Ready to take you to great places. Like the head of the class.
The BF40 and BF50 are an outstanding combination of Honda’s legendary four-stroke engineering and our latest outboard innovations. The result? The lightest, most compact engines in their class. And they’re loaded with the features you want. Perfect for pontoons, inflatables and fishing boats from bass, pike, and walleye to flats and bay boats.
Lean Burn Control
Lightest in class
Most amps in class
Type 4-Stroke SOHC; 3 Cylinders / 6 Valves
Displacement 808 cc / 49.4 cubic in.
Bore & Stroke 70 mm x 70 mm (2.76 x 2.76 in.)
Full Throttle RPM Range 5,500-6,000 RPM
Propshaft Rated Horsepower (HP) 50 hp @ 5,750 RPM
Cooling System Water Cooled
Fuel Delivery Programmed Electronic Fuel Injection (PGM-FI)
Recommended Fuel Unleaded Gas. (Min. Pump Octane 86)
Ignition System MicroComputer Programmed
Starting System Electric
Exhaust Through Prop Hub
Lubrication Pressure Lubrication (Trochoid pump)
Recommended Oil SAE 5W30 API service classification SJ or later
Oil Capacity 2.10 L (1.85 Imp. qt) with oil filter repl.
Trim Range -4° to +12°
Tilt Range 63°
Steering Angle 35°
DIMENSIONS / Overall Width
L Type 508 mm
X Type 635 mm
Alternator with voltage regulator (Electric Start) 22-Amp (275 watt)
Battery Charging Power 17 Amps
Power Tilt NA
Power Trim & Tilt Available
Gas Assisted Tilt Available
Oil Pressure Alert Standard
Temperature Alert Standard
Speedometer Pickup Standard