2025 Yamaha Outboards F4 hp
$1,735.00
Collins Marine | Tonawanda, NY
Yamaha 2025 F4 Portable Outboard Engine
The Yamaha F4 is a compact 139‑cc, four–stroke outboard that delivers reliable power for recreational boating and small watercraft. Designed to be lightweight yet robust, the engine weighs only about 60 pounds when fitted with a 15″ shaft.
Key Features
- Tiller Control: Forward‑neutral‑reverse shifting with ...
Yamaha 2025 F4 Portable Outboard Engine
The Yamaha F4 is a compact 139‑cc, four–stroke outboard that delivers reliable power for recreational boating and small watercraft. Designed to be lightweight yet robust, the engine weighs only about 60 pounds when fitted with a 15″ shaft.
Key Features
- Tiller Control: Forward‑neutral‑reverse shifting with an ergonomic twist–grip throttle for easy handling on any boat.
- Integrated Fuel System: Built‑in fuel tank plus optional external access, giving you extended range without compromising weight or balance.
- Aluminum Propeller and Tiller Handle: Durable construction that resists corrosion while maintaining a low profile for smooth operation.
- Manual Starter with Decompression Device: Simple to start even in cold conditions, reducing wear on the engine’s internals.
Technical Specifications (2025 F4SMHA)
The 1‑cylinder engine produces a peak of 4 hp at 4500 rpm. It features an oil capacity of 0.6 L and operates on gasoline with up to 10% ethanol blend. The alternator delivers 6 amps, ensuring sufficient power for accessories.
| Attribute | Description |
|---|---|
| Bore & Stroke | 2.44″ × 1.81″ (62 mm × 46 mm) |
| Compression Ratio | 8.9:1 |
| Throttle Range | 4000–5000 rpm |
| Spark Plug | CR6HSB (wet sump lubrication) |
| Cooling System | Thermostatic control recommended |
| Gear Ratio (Primary) | 2.08:1 |
| Shaft Length Options | 15″ or 20″ |
| Maximum Steering Angle | ±90° from centerline |
Warranty and Service
The Yamaha F4 comes with a limited three‑year pleasure warranty, an additional three years for government use, and one year coverage for commercial applications.
This lightweight yet powerful outboard is ideal for kayaks, small dinghy boats, or any craft requiring dependable performance in open water. Its ergonomic design and extended fuel options make it a top choice for boating enthusiasts looking to upgrade their propulsion system without adding bulk.
| Condition | NEW | |
| Stock Number | 8385 | |
| Year | 2025 | |
| Make | Yamaha Outboards | |
| Model | F4 hp | |
| Vehicle Type | Outboard | |
| Category | Four Stroke | |
| Engine | F4SMHA | |
| Type/Use | F4SMHA | |
| Propulsion Type | Powered | |
| Engine Power | 4 HP | |
| Engine Information | F4SMHA | |
| Dry Weight | 60 lbs | |
| Fuel Type | Gas |
| Engine | |
| Engine Type | 1 cyl |
| Engine Power | Prop Shaft: 4hp at 4500 rpm |
| Displacement | 139cc |
| Bore | 2.44 in (62 mm) |
| Stroke | 1.81 in (46 mm) |
| Compression Ratio | 8.9:1 |
| Throttle | Full RPM Range: 4000 ~ 5000 rpm |
| Steering | Angle (maximum): 90° from center, either direction |
| Exhaust | Above Propeller |
| Ignition | CDI |
| Oil Type | Recommended: Yamalube® 4M (See owner's manual) |
| Lubrication | Wet Sump |
| Cooling | Recommended: Thermostatic Control |
| Gear Ratio (Primary) | 2.08:1 |
| Gear Shifter | Forward, Neutral, Reverse |
| Induction | Carb |
| Spark Plug | |
| Spark Plug | CR6HSB |
| Electric | |
| Starter | System: Manual |
| Alternator Output, Maximum | Output at W.O.T.: 6 Amp |
| Fuel System | |
| Fuel System | Ethanol Blend Limit: 10% Maximum |
| Fuel Type | Recommended: Octane 87 |
| Dimensions | |
| Length | Shaft: 15" - 20" |
| Dimensions | Degree of Tilt: 69° | Degree of Trim: -4° through +16° |
| Capacities | |
| Oil capacity | 0.6L |
| Weights | |
| Weight | 60 lbs (27 kg) - 61 lbs (28 kg) |
| Features | |
| Features | Intake: 2 |
| Warranty | |
| Warranty | Limited 3-year Pleasure, 3-year Government, 1-Year Commercial |
| Dry Weight | 60 lbs approx. |
| Engine Power | 4 HP |
2022 Yamaha Marine F4
Our 139-cc 4-hp portable outboard mirrors our OHV F6, with a couple less horses. It features the same ergonomic, easy-grip starter handle with a built-in decompression device for effortless starts. The F4 also features a built-in fuel tank with the option of switchable access to an additional external tank for amazing extended range. There’s no stopping this little brute.
Features may include:
Tiller-handle control with forward-neutral-reverse shifting and an ergonomic twist-grip throttle
Only 59 pounds (15” shaft model)
Available in 15” and 20” shaft lengths
Solid 6-amp alternator
Estimate Payments
Payment calculations are just estimates. Rates and terms vary day to day. Not an agreement, informational purposes only. Contact dealer for current rates, terms, and payment plans, etc.
Advertised pricing excludes applicable taxes title and licensing and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers. Not all options listed available on pre-owned models. Contact dealer for details.
