Honda

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Honda BF20

The BF15 and BF20 are as convenient as you can get.

All Honda outboards
Honda BF20

Portable

BF20

Power
20 hp
Configuration
4-Stroke SOHC 2 Cylinder/4 Valves
Displacement
350 cc
Weight
104 lb
AuthorizedHondadealer
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About this engine

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.

Key features

  • Large Displacement - better performance: At 21.4 cubic inches, the BF15 and 20 have one of the largest displacements in its class.
  • 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.
  • 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.
  • Power Tilt Available: Conveniently allows user to tilt the unit out of the water.
  • Optional Power Thrust Design - better performance for heavy loads: The BF15 and 20 are available with an optional Power Thrust design (BFP models).
  • Reverse Exhaust Relief for increased manueverability: The exhaust relief feature creates more power in reverse by minimizing cavitation around the propeller blades.
  • True 5 Warranty: Honda's True 5 Warranty is the best in the business.
  • Engine Alert System - Keeps you informed: The integrated warning system protects the engine from severe damage due to low oil, over-revving and overheating.
  • Honda Corrosion Protection: Your Honda can continue to look and perform like new, thanks to our corrosion protection system.
  • Easy One Hand Starting: A built-in decompression release and digital CDI system set the BF15 and 20’s ignition timing.
  • Auto Start Enrichment - easy starts: Auto Start Enrichment acts as an automatic choke.
  • 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.
  • High Output Charging: The BF15 and 20 have the largest alternator in their class.
  • Pendulum Mount System - Smooth operation: Honda's exclusive triangulated rubber mount system absorbs vibration and provides unbelievably smooth operation.
  • Convenient, Up Front Tiller Controls: A convenient front-mounted shift lever allows fingertip shifting.
  • Longer Tiller Handle - better control: A convenient longer tiller handle improves control and reduced steering effort.
  • EZ Steer Friction Control: A unique lever design allows you to precisely adjust steering tension for improved control and comfort.

Full specifications

Type
4-Stroke SOHC 2 Cylinder/4 Valves
Displacement
350 cc (21.5 cubic inches)
Bore & Stroke
59 mm x 64 mm (2.3 x 2.5 inches)
Full Throttle RPM Range
5,000-6,000 RPM
Rated Power
20 HP @ 5,500 RPM
Cooling System
Water Cooled
Fuel Delivery
1 Carburetor
Ignition System
PGM-IG
Starting System
Electric/Recoil
Exhaust
Through Hub
Lubrication
Wet Sump
Trim Range
4 Stage 8°-12°-16°-20°
Tilt Range
72°
Gear Ratio
2.08:1
Gear Shift
F-N-R
Alternator with voltage regulator (Electric Start)
12-Amp (151 watt)
Alternator with voltage regulator (Manual Start)
6-Amp (76 watt)
Propeller
4-Blade Aluminum
Diameter x Pitch, Standard
9¼ x 10 inches
Diameter x Pitch, Power Thrust
10 x 7? inches
Power Tilt
Available
Oil Pressure Alert
Standard
Temperature Alert
Standard
Rev-Limiter
Standard
Recreational
5 years
Commercial/Rental
2 years
Optional Extended
Up to 36 months Learn More
Overall Width
350 mm/13.8 inches
S Type
381 mm/15 inches
L Type
508 mm/20 inches
X Type
NA
S-Type
47 kg/104 lbs.
L-Type
50 kg/110 lbs.
X-Type
NA