Choosing a power unit for a lightweight inflatable or plastic boat is often a difficult dilemma for beginners. There are many brands on the market, but the Chinese manufacturer is a great choice. Hidea The three-horsepower model has a special niche, because it does not formally require registration with the GIMS in many cases and allows you to use a boat without a license.
Two-stroke engine of this class attracts attention for its simplicity of design and ease of maintenance. Hidea Motor 3 It has a built-in fuel tank, which eliminates the need to carry extra canisters on short walks, while making it easy to modify the device by installing a remote tank to increase autonomy.
In this article, we will discuss in detail the technical nuances, the process of running and possible improvements, and understanding the principles of operation of this unit will help to extend its life and avoid the typical errors when operating in harsh conditions of real water bodies.
Specifications and engine design
The heart of the unit is a single cylinder two-stroke The engine has a working volume of 52 cubic centimeters, which is standard for this power class, and develops maximum speeds in the range of 4500-5500 rpm, providing a confident exit to planing light boats up to 3 meters long with one passenger.
The ignition system is based on CDI (electronic ignition without contacts), which eliminates the need to adjust the gap of the candles and replace the interruptors. However, owners should remember that the ignition coil and switch are sensitive to quality. candleThe use of candles with the wrong potassium number can lead to overheating of the piston group or, conversely, to oiling of the electrode.
⚠️ Warning: Never use pure gasoline without oil to lubricate the engine. Mixing AI-92 gasoline and two-stroke oil should be made in a strict ratio of 1:25 (40 ml of oil per 1 liter of gasoline) for the break-in period and 1:50 for further use.
The transom mount is made of a strong alloy with anti-corrosion coating. The height of the leg allows you to lower the lower unit deep enough to avoid capture of air by a screw on the wave. The weight of the structure is about 9.8 kg, which makes it quite liftable to install alone, although it is still convenient to carry it over long distances with an assistant or on a trolley.
The process of breaking in: a critical stage
Many beginners make the fatal mistake of ignoring the break-in stage or conducting it incorrectly. Piston group And the crankshaft bearings have to get clean, and if you give them full gas, the micro-strains of the metal can cause bullies that will irreversibly reduce the compression and the life of the motor.
The process takes about 10 hours of operation or 3-4 full tanks of fuel mixture. In the first hours of operation, you should avoid long work at constant speeds. You need to periodically change the operating modes, giving the engine a little more load, then dumping gas. This will ensure uniform lubrication of all components.
☑️ Checklist of Hidea 3 hp running
Special attention should be paid to the cooling system. During the break-in, regularly check the control hole for the launching. If the jet is weak or intermittent, this may indicate that debris enters the water intake or an air traffic jam in the system. Impeller pump It should also be wiped clean, so working "dry" even for a few seconds is strictly prohibited.
After the first 10 hours are completed, it is recommended to drain the old fuel, replace the spark plug with a new one and check the tightening of all threaded joints, especially the hairpins of the cylinder head and carburetor.
Setting up the carburetor and fuel system
carburetor Hidea 3 It's a simple membrane assembly, but it needs the right setup to be stable, and the factory settings may not be consistent with the fuel quality in your region or altitude, and it's two screws that are adjustable: the mix quality at idle speed and the mix quality at high speed.
First, the engine is heated for 5-10 minutes, then the idle screw is made to work steadily so that the engine does not decelerate when the gas is discharged. The mixture quality screw (usually denoted by the letter L) is twisted until the revolutions begin to fall, and then twisted back a quarter of a turn, this will give the richest and safest mixture for acceleration.
| Parameter | Meaning/Action | Tool. |
|---|---|---|
| Engine capacity | 52 cm3 | - |
| Type of carburetor | Float with diaphragm | Screwdriver cross |
| Candle gap | 0.6. 0.7 mm | Squirt |
| Idle turn | 2800 - 3200 rpm | Tachometer |
| Proportion of oil (break-in) | 1:25 (4%) | Measuring glass |
If the motor is unstable, sneezes into the carburetor or stalls when the throttle is opened abruptly, you may need to clean the chickles. Low-quality fuel may contain impurities that clog thin channels. Use a special carburetor cleaner and blow the system with compressed air.
The Secret to Stable Work
The problem with floating turns is often not the carburetor, but the air pump through the gasket between the carburetor and the cylinder. Try sprinkling WD-40 at the joint with the engine running: if the speed changes, then the gasket should be replaced or put on a sealant.
Tuning and modernization to improve comfort
The standard engine is minimalistic, but enthusiasts often refine it to improve ergonomics. The most popular modification is the installation of a 12-liter remote fuel tank, which increases the range by 4-5 times compared to the built-in tank, which is critical when fishing on large bodies of water.
To implement this solution, you need to purchase a set of adapters and a fuel hose. You need to insert into the regular fuel channel. You need to use gasoline-resistant hoses, otherwise they can collapse and cause a fire. And many owners change the standard propeller to a more "traction" one with increased pitch if the boat is often used with full load.
Another useful upgrade is the elongated handle of the crank, which can be short for tall people or for control from the stern seat, and the extension of the lever reduces the force required to turn the motor, making the control smoother and more accurate, and is usually done through the adapter to the regular seat.
Typical malfunctions and methods of their elimination
Despite the reliability, elbow-engine You may experience problems typical of two-strokes, and one of the common reasons for failure is a failure of the ignition system or lack of spark, and first of all, you should check the candle: if it is wet and black, then the mixture is too rich or there are problems with ignition.
The engine is often overheated by a pump failure. If there is no water coming from the control hole, you must immediately shut the engine down. The reasons can be different: impeller wear (rubber impeller), clogging of the water intake with grass or sand, or damage to lower unit.
⚠️ Warning: When disassembling a lower unit pump replacement, never turn the engine shaft backwards (counterclockwise, if viewed from above) and this can cause the crankshaft veneer to jump off and cause serious damage to the boulders.
If the engine loses power and does not develop full speed, check the exhaust system. The load in the exhaust channel and silencer can significantly complicate the gas output. It is also worth checking the compression: a value below 6-7 atmospheres indicates wear of the piston group or rings.
To prevent the lower unit mount bolts from oxidizing and the block head, always use copper lubricant or graphite lubricant when assembly, making it easy to unscrew them the next time, even after the season in salt water.
Preparation for winter storage
Proper conservation is the key to a long life of the engine, and before storage, you need to decompose all the fuel from the carburetor, and to do this, you can shut off the fuel crane (if you have a remote tank installed) and let the engine run to a complete stop, and the gasoline left in the float chamber will evaporate over the winter, leaving a resinous plaque that will clog the jelly.
Be sure to lubricate all external metal surfaces with special conservation lubricant or WD-40. Inside the cylinder through the candle hole inject 5-10 ml of engine oil and slowly turn the crankshaft several times so that the oil film covers the cylinder mirror and rings.
Store the motor in a vertical position (on a lower unit) or horizontally, but strictly on a certain side (usually right when viewed from the back) so as not to damage the glands. Cover the device with a breathable case to avoid condensation that causes corrosion.
The engine's main enemy in storage is moisture and residue from old fuel, and full gasoline production and lubrication of the interior surfaces ensure an easy start next spring.
Frequently Asked Questions (FAQ)
Can I get a Hidea 3 hp 95-m gasoline?
The AI-95 petrol is allowed, but not mandatory. The engine is designed for the AI-92. If you use the 95, make sure it is alcohol-free (ethanol can break down the rubber seals of the carburettor), the main thing is to strictly observe the ratio of mixing with oil.
Which screw is better to put for a heavy boat?
For heavy boats or when fully loaded (2-3 people), it makes sense to consider a screw with a reduced pitch (for example, 3.8 inches instead of the standard 4.2). This will reduce the top speed, but improve thrust at low revs and facilitate the exit to planing.
Why does the engine smoke when it's working?
Plenty of white smoke is normal for a two-stroke engine, especially during break-in or when running on a rich mixture. However, if the smoke turns gray and the smell of burning appears, this may indicate the burning of oil due to the wrong proportion of the mixture or wear of the gums.
Do I need to register the Hidea 3 hp engine in GIMS?
Under current Russian law, registration is required for small vessels with an engine of more than 8 kW (about 10.8 hp). Since the power of the Hidea 3 is 3 hp (2.2 kW), the engine itself does not require registration. However, if the total weight of the boat and engine exceeds 200 kg, or if the boat is longer than 3 meters, the requirements may vary.