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A portable powerhouse.

The BF15 and BF20 are as convenient as you can get. At just 104 pounds, they are among the lightest in their class. Yet they‘re all Honda DNA: quiet, reliable, fuel efficient, and loaded with features.

Like the highest output charging system in their class, giving you plenty of power for all your electronics, even when trolling.

Or large displacement for a powerful performance. Choose the BFP Power Thrust design for even more boost, with 60% more thrust in reverse and 15% more in forward.

Add in easy one hand starting, shallow water drive, power tilt, and much more, and you’ve got the ideal combination of power and portability.

Quiet & Smooth Performance

Large Displacement - better performance

At 21.4 cubic inches, the BF15 and 20 have one of the largest displacements in its class. Along with the long-stroke design, this provides optimum torque throughout the RPM range.

PGM Ignition

A reliable microprocessor accurately controls ignition timing during start-up and across the entire RPM range, providing optimum overall performance.

Shallow Water Drive

An innovative shallow water drive feature lets you tilt the motor up, allowing you to easily operate in shallow areas. Shallow water drive greatly reduces the risk of engine damage.

3 Stage Carburetion - better fuel economy

Conventional 2-circuit carburetors go directly from a lean mixture at idle to a rich setting at full throttle. The BF15 and 20 add a third stage for better economy and smoother operation.

Power Tilt Available

Conveniently allows user to tilt the unit out of the water. At low speeds acts like a power shallow-water-drive device, permitting access to the shallow water areas.

Power Thrust for Added Performance

Optional Power Thrust Design - better performance for heavy loads

The BF15 and 20 are available with an optional Power Thrust design (BFP models). The 10" x 7 5/8" Power Thrust 4-blade propeller creates 60% more thrust in reverse and 15% more in forward. The result? Improved maneuverability and performance.

Reverse Exhaust Relief for increased manueverability

The exhaust relief feature creates more power in reverse by minimizing cavitation around the propeller blades. The exhaust relief is located above the cavitation plate, allowing the prop to run in clean, exhaust-free water.

Legendary Reliability

True 5 Warranty

Honda's True 5 Warranty is the best in the business. This transferable, non-declining warranty is the same on the first day as it is on the last.

Engine Alert System - Keeps you informed

The integrated warning system protects the engine from severe damage due to low oil, over-revving and overheating.

4-Front Corrosion Protection System - Fights the elements

A patented, "Double Sealed" multi-layered paint process. Sacrificial anodes and stainless steel technology, along with waterproof connectors, all enhance corrosion protection.

Easy Starting

Easy One Hand Starting

A built-in decompression release and digital CDI system set the BF15 and 20’s ignition timing. This reduces the effort required to pull-start the engine by hand by 40%!

Auto Start Enrichment - easy starts

Auto Start Enrichment acts as an automatic choke. Just like a fuel injection system, it automatically adjusts the air/fuel mixture for quick, easy starting and warm-up.

Easy Ownership

Lightweight Design

The lightest 4-stroke model in their class, the BF15 and 20 are easy to transport and convenient to mount.

Integrated Carrying Handle - easier transport

A integrated carrying handle makes transporting the engine a breeze. The convenient, foldaway carry handle is situated at the exact top/bottom balance point of the engine. This means the engine carries more easily in a level position.

High Output Charging

The BF15 and 20 have the largest alternator in their class. These motors generate 12 Amps at only 3000 RPM. This helps to maintain battery charge and keep electronics running at trolling speeds.

Pendulum Mount System - Smooth operation

Honda's exclusive triangulated rubber mount system absorbs vibration and provides unbelievably smooth operation.

Convenient Controls

Convenient, Up Front Tiller Controls

A convenient front-mounted shift lever allows fingertip shifting. The Twist Grip Throttle & Tensioner minimize driver fatigue.

Longer Tiller Handle - better control

A convenient longer tiller handle improves control and reduced steering effort. The extended handle is made of a lightweight composite, increasing its durability while decreasing the motor's weight.

EZ Steer Friction Control

A unique lever design allows you to precisely adjust steering tension for improved control and comfort.


Engine BF15 BF20
Type 4-Stroke SOHC 2 Cylinder/4 Valves 4-Stroke SOHC 2 Cylinder/4 Valves
Displacement 350 cc (21.4 cubic inches) 350 cc (21.5 cubic inches)
Bore & Stroke 59 mm x 64 mm (2.3 x 2.5 inches) 59 mm x 64 mm (2.3 x 2.5 inches)
Full Throttle RPM Range 4,500-5,500 RPM 5,000-6,000 RPM
Rated Power 15 HP @ 5,000 RPM 20 HP @ 5,500 RPM
Cooling System Water Cooled Water Cooled
Fuel Delivery 1 Carburetor 1 Carburetor
Ignition System PGM-IG PGM-IG
Starting System Electric/Recoil Electric/Recoil
Exhaust Through Hub Through Hub
Lubrication Wet Sump Wet Sump
Trim Range 4 Stage 8°-12°-16°-20° 4 Stage 8°-12°-16°-20°
Tilt Range 72° 72°
Drive BF15 BF20
Gear Ratio 2.08:1 2.08:1
Gear Shift F-N-R F-N-R
Equipment BF15 BF20
Alternator with voltage regulator (Electric Start) 12-Amp (148 watt) 12-Amp (151 watt)
Alternator with voltage regulator (Manual Start) 6-Amp (76 watt) 6-Amp (76 watt)
Propeller 4-Blade Aluminum 4-Blade Aluminum
Diameter x Pitch, Standard 9¼ x 10 inches 9¼ x 10 inches
Diameter x Pitch, Power Thrust 10 x 7? inches 10 x 7? inches
Power Tilt Available Available
Oil Pressure Alert Standard Standard
Temperature Alert Standard Standard
Rev-Limiter Standard Standard
Dimensions BF15 BF20
Overall Width 350 mm/13.8 inches 350 mm/13.8 inches
Transom Height BF15 BF20
S Type 381 mm/15 inches 381 mm/15 inches
L Type 508 mm/20 inches 508 mm/20 inches
X Type 635 mm/25 inches NA
Dry Weight BF15 BF20
S-Type 47 kg/104 lbs. 47 kg/104 lbs.
L-Type 50 kg/110 lbs. 50 kg/110 lbs.
X-Type 52 kg/115 lbs. NA

Performance Tests

Boat Length Engine HP Prop
YOUNG KANG - YDX 380 12' - 6" BF15D 15 HONDA 9 1/2 X 9 1/2 X 3
Grand G340 10' 10" BF20 20 Aluminum 9.25 X 9 X 4

Owner's Manuals

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