Honda's 20HP is an outstanding choice for aluminum fishing boats, inflatables, sailboats, or as a "kicker" for larger fishing boats. Outstanding, because it has the largest displacement in it's class, as well as the strongest torque and highest battery charging power. And because it's a Honda, you can expect long term durability and clean, quiet operation.
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ENGINE SPECIFICATION |
| Type |
4-Stroke OHC Twin Cylinders |
| Displacement |
350 cc (21.4 cubic inches) |
| Bore & Stroke |
59 x 64 mm (2.30 x 2.51 inches) |
| Full Throttle RPM Range |
5000-6600 RPM |
| HP Rating @ Propshaft |
20HP @ 5500 RPM |
| Induction Scavenging |
SOHC |
| Valves per Cylinder |
2 |
| Fuel Delivery |
Single Venturi |
| Ignition System |
Programmed Ignition System |
| Starting System |
Manual/Electric |
| Lubrication |
Wet Sump |
| Cooling System |
Water Cooled |
| Alternator |
Electric 12 Amps (148 Watts) Manual 6 Amps (76 Watts) |
| Trim Range |
4 Stage 8°-12°-16°-20° |
| Tilt Range |
72° |
| Gear Ratio |
2.08:1 (13/27) |
| Gear Shift |
F-N-R |
| Propeller BF |
4 Blade Aluminum 9 1/4 x 8 inches |
| Propeller BFP |
4 Blade Aluminum 10 x 7 5/8 inches |
| Recommended Transom Height |
(S) 381 mm/15 inches
(L) 508 mm/20 inches |
| Dry Weight Tiller(Man) |
(S/L) 46/49 kg - 101/108 lbs. |
| Dry Weight Tiller (Elec) |
(S/L) 49.5/52.5 kg - 109/116 lbs. |
| Dry Weight(Power Tilt) |
(S/L) 58/59.5 kg - 128/131 lbs. |
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ENGINE FEATURES
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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 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
Additional exhaust relief above the cavitation plate produces more thrust by allowing the prop to run in clean, exhaust-free water. |
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 lightest 4-stroke model in its class, the BF20 is easy to transport and convenient to mount. |
Easy One Hand Starting
Working together, a built-in decompression release and digital CDI system set the ignition timing during start-up. Greatly reduces the effort 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
The BF20 provides 2 Amps at 1000 RPM and an amazing 12 amps at only 3000 RPM to maintain the battery charge or keep electronics going even at trolling speeds. |
Auto Start Enrichment (ASE)
Standard on electric start models, Auto Start Enrichment automatically adjusts the air/fuel mixture for quick and easy starts and warm-up. |
Pendulum Mount System
Honda's exclusive triangulated rubber mount system absorbs vibration and provides unbelievably smooth operation. |
Integrated Carrying Handle
Situated at the exact top/bottom balance point of the engine, the BF20’s integrated carrying handle make transporting it a breeze. |
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 stage for better economy and smoother 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
Made of a new lightweight composite, the BF20’s longer tiller handle improves control while reducing steering effort. |
Up Front Tiller Controls
A convenient front-mounted shift lever allows fingertip shifting while a Twist Grip Throttle & Tensioner minimize 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 long-term durability of critical engine components. |
Ultra Low 3 Star Carb Emissions
Environmentally friendly technology. |
