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.
| 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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