Choosing an outboard motor for a boat is always a balance between budget and the desire to get a reliable unit that will not let you down far from the shore. MeisanIt offers products that are often perceived by newcomers as “just another Chinese,” but behind this simplified name hides a serious industry that produces copies of Japanese technology, particularly engines. Yamaha and Tohatsu.
Many aqueous engines are still wary of Chinese manufacturers, recalling times when the quality of the assembly left much to be desired. Meisan Marine The plant is equipped with modern metal processing lines and quality control at the output meets international ISO standards, which allows them to export products to dozens of countries around the world, including markets with high environmental and safety requirements.
In this article, we will discuss in detail what the Mesan outboard motor is, whether it should be considered as the main traction for your PVC boat or boat, and what nuances its operation hides. We will not hide the disadvantages, but objectively assess the advantages that a buyer receives, choosing this brand instead of eminent competitors with overpayment for the logo.
Brand history and production features
Company Meisan Wenling, China's capital of motors, is a Chinese-based company that has decades of experience and a great deal of engineering experience, and its strategy has been not to invent bicycles, but to accurately replicate time-tested designs, most notably the legendary series of two-stroke engines. Yamaha Enduro.
The production capacity is thousands of pieces of machinery per month, and unlike garage assemblies, it uses automated crankcase processing to ensure perfect geometry of the matching parts, which is critical because it is the quality of the surfaces that determines the resource. crank-and-wheeler And no oil starvation.
The Secret of Meisan's Popularity
By copying Yamaha, Meisan uses the same blueprints, but uses more affordable aluminum alloys and a simplified electronics system, which reduces cost without a critical drop in reliability for amateur use.
It is worth noting that Meisan Marine It's not just cloning, it's adapting engines to local conditions, and the enhanced lower units and propeller protection are not marketing, but the result of real-world operation in the harsh conditions of Asian rivers, where there's a lot of algae and debris, and this approach makes the engines resistant to impacts from underwater obstacles.
Technical specifications and model range
The brand’s range covers the basic needs of water lovers, the most popular are two-stroke models with a capacity of 2 to 18 horsepower. The two-stroke scheme is not chosen by chance: it provides high specific power and ease of maintenance, which is ideal for fishing and tourism.
The key feature of the design is the presence of a system CDI-ignition Carburetors installed on these motors are often labeled as non-maintenance and provide a stable spark even when moisture is injected. Mikuni or their qualitative analogues, which guarantees proper mixing.
- 🔹 Model MS 2.6: ideal "ferryman" for small boats, weight only 9.5 kg, built-in tank, neutral.
- 🔹 Model MS 5.0/6.0: golden mean for single fishing, the possibility of installing an electric starter (on some modifications) and a light generator.
- 🔹 Model MS 9.9/18Heavy artillery, actual power often higher than claimed, and a separate lubrication system (oil mixes automatically in some versions or requires manual mixing).
It's important to understand the difference between the declared and the actual power, because Chinese manufacturers often indicate the power on the propeller, whereas the Japanese on the crankshaft. Meisan 9.9 The thrust can feel like a full 10-11 force, which is a nice bonus for the owner.
Comparison with competitors: Meisan vs Yamaha and Tohatsu
The main question that comes up for the buyer is, "Why should I take Meisan if there's Yamaha?" The answer is price-risk ratio, the difference in cost can be as much as 2-3 times. Meisan MS 9.9 and Yamaha 9.9 They have about 80 percent of the parts in common, and the piston group, the lower unit, the cooling system, they're all interchangeable or very similar.
But there are differences. Meisan The lower grade bearings can be used, and the quality of the aluminum casting can have small defects that do not affect the work, but are noticeable to the eye. The anti-corrosion coating is also inferior to Japanese counterparts, requiring more careful care, especially when operating in salt water.
| Parameter | Meisan (China) | Yamaha/Tohatsu (Japan) | Comments |
|---|---|---|---|
| Price. | Low. | High. | Up to 300% difference |
| Resource (motowatch) | 1000-1500 | 2000-3000+ | With proper care. |
| Liquidity | Medium | High. | Sell the pit faster. |
| Parts availability | High (universal) | Tall (original) | Meisan parts are often used on Yamaha |
For those who ride 10-15 times a season, 1,000 hours of motorbike will last 10-15 years, while the overpayment for a Japanese brand will pay off only in 20 years, making a purchase. Meisan It is more economical for the average user.
breaking in: a critical stage
Chinese technology, like any new machine, requires a proper break-in, and neglect of this stage is the main cause of early breakdowns. Meisan It takes about 10 hours. You can't give full gas at that time.
☑️ Checklist of proper breaking in
The first two fuel tanks are recommended to be cooked with an increased oil content, and if the standard ratio for the work is 1:50, then it is better to use 1:40 or even 1:35 for running, this will provide abundant lubrication of rubbing vapors at a time when the gaps are still large.
⚠️ Warning: Never keep the engine idling for longer than 15-20 minutes while running the boat without moving. This can lead to overheating and candles, as the water pump pump at low revs pumps little water and the load on the engine is minimal.
After the first 10 liters of fuel mixture must be produced maintenanceBe sure to check the tightening of all bolt joints, especially the fastening of the dievus and carburetor, as they can weaken from vibration, and it is also recommended to replace the oil in the gearbox to remove the metal shavings formed when grinding the gears.
Use only high-quality two-stroke gasoline AI-92 or AI-95 with a fresh shelf life and special oil for water cooling (TC-W3) for running and working.
Typical malfunctions and methods of their elimination
Despite reliability, there may be problems in operation, most often not with engine failure but with fuel quality or maintenance, and one of the common problems is having difficulty starting after winter storage.
The power supply can clog carburetor jelly if the gasoline is left in the float chamber. For prevention, always drain the remaining fuel before long storage. Also, pay attention to the crankshaft oal: with prolonged storage, they can dry out, which will lead to air sucking and impoverishment of the mixture.
- 🔸 Ignition problems: if the spark is weak or disappears, first check the candle and the high-voltage wire. Often the contact inside the cap is oxidized.
- 🔸 Overheating: watch the control jet. If it's gone, it could be dirt in the cooling system or the pump impeller has failed.
- 🔸 Vibration.: Excessive vibration may indicate damage to the propeller or an imbalance in the crankshaft, which occurs after heavy impacts.
For diagnostics, always have a set of probes and a candle key at hand. The color of the coar on the candle will tell you more about the engine than any appliances. Black loam is a rich mixture, white is poor (dangerous!), brick is the norm.
⚠️ Warning: If you have a knock in a device, immediately turn off the engine. Continuing to work can lead to a complete jamming of the gearbox and expensive repairs that require replacing the gear-shaft pair.
90% of the problems with the start-up and operation of Meisan are solved by replacing the candle, cleaning the carburetor and using a fresh fuel mixture.
Where to buy and should I take a b/w?
Buying a new engine Meisan It gives the seller a guarantee that it is an important insurance policy in Chinese manufacturing, but the used motor market is also attractive, and used motors from China often bring saws or remanufactured ones.
When buying from hand, be sure to require the engine start in the barrel. Pay attention to the color of the exhaust (should not be gray from the oil) and the presence of vibrations. Check the compression: for two-stroke 9.9 hp compression is normal in the area of 8-10 atmospheres. If it is below 6 atmospheres, the engine requires major repairs.
In conclusion, Meisan It's a great choice for those who want to get the most traction for the least amount of money, a workhorse that, with proper care and quality fuel, can last for years without requiring the owner to have the engineering training to do the simplest maintenance.
What kind of spark plug is needed for the Meisan 9.9?
Most often used candles type NGK BR7HS The standard M14 thread, the electrode gap is 0.6-0.7 mm. Always check the kalyl number, it must correspond to the temperature of the engine.
Can I use Meisan in salt water?
Yes, but with limitations. Aluminum alloys in the hull are susceptible to corrosion. After each outing, the engine must be thoroughly washed with fresh water and oiled with anticortis, and the resource in salt water will be lower than that of specialized marine versions.
What kind of oil to use into the gearbox?
In the gearbox is poured special transmission oil for outboard motors (usually marked as Gear OilIt must have emulsifying properties (it must become an emulsion when water is ingested, not separated), as you can see by its color, often green or blue, with a volume of about 300-350 ml depending on the model.