Finding a reliable and economical outboard motor for a small boat often leads a potential owner to a model. Tohatsu 9.8bhp This legendary nine is deservedly considered one of the most popular in its class due to the combination of power, weight and maintainability. However, not everyone has a budget for a new unit, and this is why the used equipment market is so keenly interested in water engines.
Purchase of equipment with a run is always a lottery, where the winning is a quality unit at a price much lower than the market, and the loss is hidden defects and expensive repairs. In this article, we will discuss in detail how to safely buy a Tohatsu 9.8 bu outboard motor, which nodes to pay priority attention to and how to distinguish a well-groomed specimen from a problem one.
The Japanese School of Engineering is renowned for its reliability and Tohatsu This is no exception, but even the most robust machinery requires proper operation, and understanding the specifics of two-stroke engines (which is what you're most likely to find in this power class) will help you avoid buying a cat in a bag. Let's dive into the details of the selection process.
Why Tohatsu 9.8: Analysis of the Model and its Features
Model range Tohatsu 9.8 It covers several generations of engines, which share a common philosophy of simplicity - simplicity and efficiency. M9.8B or older modifications M10AThey are easily de-forced to 9.8 hp to meet registration requirements, and their popularity is due not only to the brand, but also to design solutions.
The most important feature of these engines is the presence of a system. lubrication The newer versions are equipped with an electronic ignition system (CDI) that provides stable start and operation at idle speeds, which is critical for fishing or trolling. The lack of complex electronic control units makes them less susceptible to fuel quality compared to four-stroke counterparts.
The weight of the unit is about 26-27 kilograms, which makes it easy to transport it in the trunk of a passenger car or even bring it to the apartment for storage. Aluminum lower unit The engine and propellers provide durability to the bottom, although they require attention to corrosion. Many owners note that this engine easily tolerates overload, if not exceed the recommended limits for the fuel mixture.
And we also have to mention the cooling system. Tohatsu It's a classic solution that works for decades, but requires periodic replacement of consumables, and if you're looking for a motor for heavy commercial use or for frequent weekend trips, it's a workhorse that pays for the investment.
Where to look for ads: sites and sources of information
The search for a specific unit begins with the choice of a site. In Russia and CIS countries, there are several main channels where you can buy a Tohatsu 9.8 bu outboard motor. Large ad aggregators such as Avito or Yula offer widest selection, but require careful filtering.
Specialized water-motor forums and social media thematic groups often provide better offers, where sales reputation is key, and owners are less likely to sell outright junk, and forums allow quick information about a particular model by VIN number or serial number if other users have encountered similar items.
Also, do not discount the specialized service centers, which sometimes implement Trade-in Buying from the official can cost more, but often gives minimal warranty and confidence in technical condition. In any case, the search geography should be expanded to neighboring regions if you are ready for transportation, as the price can vary significantly.
- 🔍 Advertising aggregators: huge choice, but high risk of running into scammers or hidden defects.
- 🤝 Forums and clubs: More honest salespeople, the ability to learn the history of the engine, but the choice is limited.
- 🏪 Service centres: Proven equipment, sometimes with a warranty, but the price can be close to the market.
- 📦 The bulletin boards at the shops: Motors are often sold that did not suit the previous owner in terms of power or type.
When analyzing ads, look for wording: phrases like "motor after wintering," "requires adjustment of the carburetor," or "long time not started" should serve as a red flag. Better spend time looking for an option that is "fully served" or "season-ready," even if the initial price seems higher.
Visual inspection: what to look at first
The first meeting with the seller and the engine is a critical moment that determines whether to waste time on further testing. Tohatsu 9.8 There's a lot to tell you about it, and first, look at the lower unit, and if you have deep scratches, dents, or weld marks, you can see that you're operating sloppy or hitting underwater obstacles, which could have caused the shafts to shift.
Look at the paint condition on lower unit. If you see fresh paint on top of rust or sealant marks at the joints, it's a sign that the engine has been opened. For two-stroke engines, it's normal if the planned maintenance was carried out, but if the seller claims that the engine "has never been understood," and there the traces of interference are false. Pay special attention to the anti-cavitation stove: it should not have cracks or repairs.
Pay attention to the lower unit: if the aluminum part shows traces of active corrosion (white plaque) or deep shells, then the engine was stored incorrectly, and the tightness of the body may be violated.
Check the condition of the rubber elements: the lower unit belt, the ovens and the seals. The rubber should not be dried, cracked or oak. The sealing rings at the junction of the lower unit and the middle part should fit tightly. Also check the fuel pump (if any) and the hoses: cracks on the fuel hoses are a sign of aging materials, which will require immediate replacement to avoid fire or water entering the carburetor.
An important indicator is the state of the candle channel and the candle itself. Unscrew the candle and examine its color. Black soda indicates a rich mixture or use of low-quality oil, white plaque indicates overheating or working on a poor mixture. The ideal color is coffee or light brown. The presence of an oily plaque on the electrodes may indicate wear on the piston group or crankshaft glands.
Technical inspection: launch and testing on the water
Never buy an engine that the seller refuses to start with you. Tohatsu 9.8 If the engine is troit, idle, or requires long-term pear pumping before starting, these are signs of problems with the carburetor or fuel system. The smoke from the exhaust should be moderate when warmed up and quickly disappear after going into operating mode.
Be sure to check the cooling system. Immediately after starting, a stream of water should come from the control hole (the “urinal”). Weak pressure or its absence indicates clogged cooling channels, wear of the pump impeller or the presence of an air traffic jam. Operating the engine without normal cooling even for a few minutes can lead to jamming of pistons and expensive repairs.
☑️ Checklist of engine check before purchase
Listen to the engine. A smooth, throttling sound without knocking, creaking, or screeching is a sign of motor health. Extraneous sounds may indicate wear on crankshaft bearings, rod fingers, or ignition problems. When the throttle is abruptly opened, the motor must gain momentum without dips. If the engine starts to "choke" or stalls, the problem is most likely to be the carburetor settings or the jeel contamination.
⚠️ Attention: If you hear a metal ringing or a knock resembling a metal hitting a metal, immediately shut the engine down, which may indicate the destruction of the shaky piston group or bearings, making it economically ineffective to buy.
For a full test, it's ideal to be able to go out on the water, and only under load you can assess the traction specifications and the behavior of the motor in different modes. However, if this is not possible, at least scroll the engine in the air (required to have a cooling system connected!) and check the compression. Tohatsu 9.8 Compression in the range of 6-8 atmospheres (about 7-9 kg / cm2) is considered normal, but the equality of cylinders (if there are two) and stability are more important.
Documents, history and legal aspects
Buying used equipment always involves risks related to the origin of the product. When buying a Tohatsu 9.8 outboard motor, be sure to require documents proving ownership. This can be a purchase contract, a check from a store or a previous PSM (Passport of a self-propelled car) if the engine was registered with GIMS. The lack of documents will significantly complicate the registration of the engine in your name.
Check the serial number of the engine. It's stamped on a lower unit, usually on the bracket of the adhesive or on a lower unit belt. The number must match the number in the documents. The serial number can tell the year of the engine's release, which is important for estimating its real age, even if the seller claims otherwise. Sometimes (year) is encoded in the room itself, and this information is easily found in Tohatsu decoding tables.
If the engine was previously registered with GIMS, make sure that it is removed from the register. Otherwise, you may have problems when trying to register it yourself. The seller must provide a certificate of deregistration or a corresponding note to the PSM. Buying a motor that is wanted or pledged may lead to its seizure by law enforcement agencies.
It is also important to understand that from 2026 (conditionally, in the context of current laws), the requirements for registration of small craft and engines may change. At the moment, engines up to 10 hp (including 9.8) in combination with a boat weighing up to 200 kg do not require registration if they are used for personal purposes.
How to decipher the Tohatsu serial number?
The serial number is usually composed of letters and numbers. The last two digits often indicate the year of release. For example, if the number ends with 18, the engine may be of 2018 release.
Price comparison and evaluation of the feasibility of purchase
Pricing in the secondary market of motors Tohatsu 9.8 Depending on many factors: year of production, technical condition, availability of documents and equipment (availability of a tank, lower unit belt, candles), the analysis of current offers allows you to form an approximate idea of the cost.
| Motor condition | Year of issue (example) | Availability of documents | Average price (ruble) |
|---|---|---|---|
| Great, after that. | 2020-2023 | Complete package | 85 000 - 105 000 |
| Good, working. | 2015-2019 | There's a contract/check. | 60 000 - 80 000 |
| Requires repairs. | 2010-2014 | Absent. | 30 000 - 45 000 |
| "Constructor" (in spare parts) | Anyone. | No. | 15 000 - 25 000 |
When considering whether to buy a used motor, compare the cost of a new one with the price of a new one. If the difference is less than 30-40%, it is often more profitable to buy a new unit with a warranty and full life. However, if you find a well-maintained one for 50% of the price of a new one, this is a great deal. Consider also the cost of potential repairs: replacing a piston group or carburetor can cost up to half the cost of the engine itself.
Don't forget the seasonal factor. In spring and early summer, outboard prices traditionally rise as demand exceeds supply. In autumn and winter, when navigation closes, you can find better deals as owners seek to make room in garages or get live money.
⚠️ Attention: Don't get too low on the price. Tohatsu 9.8 If the price is significantly lower than the average market price (for example, 20 thousand rubles for a working engine in 2020), this almost guaranteed means the presence of serious hidden defects, stolen origin or fraud.
Frequent Questions and Answers (FAQ)
What is the life of the Tohatsu 9.8 two-stroke engine?
With proper operation (observance of the proportion of the mixture, the use of high-quality oil and gasoline, regular replacement of candles and lubricants), the engine life can be from 1000 to 2000 hours or more.
Do I need to register the engine 9.8 hp in GIMS?
Under current Russian law, motors up to 10 hp (inclusive) combined with a boat with a payload of less than 225 kg (or a weight of less than 200 kg) are not subject to registration.
What is the best oil to use for Tohatsu 9.8?
It is recommended to use special two-stroke oils with labeling. TC-W3Oils of other standards may not provide sufficient lubrication and corrosion protection, which will lead to rapid engine wear.
Can I increase the power of the Tohatsu 9.8 to 10 or 15 hp?
Technically, some models (e.g., 9.8 and 10 hp) have the same piston group, and the increase in power is possible by replacing the carburetor or petal valve. However, such manipulations ("flashing" or mechanical intervention) deprive the warranty (if any) and can reduce the engine life. 15 hp requires a replacement of the piston group.
What to do if the engine does not keep idle speeds?
Most often, the cause is pollution of the carburetor, air sucking through the glands or improper adjustment of the screws of quality and quantity of the mixture, requiring cleaning of the carburetor, checking the leakage and adjusting.
Buying a used Tohatsu 9.8 engine is a reasonable compromise between price and quality, if you are willing to spend time on a thorough check of technical condition and documents.
In conclusion, the purchase of a used outboard motor Tohatsu 9.8 It requires attention and basic technical knowledge. It has proven to be a reliable and durable engine that can last for years. By following the recommendations for inspection, inspection and selection of the seller, you can find a great option that will provide you with many pleasant hours on the water. Take your time with the decision, compare options and always check the engine before paying.