The modern angler or owner of a small vessel often faces a difficult choice: overpay for famous brands with questionable originality or trust the time-tested Chinese factories that offer affordable and reliable units. Sharmax 9.8 outboard motorThe model, which has become a real bestseller in the domestic market due to the optimal combination of price and technical specifications, is an actual clone of the legendary Yamaha 9.9, offers the user the possibility of legally increasing power to 15 horsepower without serious structural interventions, making it a unique offer in its class.
The popularity of this power plant is due not only to its affordable cost, but also to its high maintainability, as well as the presence of a developed service network throughout the country. Buy a Sharmax 9.8 outboard motorPVC inflatable boats from 320 to 380 cm long or small metal "kazak" are looking for a versatile solution. The two-stroke design provides excellent traction at low revs, which is critical when trolling or driving against a strong current, and the compact dimensions allow you to easily transport the unit in the trunk of a passenger car.
However, before making a purchase, the potential owner should understand the nuances of modifications, since there are versions with different diewood diameters and types of control on the market. The wrong choice can lead to additional costs for the natation or replacing the lower unit, so a careful study of the technical specifications will be the first step to successful operation. In this article, we will discuss in detail all aspects of ownership of this unit, from hidden forcing capabilities to real fuel consumption.
Technical specifications and design features
At the heart of the unit is a two-stroke single-cylinder internal combustion engine with a displacement of 169 cubic centimeters. Despite the passport 9.8 horsepower, the design of the piston group is originally designed for higher loads, which is confirmed by the possibility of relatively simple improvements. The ignition system here is electronic, CDI, which guarantees a stable spark in all weather conditions and eliminates the need for adjustment of the gap, as in the old contact systems. Cooling is carried out by forced off-water through the pump located at the bottom of the lower unit.
An important design element is a lubrication system that works on the principle of mixing gasoline and oil in a ratio of 1:50 for new engines after running. Mikuni Or its licensed counterpart provides stable operation at idle speeds and a quick response to the opening of the throttle. The gearbox is made of a durable aluminum alloy, and the gear ratio of 2.08:1 allows you to effectively use the propeller thrust even when the boat is fully loaded.
⚠️ Note: When buying, be sure to check for a valid warranty and service book, as the market is oversaturated with counterfeit products issued as the original Sharmax. The absence of holograms on the case or blurred markings on the lower unit should be a signal to refuse the transaction.
The size and weight of the engine make it convenient for use on light inflatable boats. The dry weight is only 25.5 kg, which allows you to install and remove it without using lifting mechanisms to one person. The height of the lower unit varies depending on the modification (S is short, L is long), and choosing the right size is critical for the correct operation of the screw and lack of cavitation.
Comparison of versions: T9.8BMS and T9.8BML
When looking for information on the "buy a 9.8 Sharmax outboard motor," customers often come across abbreviations in the model name that indicate key differences in configuration. The main difference lies in the length of the lower unit and the type of control that directly affects compatibility with your boat. T9.8BMS It is equipped with a short lower unit (381 mm) and is designed for installation on the transoms of inflatable boats, where the distance from the cut of the transom to the keel is minimal.
In turn, modification T9.8BML It has a long lower unit (508 mm) and is more commonly used on metal boats or high inflatable models with a high-pressure inflatable keel. Mistake in choosing the length of a lower unit will either lead to constant air capture by the screw (if the lower unit is short) or to excessive water resistance and overheating (if the lower unit is too long and deep).
Gas control can also vary: the tiller control is the standard for most versions, but there are modifications with the possibility of connecting remote control. For anglers who prefer comfort, the availability of an electric rummulator or remote control becomes a decisive factor.
If you plan to increase the power of the engine in the future, choose a model with a thick lower unit and a carburetor from the 15-horsepower version - this will save money on replacing parts during forcing.
Testing procedure and first launch
The durability of any two-stroke engine is directly dependent on the quality of the break-in, and the Sharmax 9.8 is no exception. The manufacturer recommends that at least 10 liters of fuel mixture be produced before reaching full capacity. Ignoring this stage can lead to piston group bullies and loss of compression in the first hours of operation.
The process of running in a barrel of water or on a hanging device, ensuring a constant flow of water from the sea. The mixture for the first tanks should be richer in oil: a ratio of 1:25 is recommended (40 ml of oil per 1 liter of gasoline), while the standard working ratio is 1:50. The use of a quality two-stroke oil labeled TC-W3 is a prerequisite.
☑️ Checklist of proper breaking in
During the break-in, you must constantly monitor the temperature of the body and the presence of a jet of water coming out of the control hole. The absence of a jet even for a few seconds can lead to critical overheating. After the first 10 liters of the mixture are produced, it is recommended to replace the spark plug and check the tightening of all bolt joints, since the vibration of the new engine could weaken them.
⚠️ Warning: Never keep the motor in the barrel at full gas for a long time - the lack of forward movement and natural cooling by the incoming flow of water at high load is guaranteed to lead to overheating and jamming.
Power secret: increase to 15 hp
One of the main reasons why many people decide Buy a Sharmax 9.8 outboard motorThe engine is structurally almost identical to the 15-horsepower version, and the difference often lies only in the presence of a restrictive washer in the carburetor or software constraints (although in carburetor versions it is a mechanical throttle).
Modernizations usually require removing the carburetor and removing the restrictive plate that prevents the throttle from opening completely. In some cases, it may be necessary to replace the carburetor jellyplates with more productive ones to ensure the right mixture at high revs. It is important to understand that after such an upgrade, the engine is officially removed from the warranty, and all risks are assumed by the owner.
The effect of scattering on the resource of the motor
Increasing power to 15 hp on the 9.8 engine is not an extreme load, since the piston group initially has a margin of safety. However, operation at the limit requires more frequent replacement of candles and the use of only high-octane gasoline (AI-95).
After increasing power, it is recommended to reconfigure the carburetor, adjust the quality of the mixture at idle and maximum revs. A properly tuned 15-horsepower engine should give a confident maximum speed and quickly bring the boat to plane even with two passengers on board, the screw may require a replacement with a model with a large step to realize the increased power.
specifications comparison table
For ease of choice and understanding of the place of the model on the market, we will give a comparative data with direct competitors and the older model of the line. The table shows that the Sharmax 9.8 is not inferior to more expensive analogues in terms of basic parameters, while maintaining the availability of spare parts.
| Parameter | Sharmax T9.8BMS/L | Yamaha 9.9 GMHS | Hidea HD9.8FHS |
|---|---|---|---|
| Power (hp) | 9.8 (15*) | 9.9 (15*) | 9.8 (15*) |
| Workload (cm3) | 169 | 169 | 169 |
| Weight (kg) | 25.5 | 26.0 | 25.8 |
| Type of ignition | CDI | CDI | CDI |
| Fuel consumption (L/h) | ~3.5-4.0 | ~3.5-4.0 | ~3.6-4.1 |
As you can see from the table, the performance of the three models is almost identical, as they are produced in the same factories in China (often even on the same assembly line), the differences can only be related to the quality of the assembly, the configuration (the availability of tools, the tank) and the availability of service in your region. The Sharmax model often beats competitors in terms of the price of spare parts and their availability in stores.
Typical malfunctions and maintenance
Despite its reliability, the engine requires regular maintenance, and the most common problems owners face include clogging the carburetor due to poor fuel quality and oxidation of the ignition system contacts during long-term storage. Preventive cleaning of the carburetor and the use of a fuel stabilizer during preservation for the winter avoid 90% of start problems.
The cooling system also requires attention: water pump impeller is a consumable. Although it has a large resource, the intake of sand or particulate matter can damage the blades. It is recommended to lubricate the lower unit annually and check the condition of the coils to prevent water from entering the gearbox, which can lead to expensive repairs.
Regular replacement of the fuel filter-settlement and use of high-quality mixture - the key to stable operation of the engine for many seasons without major repairs.
Replacement candles and compression checks do not require complex equipment to perform basic maintenance on your own in the field. Always carry a spare candle and a set of keys. If you notice a decrease in traction or an increase in fuel consumption, first check the condition of the candle: black plaque will indicate a rich mixture, and white - poor or overheating.
⚠️ Warning: When storing the engine in the off-season, be sure to produce the residue of fuel from the carburetor or use a special preservative. The remaining gasoline in a few months turns into a resinous substance that clogs the jellyberries.
Where to buy and how not to make the wrong choice
Decision Buy a 9.8 Sharmax outboard motor It should be taken in a balanced manner, choosing a proven seller with a good reputation. Official dealers provide a guarantee that really works, and have certified service centers. Buying "hands-on" or on dubious sites can result in the purchase of a restored or defective unit, which has already been made unqualified changes.
When inspecting the new engine, pay attention to the quality of painting, the absence of chips and backlashes in the connections. Check completeness: the presence of a tank, fuel hose, keys and instructions in Russian is the standard for official deliveries. Also specify the year of release, as newer models may have improved performance compared to the first batches.
How to distinguish the original from the fake?
The original motor features a clear laser engraving of the number on the lower unit, high-quality stickers without bubbles and smooth seams for aluminum casting. Counterfeiting is often sinned by curved seams, poor painting and the absence of protective seals on the bolts.
The price range for this model remains one of the most attractive in the 10-15 hp class, making it affordable for a wide range of water lovers. Investing in a quality engine pays off the pleasure of fishing and having no problems launching at the most inopportune moment. Choose reliability and proven solutions that are used by thousands of anglers around the country.
FAQ: Frequently asked questions
What is the best gas to pour in Sharmax 9.8?
The manufacturer recommends the use of gasoline brand AI-92 or AI-95. The main requirement is freshness of fuel. It is not recommended to store gasoline in the engine tank for more than 30 days, as it loses its properties and forms deposits.
Can this motor be used in seawater?
Yes, the motor can be operated on salt water, but after each exit, you need to thoroughly wash the cooling system with fresh water. Salt deposits destroy aluminum alloys and impeller pump much faster than fresh water. It is also recommended to lubricate all external metal surfaces with anti-corrosion lubrication.
Do I need to register the engine in GIMS?
Under current Russian law, engines over 8 kW (about 10.88 hp) are subject to registration. Since the Sharmax 9.8 passport capacity is 9.8 hp, formal registration is not required. However, if you have a scattering up to 15 hp, the power is technically exceeded the limit, and there may be questions when checking, although it is difficult to prove power without a stand.
Which screw is better to put for a heavy boat?
For heavy boats or full load, it is recommended to use a smaller pitch propeller (for example, 8 or 9 inches instead of the standard 10-11) This will allow the engine to gain speed and get on plane more easily, reducing the load on the piston group. The optimal propeller is selected experimentally: the motor should develop maximum revs (5000-5500 rpm) at full gas.