Finding a reliable and economical engine for a PVC boat often leads potential buyers to explore an offer from Japanese giant Yamaha. Yamaha engine 8 l with two-stroke price The two-stroke design of this capacity remains the benchmark for reliability and ease of maintenance, despite the tightening of environmental regulations around the world.
Today, on the market you can find both new units and mileage equipment, which significantly affects the final cost. Yamaha 8CMHS and its more modern counterparts 8CMH They've become legends among fishermen and hunters because of their ability to work at any speed and in any water, and understanding the pricing structure will help you not overpay for unnecessary options or, conversely, not buy an open marriage.
In this article, we will take a closer look at what the cost is, what factors affect the price in the current season, and what to look for when buying, and it is important to consider not only the price tag on the storefront, but also the costs of preparing for operation, including the purchase of oil and additional equipment.
Factors Affecting the Cost of the Motor
The price two-stroke Yamaha engine The 8 horsepower is not a fixed value and depends on a variety of market and technical factors: first of all, the value is determined by the exchange rate, as the equipment is imported, and any fluctuations in the financial markets are instantly reflected in the price tags in stores. In addition, logistics chains and customs duties also contribute to the final amount that the buyer sees.
The second important aspect is the specific engine modification. The base model may cost less than the long leg version or the electric starter, although in the 8 hp class, manual start is most common. CDI (electronic ignition) and forced lubrication also increases the value of the unit compared to the simplest carburetor analogues.
And we also have to remember the state of the art when it comes to the secondary market. overhaul Or with a reciprocating ring replaced, it's going to be evaluated differently than a grandfather-like specimen that's just sitting in the garage, and visual inspection and compression testing are mandatory steps that can lead to financial losses if you ignore it.
Seasonal impact on price
In winter, outboard motor prices often fall by 10-15% due to low demand. Buying in the off-season (October-March) allows you to save a significant amount, but the risk of buying equipment that has long stood without canning increases.
Review of popular models 8 hp
The 8 hp Yamaha engine lineup is made up of several generations, each with its own specifications. 8CMHSIt's a classic tool that has proven itself to be an unkillable working tool. two-stroke engine with manual launch, which is ideal for inflatable boats with a length of 3 to 4 meters.
More modern versions, such as Yamaha 8CMHThey've got an improved cylinder purging system, which has been a positive effect on efficiency and environmental friendliness. Although they're not very different from their predecessors, the refinements in the exhaust and carburet system make them more enjoyable to use. Many users have reported reduced vibration and smoother idle operation.
- 🔹 Yamaha 8CMHS A classic model with a short leg, time-tested and thousands of motor-hours.
- 🔹 Yamaha 8CMHL Long leg version designed for high transom boats or specific operating conditions.
- 🔹 Yamaha 8CMHO - Modification with a remote oil tank, which simplifies refueling and maintenance.
When choosing a specific model, it is important to pay attention to the current system. forced-lubricationUnlike older engines, where oil must be mixed with gasoline by hand, modern yamahas have a separate tank and pump that delivers lubrication in the right amount, which is not only convenient, but also prolongs the life of the engine, eliminating the risk of running on pure gasoline due to the forgetfulness of the owner.
Models with an index "S" (Short) have a short leg, and "L" (Long) - long. For standard PVC boats, a short leg is often enough, but always check the recommendations of the boat manufacturer.
Price analysis: new or used?
The question of cost is especially acute when the choice arises between a new engine from the cabin and a used unit from hand. Yamaha's new engine 8 hp in official dealerships is much more expensive, but the buyer receives a full warranty, pre-sales preparation and confidence that the equipment was not "drowned" or overheated by the previous owner.
The used-tech market offers more attractive prices, sometimes the difference can be as much as 50% or more, but buying used is always a lottery. You can find a great example that sells because of the change of the boat to a more powerful one, or you can buy an engine that requires immediate use. overhaul piston group.
| Status. | Average price (ruble) | Guarantee | Risks. |
|---|---|---|---|
| New (official) | 140 000 - 160 000 | 2 years | Minimum |
| B/w (perfect) | 70 000 - 90 000 | No. | Average. |
| B/w (requires T) | 40 000 - 60 000 | No. | High. |
| Chinese analogues | 60 000 - 80 000 | 1 year | Medium/High |
If you are considering buying from hand, be sure to require a compression check. two-stroke engine Yamaha 8 hp should be in the range of 9-11 atmospheres, and the spread between the cylinders should not exceed 1 atmosphere. The lack of compression or its strong difference indicates the occurrence of rings or wear of the cylinder.
When you buy a used motor, ask the seller to demonstrate the engine's performance on water or at least in a barrel. Dry work can kill the engine for even a few minutes, so normal salespeople always meet.
Technical specifications and fuel consumption
One of the main reasons for popularity Yamaha 8bhp. The two-stroke system, combined with a high-quality Japanese assembly, can achieve fuel consumption of about 2.5-3.5 liters per hour at full gas. At a cruising speed of about 3000-4000 revolutions, the flow rate is reduced to a comfortable 1.5-2 liters.
The engine is equipped with a system loop-blowThis is a good way to clean the exhaust gases efficiently and fill the cylinder with fresh air and fuel mixtures, which not only has a positive effect on power, but also on the stability of operation. The Mikuni or Keihin carburetor (depending on the year of manufacture) is reliable and easy to adjust.
- ⚓ Engine capacity: 147 cc. see
- ⚓ Number of cylinders: 2 (inline location).
- ⚓ Ignition systemCDI (electronic, contactless)
- ⚓ Weight.: about 20 kg (excluding fuel and oil), making it easy to carry.
The important parameter is the weight-to-power ratio. Yamaha engine 8 l It easily takes out an inflatable boat with two adult passengers and a plane cargo, making it a versatile solution for fishing on moderate rivers and for cruising on reservoirs.
⚠️ Attention: Use of low-quality gasoline (below the AI-92) or old, idle fuel for more than a month, can lead to the carburetor coking and failure of fuel hoses. Always use fresh gasoline and special additives-stabilizers for long-term storage.
Service and preparation for the season
Durability Yamaha 8CMHS It depends on the quality and regularity of maintenance. two-stroke motor The first thing to look at is the break-in if the engine is new, and it takes about 10 hours to run in, during which you can't put the full load on, and the oil-gasoline mix should be a little bit richer (a ratio of 1:25 instead of the standard 1:50).
Regular maintenance includes replacing spark plugs, checking and cleaning the carburetor, and lubricating all friction nodes. Special attention should be paid to the cooling system. Before each run, you need to visually check the control stream of water, which should confidently beat from the control hole.
☑️ Checklist of engine preparation for the season
To store the engine in the off-season, it needs to be preserved, which means draining the fuel from the float chamber, starting the engine before the system produces residues of gasoline and treating the internal cavities. preservative It is also recommended to remove the motor from the boat and store it in a vertical position in a dry room.
How to store your motor in winter
The best way to store it is in a heated room, and if you can't, cover the engine with a breathable case to avoid condensation, and remember to shut off the fuel faucet and extract the remaining fuel from the carburetor, otherwise the gas will dissipate and clog the jellybars in the winter.
Comparison with competitors and analogues
There are many alternatives on the market, such as Tohatsu, Suzuki or Chinese brands like Hidea and Sea-Pro. Tohatsu 8bhp Often called a direct competitor, and structurally they are very similar, but Yamaha traditionally wins in casting and availability of parts in the outback. Chinese counterparts can be cheaper by 20-30%, but their resource and build quality are often inferior to the original.
The main advantage of Yamaha is a well-developed service network and a huge number of compatible parts. Yamaha 8CMHS You can find it in almost any specialty store, whereas for rare Chinese brands, finding details can turn into a quest.
If we consider four-stroke analogues But for PVC boats, where every kilogram of weight is important, the two-stroke Yamaha 8bhp is often the leader in terms of performance.
⚠️ Warning: When installing the motor on a PVC boat, make sure that the engine power does not exceed the maximum allowed, specified in the boat data sheet. Exceeding power (for example, installing 9.9 hp on a boat at 8 hp) can lead to the destruction of the transom and the boat tipping over at full speed.
Frequently Asked Questions (FAQ)
What is the best gasoline to use for Yamaha 8 hp?
It is recommended to use unleaded gasoline brand AI-92 or AI-95. Higher octane will not hurt, but it does not make much sense, the main thing is the freshness of the fuel and the lack of water in the tank.
Do I need to dilute gasoline with oil in new models?
Yes, if you have a classic model without a separate oil tank (gasoline lubrication system), break-in ratio 1:25, for normal use 1:50. If the model with a separate oil tank (forced lubrication system), then the oil is poured into its tank and clean gasoline is poured into the tank.
How fast will the boat go with this engine?
Inflatable boat length of 3.2-3.6 meters with one adult will go for planing and will develop a speed of about 25-30 km / h With full load speed will drop to 15-20 km / h, but the movement will be confident.
Can I transport the motor on the side?
Transportation on the side or upside down can result in oil entering the combustion chamber and hydraulic shock at the next start, as well as fuel and oil leaking, transported strictly vertically or in a special bed.
Where to find the year of release marking?
The markings are usually on a plaque attached to the engine's lower unit (foot), and the last two letters of the model code often indicate the year of production, which can be deciphered in Yamaha's official catalogs.