Choosing an outboard motor for an inflatable boat or light boat always turns into finding a compromise between price, reliability and weight. HideaThe 9.9 horsepower model is a special place here, as it is formally the most powerful model that does not require registration with GIMS (subject to the weight restrictions).
However, dry performance figures do not always reflect the real picture of exploitation. Potential buyers They're often confused by conflicting opinions, with some praising the engine for being unpretentious about fuel, others complaining about the build quality. In this article, we've gathered and analyzed the experiences of real owners to give you an objective idea of what you'll encounter when you buy. Hidea HD 9.9.
Many people think of this engine as a clone of the legendary Yamaha 9.9But blindly copying a design doesn't guarantee identity, and it's important to understand that even with external similarities, internal tolerances, metal quality and electronics can vary significantly, and these are the nuances that often emerge in reviews after the first season of active use.
Technical specifications and design features
Motor. Hidea HD 9.9 It's based on a proven two-cylinder two-stroke circuit, and it has a displacement of 246 cubic centimeters, which is standard for this power class, and it weighs about 36 to 38 kilograms depending on the length of the lower unit, making it quite transportable for a single person, albeit with physical exertion.
The ignition system deserves special attention. Modern versions often use an electronic CDI system, which provides a stable spark even at low revs. carburetor There's usually one that makes it easier to set up, but it requires quality fuel, and the lubrication system works by mixing gasoline and oil, which imposes its own requirements on the quality of the fuel.
Use only high-quality two-stroke oils labeled TC-W3. The savings on oil can lead to pistons being bullied in the first 10 motor hours of operation.
The gearbox is designed to be used in fresh and salt water, but owners say you need to lubricate the omentums regularly. Unlike cheaper ones, it uses a forced cooling system with off-board water, which is critical for engine life.
⚠️ Warning: When running a new engine, do not open the throttle more than 50% in the first 10 hours of operation.
Comparison with competitors: Hidea vs Yamaha and Tohatsu
The question of “what is better” is the most discussed in the forums of water engines. Hidea 9.9 frequently Yamaha 9.9 and Tohatsu M9.8While Japanese engines are famous for their "unkillability" and silence, the Chinese engine is better off in price, but it is worse off in culture, and the difference in weight can be as high as 2-3 kg in favor of the Japanese, which is significant for inflatable boats.
Nevertheless, maintenance suitability Hidea And it's higher because of the availability of parts and the unification with other models, and many of the nodes are interchangeable, allowing owners to fix minor problems on their own. Japanese engines In this regard, they are more conservative and require special tools for deep maintenance.
Below is a comparative table of key parameters based on enthusiastic measurements:
| Parameter | Hidea HD 9.9 | Yamaha 9.9 (2T) | Tohatsu M9.8 |
|---|---|---|---|
| Workload (cm3) | 246 | 246 | 169 |
| Weight (kg) | 36.0 | 34.0 | 34.5 |
| Fuel consumption (max) l/h | ~4.5 | ~4.2 | ~3.8 |
| Noise level (dB) | Highly | Medium. | Low. |
It is worth noting that Tohatsu This is a great place to be in the light and green, but Hidea It offers a more thrust-driven engine on the bottom due to the larger volume, and for heavy boats with 3-4 passengers, this can be a decisive factor.
Fuel consumption and efficiency of operation
Two-stroke engines with a capacity of 9.9 hp are not examples of efficiency, but they are also “glutty” it is difficult to call them. In trolling or anti-current mode, the flow rate is about 2-2.5 liters of the mixture per hour. At full gas, consumption can reach 4.5-5 liters, which with a tank of 12-14 liters provides a range of about 2.5-3 hours of active operation.
Owners Hidea It is often noted that the actual flow rate depends on the quality of the mixture and the configuration of the carburetor, and the factory setting can be too rich, leading to the formation of soak on candles and overuse of fuel. Adjustment of the carburetor After breaking in - a mandatory procedure to optimize the appetite of the engine.
Using 92 instead of 95, which is allowed by the instructions, does not give significant savings, but may require more frequent replacement of candles. It is better not to experiment with the octane number, since detonation is more dangerous for the engine than extra pennies at the gas station.
How to calculate the exact range?
Divide the tank volume by the average flow rate per hour. For example: 12 liters / 3.5 liters = 3.4 hours. Always subtract 15% for contingencies and counterpoints.
For long-distance crossings, it is recommended to carry a fuel reserve in a canister. The engine design allows you to quickly add the mixture, but on the go, with strong pitching, this can be unsafe. Plan routes based on the actual flow rate, not data-sheet figures.
Startup problems and ignition system
One of the most frequent topics in the reviews Hidea 9.9 The motor is equipped with a manual starter (remer), and the effort on the thrust can be significant. Owners with a fragile build sometimes have difficulty starting "cold" after winter storage.
The problems are often hidden as spark plugs, which come with a package, and they are recommended to be replaced immediately with better analogues, for example, NGKAnd also, the condition plays a big role. fuel-filter- a sedimentary, which can be clogged with small garbage from the tank.
- 🔥 Check the gap of the candle: it should be within 0.9-1.0 mm.
- 🔥 Make sure there is a spark: twist the candle, press against the mass and pull the starter.
- 🔥 Blow the fuel line: the pear should be elastic and keep in shape.
If the motor sneezes or dies on the idlers, the cause is often the air suction through the carburettor gasket or the crankshaft ossils, which is treated by replacing seals and grinding surfaces. Hidea The weak spot is sometimes Hall sensors, which are afraid of moisture.
Noise and vibrations at different turns
Chinese engines are traditionally considered to be more noisy. Hidea 9.9 At idle speeds, the sound of the engine is quite smooth, but as the speed increases, there is a characteristic bellowing howl, due to the design of the exhaust system and the quality of the processing of the CNG parts.
Vibrations. They're very hard to get on the trunk of the boat, especially if the motor isn't rigid, and owners recommend using extra antivibrational pads for the rods, and long-term high-speed work can be tiring because of the monotonous hum.
⚠️ Warning: If the vibration of the motor is increased dramatically and a metal shot appears, immediately turn off the engine. This is a sign of problems with bearings or a foreign object hitting the screw.
Many people use silencers or refine their exhaust to reduce noise, but this can affect power and warranty. In quiet weather, the engine can be heard from several hundred meters away, which is worth considering for anglers.
Engine resource and service frequency
Resus two-stroke Hidea 9.9 If properly operated and properly blended, it's estimated to be 1,000-1,500 hours before major repairs, which is a good indicator for a budget-class engine, and the key to longevity is to maintain oil proportions and regularly replace fuel filters.
Maintenance is recommended every 50-100 hours or at the end of the season, and includes changing the gearbox oil, lubricating the bearings and glands, cleaning the carburetor and checking the compression. Compression cylinders should not fall below 8-9 atmospheres for normal operation.
☑️ Seasonal engine maintenance
Owners who ignore the oil change in the gearbox often experience water getting inside through the glands. Emulsion (mayonnaise) suggests that the omentum needs to be replaced. If you don't respond, the water will get to the bearings, and repairs will be expensive.
Frequent malfunctions and methods of their elimination
Despite the simplicity of the design, Hidea 9.9 The most common problem is that the owners are exposed to leaks of the cooling pump and the destruction of the lower unit hoses, and the plastic used in the cooling system can be fragile and burst from temperature changes.
Another problem is the quality of the fastener, screws and bolts can spontaneously unscrew from vibration, and it is recommended to walk through all connections with a thread lock immediately after purchase. Ignition system It also requires protection from moisture, especially in rainy weather.
Among the common complaints are also:
- ⚙️ Leak of the diewood oils (treated by replacement with high-quality analogues).
- ⚙️ Destruction of the impeller pump (you need to change once in 2-3 seasons).
- ⚙️ Failure of the ignition coil (often due to a breakdown in the mass).
To solve most problems, you do not need complex equipment, a standard set of tools and manuals is enough, the main thing is not to be afraid to disassemble the engine, since the design here is quite clear and logical.
Timely replacement of the impeller pump and osteometers of lower unit extends the life of the Hidea 9.9 engine twice.
FAQ: Frequently asked questions
Can I increase the power of the Hidea 9.9 to 15 hp?
Technically, the motor has the safety margin for this boost, as the piston group is often the same as the 15-horsepower versions. However, this requires replacing the carburetor, the petal valve and reconfiguring the ignition. Remember that after this modification, the engine will no longer meet the requirements for unregistered boats, and you risk a penalty.
What is the best oil to blend in for Hidea?
Use only TC-W3 oils. The Motul, Shell and Ravenol brands are well-established. Mineral oils are cheaper, but synthetic or semi-synthetic oils provide better lubrication and less nagaroprostivo, which is critical for a long engine life.
Why does the engine stop at idle speed?
It's probably contaminated with a carburetor's idle jettison, or you've got an air sucker, and you've got to check the screw's adjustment, and sometimes you just clean the carburetor with ultrasound, or you've got to replace fuel hoses that you might have blown.
Do I need to register Hidea 9.9 in GIMS?
The 9.9 hp engine itself is not subject to registration, however, if the total power of all the engines on the boat exceeds 8 hp (for inflatable boats up to 3 meters) or the weight of the equipped vessel with the engine exceeds 200 kg, registration is mandatory.