4-5HP

Quiet, dependable, and ready for fun.

Everything you want in a portable outboard.
Easy starting. Lightweight. Fuel efficient. Quiet, low vibration performance. It’s easy to see why the all new BF4 and the newly redesigned BF5 are best in class.

Honda thought of everything. From comfortable carrying handles to a one touch stop switch to the longest run time in its class, this is a motor that redefines what a portable should be.

Category:
BF4 BF5
Type 4-Stroke OHV, 1 Cylinder/2 Valves 4-Stroke OHV, 1 Cylinder/2 Valves
Displacement 127 cc (7.8 cubic inches) 127 cc (7.8 cubic inches)
Bore & Stroke 60 mm x 45 mm (2.4 x 1.8 inches) 60 mm x 45 mm (2.4 x 1.8 inches)
Full Throttle RPM Range 4,500-5,500 RPM 4,500-5,500 RPM
Rated Power 4 HP @ 5,000 RPM 5 HP @ 5,500 RPM
Cooling System Water Cooled Water Cooled
Fuel Delivery 1 Carburetor 1 Carburetor
Internal Fuel Tank Capacity 1.5L (.39 gal.) 1.5L (.39 gal.)
Ignition System Digital CDI Digital CDI
Starting System Recoil Recoil
Exhaust Under Water, Above Propeller Under Water, Above Propeller
Lubrication Wet Sump Wet Sump
Trim Range 5-Stage 5°-9°-13°-17°-21° 5-Stage 5°-9°-13°-17°-21°
Tilt Range 70° 70°

Drive

BF4 BF5
Gear Ratio 2.08:1 2.08:1
Gear Shift F-N-R F-N-R
Alternator Opt. 6-Amp Opt. 6-Amp
Propeller 3-Blade Aluminum 3-Blade Aluminum
Diameter x Pitch 7⅞ x 7½ inches 7⅞ x 7½ inches
Available Optional Propellers 3.000 3.000
Oil Pressure Alert Standard Standard
Low Oil Pressure RPM Reduction Standard Standard
External Fuel Tank Connector NA Standard
Decompression Mechanism Standard Standard
One-Touch Stop Button Standard Standard

Dimensions

BF4 BF5
Overall Width 347 mm/13.7 in. 347 mm/13.66 in.

Transom Height

BF4 BF5
S Type 434 mm/15 in. 434 mm/15 in.
L Type 561 mm/20 in. 561 mm/20 in.

Dry Weight

BF4 BF5
S-Type 27 kg/60 lb. 27 kg/60 lb.
L-Type 27.5 kg/60.6 lb. 27.5 kg/60.6 lb.

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