After researching manufacturer specifications, industry safety standards, and aggregated owner feedback, we evaluated the best small outboard engines for tenders, dinghies, and small fishing boats. Our comparison focuses on reliability, fuel efficiency, weight, and ease of use. We have identified seven top models that consistently deliver strong performance in the sub-15 horsepower range.
Each engine was assessed based on published data, owner reviews, and common service records. We highlight real strengths and limitations to help you choose the right engine for your needs. Note that we have not physically installed or evaluated these engines ourselves; our analysis is based on available information and user experiences.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Tohatsu 9.8 HP 4-Stroke Outboard Best Overall Small Outboard 9.8 HP, 4-stroke, 19.5-inch shaft, 84 lbs, electric start available |
9.2 | 🛒 Check Price |
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Mercury 9.9 HP ProKicker 4-Stroke Best for Trolling 9.9 HP, 4-stroke, 20-inch shaft, 125 lbs, electric start, alternator |
8.8 | 🛒 Check Price |
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Yamaha F6 6 HP 4-Stroke Best Lightweight Portable 6 HP, 4-stroke, 15-20 inch shaft options, 57 lbs, manual start |
8.5 | 🛒 Check Price |
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Suzuki DF9.9 9.9 HP 4-Stroke Best Value 9.9 HP 9.9 HP, 4-stroke, 20-inch shaft, 99 lbs, manual or electric start |
8.4 | 🛒 Check Price |
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Honda BF2.3 2.3 HP 4-Stroke Best Ultra-Portable 2.3 HP, 4-stroke, 15-inch shaft, 28 lbs, manual start, integral fuel tank |
8.1 | 🛒 Check Price |
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Parsun 3.6 HP 2-Stroke Outboard Budget Friendly 2-Stroke 3.6 HP, 2-stroke, 15-inch shaft, 30 lbs, manual start, external fuel tank |
7.8 | 🛒 Check Price |
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Lehr 2.5 HP Propane Outboard Eco Friendly Alternative 2.5 HP, propane-fueled, 15-inch shaft, 37 lbs, manual start, uses 1 lb propane cylinders |
7.3 | 🛒 Check Price |
1. Tohatsu 9.8 HP 4-Stroke Outboard: Best Overall Small Outboard
The Tohatsu 9.8 HP 4-Stroke is our top pick for small outboards. Based on owner feedback and the spec sheets, it offers a great balance of power, weight, and reliability. The 4-stroke engine runs cleanly and quietly, and the 84-pound weight makes it manageable for one person to handle. It starts easily and idles smoothly, which is important for trolling or maneuvering in tight spaces.
However, the electric start model weighs more and costs significantly more than the manual start version. If you prioritize weight savings and simplicity, the manual start is the better choice. This engine is not ideal for those needing a high-speed planing hull; it is best for displacement-speed boats like tenders and small sailboats.
- Lightweight design at 84 lbs makes it easy to carry and mount
- Smooth and quiet 4-stroke engine with low vibration
- Excellent fuel efficiency, ideal for long days on the water
Pros: Very reliable with strong dealer support; Good power-to-weight ratio
Cons: Electric start version adds significant weight and cost
2. Mercury 9.9 HP ProKicker 4-Stroke: Best for Trolling
The Mercury 9.9 HP ProKicker is a specialized trolling motor that excels in its role. Our research shows it is built to commercial standards, with a robust alternator that keeps batteries charged for electronics and electric trolling motors. The engine runs exceptionally smoothly at idle, and the throttle response is precise. Many owners report it as a workhorse that starts every time.
However, the ProKicker is heavy at 125 pounds, making it difficult to transport and mount without assistance. It is also more expensive than general-purpose outboards. If you do not need a dedicated trolling motor or have a very small boat, a lighter and more affordable model like the Tohatsu 9.8 may serve you better.
- Purpose-built for trolling with a high-output alternator to charge batteries
- Extremely durable commercial-grade construction
- Smooth idle and precise throttle control for slow speeds
Pros: Excellent for trolling and kicker applications; Long-lasting reliability
Cons: Heavier than competitors at 125 lbs; Higher price point
3. Yamaha F6 6 HP 4-Stroke: Best Lightweight Portable
The Yamaha F6 6 HP is a favorite among sailors and dinghy owners who prioritize portability. At just 57 pounds, it is one of the lightest 4-stroke outboards in its class. It starts easily and runs quietly, making it ideal for small inflatables and rigid hulls. Yamaha’s reputation for reliability is well-supported by owner reviews.
That said, 6 HP is not enough to plane a heavily loaded dinghy or a larger tender. If you need to get on plane quickly or carry more gear, consider a 9.8 or 9.9 HP model. Also, the F6 lacks an electric start option, which may be a drawback for some users.
- Ultra-lightweight at 57 lbs, easy for one person to carry
- Compact design fits in small storage spaces
- Reliable Yamaha quality with good parts availability
Pros: Very portable and easy to handle; Quiet and fuel-efficient
Cons: Limited power for planing larger tenders; Manual start only on this model
4. Suzuki DF9.9 9.9 HP 4-Stroke: Best Value 9.9 HP
The Suzuki DF9.9 offers a strong value proposition for boaters who want 9.9 HP without paying a premium. Our evaluation shows it delivers comparable performance to more expensive brands, with Suzuki’s lean burn technology providing good fuel efficiency. The manual start version weighs 99 pounds, which is reasonable for its power class.
However, some owner feedback indicates that the engine can be difficult to start in cold conditions, especially if the carburetor is not properly adjusted. Also, Suzuki’s dealer network is not as extensive as Yamaha or Mercury, which could affect service availability in some areas. If you need a reliable starter in all conditions, the Tohatsu or Mercury may be better choices.
- Competitive price for a 9.9 HP 4-stroke outboard
- Lean burn technology for improved fuel economy
- Lightweight at 99 lbs with manual start
Pros: Good value for the power; Reliable and smooth running
Cons: Some owners report harder starting when cold; Less dealer network than Yamaha or Mercury
5. Honda BF2.3 2.3 HP 4-Stroke: Best Ultra-Portable
The Honda BF2.3 is the go-to choice for those needing a truly portable outboard for a kayak, small inflatable, or as an auxiliary for a sailboat. At 28 pounds, it is easy to lift and store. The 4-stroke engine is quiet and fuel-efficient, and the integral fuel tank simplifies setup. Honda’s reputation for durability is well-earned.
However, 2.3 HP is only enough for displacement speeds on very small boats. Do not expect to plane or move quickly against current. The integral tank holds only about 0.3 gallons, limiting range. If you need more power or longer run times, consider a larger outboard.
- Extremely lightweight at 28 lbs, perfect for kayaks and small inflatables
- Integral fuel tank eliminates need for external tank
- Quiet and clean 4-stroke operation
Pros: Very easy to carry and store; Reliable Honda quality
Cons: Very limited power, only suitable for slow speeds; Integral tank limits range
6. Parsun 3.6 HP 2-Stroke Outboard: Budget Friendly 2-Stroke
The Parsun 3.6 HP is a budget-oriented 2-stroke outboard that appeals to occasional users or those on a tight budget. It is lightweight and provides decent power for a small dinghy or inflatable. The 2-stroke design is simple and easy to work on, and parts are inexpensive.
However, owner feedback indicates that reliability can be inconsistent, and the engine is noticeably louder and smokier than a comparable 4-stroke. It also requires mixing oil and fuel. For frequent or long-term use, we recommend investing in a 4-stroke from a major brand. This engine is best for emergency backup or very occasional use.
- Very affordable price for a 2-stroke outboard
- Lightweight at 30 lbs and easy to transport
- Simple design with fewer parts to maintain
Pros: Low cost of entry; Good power for its weight
Cons: 2-stroke is louder and smokier than 4-stroke; Build quality and longevity are below major brands
7. Lehr 2.5 HP Propane Outboard: Eco Friendly Alternative
The Lehr 2.5 HP propane outboard offers a unique alternative for eco-conscious boaters. Propane fuel eliminates the hassle of gasoline, ethanol, and oil mixing. It starts easily even in cold weather, and the engine runs cleanly with no smoke. It is lightweight and suitable for small tenders and kayaks.
However, the power is limited, and a 1-pound propane cylinder provides only about 45 minutes to an hour of runtime at full throttle. Carrying spare cylinders is necessary for longer trips. Also, Lehr’s dealer network is small, and replacement parts can be hard to find. This outboard is best for short trips near the dock or as a backup.
- Runs on clean-burning propane, no fuel mixing or spills
- Instant starting in cold weather
- Lightweight and compact
Pros: Environmentally friendly with no ethanol issues; Easy to start and maintain
Cons: Limited power and range per propane cylinder; Fewer dealers and parts availability
Frequently Asked Questions
What size outboard do I need for my dinghy?
The right size depends on your boat’s weight and how you plan to use it. For a small inflatable or tender under 10 feet, 2.5 to 6 HP is usually sufficient for displacement speeds. For planing or carrying heavier loads, consider 9.8 or 9.9 HP. Check your boat’s maximum horsepower rating before purchasing.
4-stroke vs 2-stroke: which is better for a small outboard?
4-stroke outboards are quieter, cleaner, and more fuel-efficient, making them better for the environment and more pleasant to use. They are also easier to start and maintain. 2-strokes are lighter, simpler, and often cheaper, but they are louder, smokier, and require oil mixing. For most users, a 4-stroke is the better choice.
How do I transport and store a small outboard?
Small outboards under 30 HP can be transported in a car trunk or SUV. Always secure the engine upright or on its side with a stand. For storage, run the fuel system dry or use fuel stabilizer, change the gear oil, and store in a dry, ventilated area. Propane models require no fuel storage concerns.
What shaft length do I need?
Measure from the transom top to the waterline. For small boats, a 15-inch shaft is standard for inflatables and small dinghies. A 20-inch shaft is common for larger tenders and sailboats. The anti-ventilation plate should be level with the bottom of the hull.
Are electric start outboards worth the extra cost?
Electric start adds weight and cost but provides convenience, especially for those with limited mobility or who start and stop frequently. For small outboards under 10 HP, manual start is usually reliable and simpler. Consider your physical ability and usage pattern before deciding.
Our Verdict
After researching and comparing the top small outboard engines, the Tohatsu 9.8 HP 4-Stroke stands out as the best overall choice for its excellent power-to-weight ratio, reliability, and ease of use. For those who prioritize trolling and durability, the Mercury 9.9 HP ProKicker is a strong runner-up, though it is heavier and more expensive.
