Choosing a reliable outboard motor for a small inflatable boat or light metal boat often leads water transport owners to an 8 horsepower model. Honda BF8 It has traditionally been a leader in the field of technology because of its reputation for creating virtually unkillable machinery, which combines efficiency, low noise and amazing traction, making it an ideal choice for fishing, cruising and household water needs.
Why has this model been so popular with water-powered motorists for so many years? four-stroke engineIt's a gas-free, oil-to-gasoline system, and unlike its two-stroke competitors, it runs on pure gasoline, which makes it much easier to operate and reduces emissions, and if you're looking for a balance between power and weight, it's a great solution.
However, as with any technique, Honda BF8 In this article, we will discuss the specifications, the actual fuel consumption, the design nuances, and compare this model with popular analogues, you will get comprehensive information that will help you make an informed decision about buying or upgrading your water transport.
Technical specifications and design features
The engine is based on a reliable four-stroke engine With an overhead valve (OHV) that provides high fuel efficiency, the cylinder capacity is 222 cubic centimeters, which at 8 horsepower allows you to develop a solid traction even on heavy boats, the ignition system is electronic, eliminating the need for adjustment of gaps and ensures stable start in all weather conditions.
The main feature is the cooling system. Honda BF8 It uses a forced water cooling with a thermostat, which allows the engine to quickly reach the operating temperature and maintain it even when working at low speeds for long periods of time, which is especially important for fishermen who often move around the reservoir at navigable speeds. The weight of the motor as standard is about 38 kilograms, making it easy enough to carry by one person, but also massive enough to ensure stability on the transom.
⚠️ Warning: Despite the high Protection rating, do not allow the engine to operate without water supply (on land) for more than 10-15 seconds, as this can lead to overheating and deformation of the impeller pump.
The engine transmission includes the front and back, and the neutral, the switching is mechanical, with a clear fixation of positions. single-cylinderIt's easy to maintain and durable, and the materials used in the fabrication are resistant to corrosion, which is critical for use in salt water.
Features of the lubrication system
The Honda BF8 engine uses a splashing lubrication system with a forced oil supply to the most loaded units. Carter holds 0.6 liters of SAE 10W-30 or 10W-40 engine oil. Oil replacement is required every 100 motor hours or once a season, which significantly extends the engine life compared to two-stroke counterparts.
Fuel consumption and efficiency of operation
One of the main advantages of Honda's four-stroke engines is their efficiency. fuel This is significantly less than two-stroke engines of similar power, which can consume up to 3 liters of mixture per hour, and the savings are especially noticeable on long crossings or multi-day fishing expeditions.
Real consumption is directly dependent on the weight of the boat, the number of passengers and the conditions on the water (wind, current). When idling, the engine consumes minimal amount of gasoline, which allows you to drift or maneuver for a long time in search of fish places without fear of being without fuel. Using pure gasoline AI-92 or AI-95 simplifies logistics: you do not need to carry cans of oil and mix the proportions.
- 🚤 The average flow rate for full gas is about 2.2 liters per hour.
- ⛽ The power reserve on a full tank (standard 12 liters) can reach 100-120 kilometers at moderate speed.
- 💰 The cost of an hour of operation is significantly lower due to the absence of the need to buy expensive two-stroke oil.
To understand costs accurately, let's look at the approximate metrics depending on the mode of operation. Honda BF8.
| Mode of work | Engine rotations | Fuel consumption (L/h) | Speed (km/h)* |
|---|---|---|---|
| Idle move | 800-1000 rpm | 0.5 - 0.7 | 4-5 |
| trolling | 2500-3000 rpm | 1.2 - 1.5 | 8-10 |
| Cruising move (75%) | 4500-5000 rpm | 1.8 - 2.0 | 25-28 |
| Full gas (100%) | 5500-6000 rpm | 2.2 - 2.4 | 30-33 |
* Speed is indicated approximately for PVC boats with a length of 3.2-3.6 meters with one passenger. As can be seen from the table, the most economical mode is trolling, which makes this motor popular among spinners.
tiller control and ergonomics
Management Honda BF8 It is done by means of a dialwood-mounted humming device, designed to minimize operator fatigue even after hours of continuous operation, and all the main controls, such as gas, gear shifting and the stop button, are in close proximity to the driver's hand.
tiller is equipped with a system gas-dropping When you switch from forward to neutral or reverse, which prevents the boat from jerking abruptly and protects the transmission from impact loads, the gearshift mechanism has clear locks, which prevents the rear gear from being activated inadvertently at full speed.
⚠️ Warning: Before switching direction (from front to rear), be sure to drop the gas to a minimum. Sharp turn on the reverse at high revs can damage the gear gears of the gear gear gear.
Also on the rompel is the emergency stop button (stop button) and, in some versions, the oil pressure indicator. The ergonomics of the handle allows you to confidently hold the motor with one hand, leaving the second free to control the fishing rod or mooring. The smoothness of the romp is ensured by high-quality bearings and lubrication laid down in the factory.
To reduce vibration on the tiller during a long transition, you can use special antivibration pads or gloves, which will preserve the sensitivity of the hands.
Comparison with competitors: Yamaha and Tohatsu
In the market of outboard motors with a capacity of 8 hp Honda BF8 There are serious competitors, especially those Yamaha F8 and Tohatsu MFS8Yamaha is traditionally known for its technological and lightweight, often using an electronic injection system or advanced carburetors. Tohatsu is also known as a "workhorse" with a simple and reliable design, often copied by other Chinese manufacturers.
Honda beats competitors in terms of noise and vibration, the engine is so quiet that at idle speeds its sound is barely discernible against the background of water splashing. In addition, Honda's cooling system often performs better at long-term operation at low rpm, which is critical for trolling. However, Yamaha can offer slightly higher torque at the bottom, which is important for heavy boats.
In terms of repairability, all three brands have a strong network of services in major cities, but Honda often benefits from the availability of original parts in the regions. The cost of maintenance for all three brands is comparable, although consumables (oil, filters) from Honda can cost slightly more because of branded packaging.
- 🏆 Honda: Leader in silence and quality of assembly.
- ⚓ Yamaha: Best traction at low speeds and light weight.
- 🔧 Tohatsu: Simplicity of design and high reliability in harsh conditions.
The choice between these models often comes down to personal preferences and availability in your area. If you prioritize comfort and lack of vibration, Honda will be the best choice. If maximum traction is important for a heavy boat, you should take a look at Yamaha.
The Honda BF8 wins out from competitors with minimal vibration and noise levels, making it ideal for fishing, where silence plays a crucial role.
Maintenance regulations (TO)
Durability four-stroke Honda has developed a clear set of regulations to be followed to maintain the engine warranty and life, primary maintenance is carried out after the first 20 hours or after a month of operation, whichever comes first.
The main job list includes replacing engine oil, checking spark plugs, cleaning the air filter and lubricating the rotation points. The oil in the engine is recommended to be changed every 100 hours or once a year, even if the mileage was small, which is due to the fact that the oil oxidizes and loses its properties over time.
☑️ Seasonal TO checklist
Special attention should be paid to the cooling system. Check the control hole for the launching regularly. If the jet is weak or intermittent, perhaps the impeller pump is worn out or there is a clog. shaft-slit special lubrication so that the screw does not "stick" to the shaft.
The spark plug should be twisted and inspected every 100 hours. Black carbon indicates a rich mixture, white indicates a poor one. Normally, the electrode should be light brown. Honda BF8 Usually used candles NGK or Denso with a specific potassium number specified in the manual.
Typical malfunctions and ways to eliminate them
Despite its high reliability, Honda BF8 It's not immune to malfunctions, especially when operating infringements, and one of the most common problems is difficulty starting, most often due to the use of low-quality gasoline, which stagnates in the carburetor and forms resinous deposits.
Another common issue is overheating. If you notice that there is no water coming out of the control hole or steam coming out, immediately turn off the engine. The reason may be a clogged water intake (grass, bag) or wear of the impeller of the water pump.
⚠️ Warning: If the engine is dead and not starting, do not try to turn the starter (if there is an electric starter) indefinitely. Check for spark and fuel supply, so as not to fill the candles and discharge the battery.
Problems with transmissions (difficulty switching or knocking out the gear) may indicate the need to adjust the switching cable or wear of friction discs. In rare cases, there is a leak of the diewood glands, which leads to water entering the gearbox. You can determine this by the color of the oil in the gearbox - it becomes emulsive (the color of coffee with milk).
What do I do if the engine is troubling?
If the engine is not working evenly, you hear the clapping, first check the candles, replace them with new ones if you have doubts, the second step is checking the fuel filter and purging the carburetor, often solved by simply replacing the fuel hose that could have stratified inside.
Owner reviews and final recommendations
Analysis of the reviews of real owners shows that Honda BF8 Many users have noted that the engine has been running for years without major repairs, requiring only a change of oil and candles, and fishermen praise it for its quiet motion, which does not scare the fish, and the ability to troll for long periods without risking stalling.
Among the disadvantages, the most often called price - Honda is traditionally more expensive than many competitors. Also, some users note that 8 horsepower may not be enough for heavy metal boats with a full load, where you would like to have a power reserve of 9.9 hp. However, for PVC boats up to 3.6 meters in length, this is the "golden mean".
In conclusion, Honda BF8 It's a great choice for those looking for reliability, economy and comfort, a motor for people who value their time and don't want to spend the weekend repairing their machines, and if the budget allows, buying a Honda will be an investment in years of enjoyable water.
- ✅ Ideal for PVC boats with a length of 3.0 - 3.8 meters.
- ✅ It is great for fishing because of the low noise level.
- ✅ High liquidity in the secondary market (easy to sell used).
When you choose this engine, you choose proven quality and Japanese engineering. Honda BF8 It will serve you faithfully for many seasons, giving only positive emotions from communicating with water.
Which gasoline is better to pour in the Honda BF8: AI-92 or AI-95?
The manufacturer allows the use of gasoline with an octane number of not less than 90 (according to the research method). AI-95 It's a validated refueling station, because it's less impurities and less prone to detonation, and it's okay to use the AI-92, but it can reduce power slightly and increase consumption, and it's important to avoid leaded gasoline and expired fuel.
Do I need to drain gasoline from the carburetor for the winter?
If you leave the gasoline in the float chamber of the carburetor for long-term storage (more than 1 month), the light fractions will evaporate, and the heavy ones will form a resinous plaque that will clog the chicklers. Before wintering, exhaust the fuel from the tank until the engine stops or use a special fuel preservative if the engine will be stored for less than a month.
Can I transport a Honda BF8 on the side?
Honda four-stroke engines can be transported in almost any position (on any side), but not upside down (dadewood up). However, to avoid leaking oil from the crankcase into the cylinders, before long transportation or storage in a non-standard position, it is better to close the fuel crane and let the engine produce the remaining fuel in the carburetor, stalling on its own.