2025 Yamaha Marine Portables 4 HP
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Brown's Auto & Marine | Newport, NH
The new Yamaha Marine Portable Outboards – 2025 4 HP bring unmatched power and reliability to every boating adventure. Designed for lightweight, versatile use, these engines are ideal for tenders, canoes or small boats that need a quick boost.
Why Choose the Yamaha Portable 4‑hp?
The F6, F4 and F2.5 series combine effortless starts with ...
[read more]The new Yamaha Marine Portable Outboards – 2025 4 HP bring unmatched power and reliability to every boating adventure. Designed for lightweight, versatile use, these engines are ideal for tenders, canoes or small boats that need a quick boost.
Why Choose the Yamaha Portable 4‑hp?
The F6, F4 and F2.5 series combine effortless starts with exceptional fuel efficiency, making them perfect for day trips or extended excursions on open water.
Engine Highlights
- Power: 139‑cc displacement delivers a steady 4 HP at 4500 rpm.
- Weight: Only about 60 lbs (27–28 kg) for the 15” shaft model – light enough to handle easily yet powerful enough to move smoothly through water.
- Shaft Options: Available in both 15" and 20" lengths to fit a variety of craft sizes.
- Starter System: Ergonomic easy‑grip handle with built‑in decompression for quick, one‑hand starts.
- Fuel Flexibility: Supports up to 10% ethanol blends and runs on common 87 octane gasoline.
Performance & Features
- 6 amp alternator for reliable electrical output.
- CARB rating of 3‑Star, ensuring clean combustion and low emissions.
- Tiller steering with a maximum angle of ±90°, providing precise handling in tight spots.
- Wet sump lubrication system keeps the engine running smoothly even under heavy use.
Extended Range Options
The F4 model includes an optional external fuel tank, allowing you to extend your range without compromising performance. Switchable access ensures easy refueling on long trips.
Durability & Warranty
- Warranty: Limited 3‑year Pleasure and Government coverage; 1‑Year Commercial warranty.
- Built to handle the demands of recreational boating while maintaining low maintenance needs.
Specifications Snapshot
| Engine Type | |
| Bore: | 62 mm (2.44 in) |
| Stroke: | 46 mm (1.81 in) |
| Compression Ratio: | 8.9:1 |
| Spark Plug | |
| Name: | CR6HSB |
| Electrical | |
| Alternator Output: | Maximum 6 A |
| Fuel System | |
| Ethanol Limit: | 10% |
| Recommended Fuel: | 87 octane gasoline |
| Dimensions & Weight | |
| Shaft Lengths: | 15" or 20" |
| Weight: | 60–61 lbs (27‑28 kg) |
| Capacities | |
| Oil Capacity: | 0.6 L |
The 2025 Yamaha Marine Portable 4 HP Outboard is the perfect companion for any watercraft that demands power, reliability and portability. Whether you’re heading out on a quick day trip or planning an extended cruise, this engine delivers performance without compromise.
| Condition | NEW | |
| Stock Number | 6ECKL1000435 | |
| Year | 2025 | |
| Make | Yamaha Marine | |
| Model | Portables 4 HP | |
| Vehicle Type | Outboard | |
| Category | Portable | |
| VIN | 6ECKL1000435 | |
| Type/Use | F4LMHA | |
| Propulsion Type | Powered |
| 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 | Tiller | 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 | C.A.R.B. Rating: 3-Star |
| Warranty | |
| Warranty | Limited 3-year Pleasure, 3-year Government, 1-Year Commercial |
| Engine Power | Prop Shaft: 4hp at 4500 rpm |
PORTABLESThe harbor is like glass as you board the tender to your cuddy for a day on the water; your trusty Yamaha Portable ushering you out. With easy starts, incredible efficiency and reliable performance, Yamaha’s F6, F4 and F2.5, are perfect for all sorts of light duty. Wherever the day takes you, take along a little extra power with Yamaha’s smallest Portables.
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:
Only 60 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.
