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2006 Honda BF20

It's all about power and at 21.4 cubic inches, the Honda BF20 marine outboard is the power king, with the largest displacement of any 20 HP outboard in the industry-and it's also the lightest engine in its class.

The high-torque 20 horsepower, 4-stroke engine also features a 12 AMP alternator to keep the battery charged at any speed. And it's one of the most convenient outboards on the market, with EZ steer friction control that lets you adjust steering tension for comfort and better handling. And the convenience doesn't stop there.


BuilderHonda Marine
Type4-Stroke OHC Twin Cylinders
Displacement350 cc (21.4 cubic inches)
Bore & Stroke59 x 64 mm (2.30 x 2.51 inches)
Full Throttle RPM Range5000-6600 RPM
HP Rating @ Propshaft20HP @ 5500 RPM
Induction ScavengingSOHC
Valves per Cylinder2
Fuel DeliverySingle Venturi
Ignition SystemProgrammed Ignition System
Starting SystemManual/Electric
LubricationWet Sump
Cooling SystemWater Cooled
AlternatorElectric 12 Amps (148 Watts) Manual 6 Amps (76 Watts)
Trim Range4 Stage 8-12-16-20
Tilt Range72
Gear Ratio2.08:1 (13/27)
Gear ShiftF-N-R
Propeller4 Blade Aluminum 91/4 x 8 inches
Recommended Transom Height(S) 381 mm/15 inches
Dry Weight(S/L) 46/49 kg - 101/108 lbs.


4-Stroke Design
World-renowned Honda quality combines proven reliability and superior fuel efficiency, with no oil mixing.

Power Thrust Design (BFP)
The 10" x 75/8" 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
Additional exhaust relief above the cavitation plate allows the prop to run in clean, exhaust-free water, producing more thrust.

Large Displacement
At 21.4 cubic inches the 20HP has the largest displacement in its class! Along with the long-stroke design, this provides optimum torque throughout the RPM range.

Lightweight Design
The 20HP is the lightest 4-stroke model in its class, allowing easy transport and convenient mounting to the hull.

Easy One Hand Starting
Working together, a built-in decompression release and Digital CDI system set the ignition timing during start-up. Only 60% of normal the effort is required to pull-start the engine by hand!

Power Tilt
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.

High Output Charging
Largest alternator in its class! 12 Amps at only 3000 RPM maintain the battery charge and keep electronics going, even at trolling speeds.

Auto Start Enrichment
On electric start models, automatically adjusts the air-fuel mixture for quick, easy starting and warm-up.

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

Integrated Carring Handle
A convenient, foldaway carry handle is situated at the exact top/bottom balance point of the engine, so that the engine carries more easily in a level position.

3 Stage Carburetion
While conventional 2-circuit carburetors go directly from a lean mixture at idle to a rich setting at full throttle, the BF15/20 adds a third middle stage for better economy and smoother, stronger operation.

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

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

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

Fresh Water Flushport
Flushes debris and saltwater out of the engine, extending the life of the outboard.

Longer Tiller Handle
The 20 HPs have convenient longer tiller handles for increased control and reduced steering effort. The extended handle is made of a new lightweight composite for increased durability and weight reduction.

Up Front Tiller Controls
The convenient Forward Mount Shift Lever allows fingertip shifting. Twist Grip Throttle & Tensioner allows for superior throttle friction control, minimizing driver fatigue.

EZ Steer Friction Control
Unique lever design allows operator to precisely adjust steering tension for improved control and comfort.

Shallow Water Drive
Allows you to run in shallow water and greatly reduces the risk of engine damage.

Positive Lubrication
A crankshaft-driven, automotive-style trochoid oil pump ensures critical engine component long-term durability.

Ultra Low 3 Star Carb Emissions
Environmentally friendly technology.

ID: 964

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