:1
- Starting: Manual (recoil) with decompression device
- Steering: Tiller, 180°, twist-grip throttle, F-N-R shift
- Shaft Length: 15″ (S) / 20″ (L)
- Fuel: Unleaded gasoline, minimum 87 octane
- Fuel Tank: Internal 0.29 gal (1.1L) + external tank compatible
- Alternator: 6 Amp at W.O.T. (charging kit sold separately)
- Dry Weight: From 59 lbs
Benefits
The 2026 F4 blends the latest factory refinements with the platform’s proven strengths: single-gallon fuel sipping, quiet trolling, effortless starting, and storage flexibility that suits truck beds and cockpit lockers. Real reverse gear and external-tank range make it a genuine daily workhorse, not just a backup motor.
Applications
Larger tenders and RIBs, 10–12 ft jon boats, aluminum fishing skiffs, square-stern canoes, and sailboat auxiliary duty (choose the 20″ shaft). Need more speed at the same weight? The Yamaha F6 2026 shares this block at 6HP. Want minimal weight? See the Yamaha F2.5 2026.
Compare Model Years
Save with the Yamaha F4 2024 or Yamaha F4 2025, browse all Yamaha Outboards, or read our Yamaha brand guide.
Frequently Asked Questions
How much does the 2026 Yamaha F4 cost?
The 2026 Yamaha F4 is priced at $1,925 and is in stock.
Does the 2026 F4 have reverse?
Yes — full Forward-Neutral-Reverse gear shifting is standard.
Can I run an external fuel tank on the F4?
Yes. The switchable external tank connection tap is included from the factory alongside the 0.29-gallon internal tank.
What’s the F4’s weight?
From 59 lbs dry (15″ shaft); around 61 lbs for the 20″ version.
F4 or F6 — which should I buy?
Both share the 139cc block and weigh about the same. Choose the F4 for maximum economy at a lower price; choose the F6 for noticeably more speed and load-carrying headroom.
| Brand | Yamaha |
|---|---|
| Model | F4 |
| Model Year | 2026 |
| Horsepower | 4 HP |
| Engine Type | 1-Cylinder OHV Four Stroke, 139cc |
| Starting System | Manual (Recoil) with Decompression |
| Fuel Type | Unleaded Gasoline (min 87 octane) |
| Shaft Length | 15" (S) / 20" (L) |
| Steering | Tiller, 180°, F-N-R Shift |
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