Honda 20 HP Steering Electric Start Trim and Tilt Short Shaft Outboard Motor

The Honda BF 20 DK2 SRTU is a 4-stroke outboard marine engine designed for small fiberglass, aluminum, or inflatable boats requiring a short shaft, ranging from 2.5–4.5 meters, with 20 HP / 14.7 kW and a 350 cc 2-Cylinder OHC Carbureted engine. The BF 20 DK2 SRTU with its 350 cc 2-cylinder OHC engine offers smoother power delivery and less vibration compared to single-cylinder alternatives.

BF 20 DK2 SRTU Engine Technology and Key Advantages

The 2-cylinder OHC structure reduces vibration with a more frequent firing interval and balances power output. With a portable weight of 57 KG, it provides a balanced power-to-weight ratio in this power class.

• 2-Cylinder OHC Carbureted Engine (350 cc, 2 Cylinders): The 2-cylinder OHC structure reduces vibration with a more frequent firing interval and balances power output.
• Short Shaft (381 mm (15")): Perfect fit for small fiberglass transom heights — propeller operates at optimum depth.
• F–N–R Gear System: Forward, neutral, and reverse — full control in tight spaces, docking, and marina maneuvers.
• Electric Start: Instant activation with a key or button — comfortable and quick starting.
• Electric Trim and Tilt: Adjust trim angle with a button — optimizes fuel efficiency and speed during cruising; allows complete lifting of the engine with tilt.
• 12 Liter Internal Tank: Sufficient capacity for mid-range routes; option for external tank connection for long voyages.

Short Shaft — Which Boat Type is it Suitable For?

The short shaft (381 mm (15")) is suitable for the majority of standard inflatable boats, small fiberglass, and aluminum boat transom heights. It should not be confused with the long shaft model — an incorrect choice will place the propeller at the wrong depth.

Technical Specifications

Who is This Engine For?

• 2.5–4.5 meter inflatable boat and small boat primary engine: 2-cylinder balanced power and low vibration
• Fishing and lake use: Quiet operation of a 4-stroke engine for undisturbed cruising
• Sailboat auxiliary engine: Power for marina maneuvers and short passages
• Spare engine: Portable option as an additional safety solution for large 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. Fresh water rinsing is mandatory after every use in saltwater.

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 the optimized range for 2.5–4.5 meter inflatable boats and small aluminum boats. The 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 a more frequent firing interval. This difference is particularly noticeable at full throttle positions and against headwinds. The 4-stroke structure, which does not require oil-gasoline mixture, provides low maintenance costs.

How does the electric starting system work?

Electric starting instantly engages the engine with a turn of the key. It requires a battery connection.

Which boat and inflatable boat brands is the BF 20 DK2 SRTU compatible with?

Honda outboard engines are compatible with the 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 transom height of 381 mm (15") 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

Is This the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's together confirm the suitability of the Honda BF 20 DK2 SRTU engine for your boat and the correct shaft selection.