Honda 20 HP Electric Start Power Trim and Tilt Long Shaft Outboard Motor

The Honda BF 20 DK3 LHTU is a 4-stroke outboard marine engine designed for small fiberglass, aluminum, or inflatable boats (2.5–4.5 meters) that require a long shaft. It features a 20 HP / 14.7 kW, 350 cc, 2-cylinder OHC carburetor engine. The BF 20 DK3 LHTU, with its 350 cc, 2-cylinder OHC engine, offers smoother power delivery and less vibration compared to single-cylinder alternatives.

BF 20 DK3 LHTU Engine Technology and Key Advantages

The 2-cylinder OHC structure reduces vibration and balances power output with more frequent ignition. With a portable weight of 58.5 KG, it provides a balanced power-to-weight ratio in this power class.

• 2-Cylinder OHC Carburetor Engine (350 cc, 2-Cylinder): The 2-cylinder OHC structure reduces vibration and balances power output with more frequent ignition.
• Long Shaft (508 mm (20")): Perfect fit for small fiberglass transoms — propeller operates at optimum depth.
• F–N–R Gear System: Forward, neutral, and reverse — full control during maneuvers in tight spaces, at docks, and in marinas.
• Electric Start with Manual Backup: Easy electric starting with low battery consumption; more reliable than a fully battery-dependent system.
• Electric Trim and Tilt: Adjust trim angle with a button — optimizes fuel efficiency and speed during cruising; allows motor to be fully raised with tilt.
• 12 Liter Internal Fuel Tank: Sufficient capacity for medium-range routes; option for external tank connection on longer journeys.

Long Shaft — Which Boat Type Is It Suitable For?

The long shaft (508 mm (20")) is suitable for the vast majority of inflatable boats, aluminum fishing boats, and small fiberglass boat models. For boats with a transom height of 381 mm, a short shaft model should be preferred.

Technical Specifications

Who Is This Engine For?

• Primary engine for 2.5–4.5 meter inflatable boats and small boats: 2-cylinder provides balanced power and low vibration.
• Fishing and lake use: Quiet 4-stroke operation for cruising without scaring fish.
• Sailboat auxiliary engine: Power for marina maneuvers and short passages.
• Backup engine: Portable option as an additional safety solution for larger boats.

Maintenance and Longevity

4-stroke Honda engines run problem-free for many years with regular oil changes and end-of-season maintenance protocols. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. After every use in saltwater, freshwater flushing is mandatory.

Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Honda Marine Spare Parts

Frequently Asked Questions

What boat size does the Honda 20 HP engine fit?

20 HP power is an optimized range for 2.5–4.5 meter inflatable boats and small aluminum boats. Most efficient performance is achieved on boats with a total weight between 200–400 kg.

How much better is a 2-cylinder OHC engine compared to single-cylinder alternatives?

Two cylinders produce less vibration and smoother power output due to more frequent ignition. This difference is significantly noticeable, especially at full throttle and against the wind. The 4-stroke design, which does not require a oil-gasoline mixture, ensures low maintenance costs.

How does the electric start with manual backup system work?

The electric start system engages the starter motor with a turn of the key — battery load is lower compared to a fully electric system.

Which boat and inflatable boat brands is the BF 20 DK3 LHTU compatible with?

Honda outboard motors are compatible with the vast majority of Zodiac, Ribeye, Highfield, Bombard, Sea Eagle, and local brand inflatable boats thanks to their universal transom clamp system. The only criteria are your boat's 508 mm (20") transom height and the maximum engine power approved by the manufacturer. You can get compatibility confirmation from Clever Marin by sharing your boat model.

Related Products and Categories

• Honda Marine Outboard Motors
• Honda Marine Products
• Honda Marine Spare Parts
• 4-Stroke 2.5–30 HP Engines
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Engine Oil
• Anode

The Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's verify the suitability of the Honda BF 20 DK3 LHTU engine for your boat and the correct shaft selection together.