The modern market of water equipment offers a wide range of solutions for the configuration of swimming equipment, and among many brands, Chinese manufacturers are attracting special attention, who were able to combine the affordable cost with an acceptable build quality. Kamisu outboard motor This is a striking example of this balance, offering customers a reliable unit for small and medium-sized vessels without overpaying for the hyped name, which is often the first step in the world of boating technology for many fishermen and tourists looking for autonomy on water.
Owners of PVC boats and small aluminum boats are increasingly looking at the equipment of this brand, as it allows you to effectively solve the tasks of moving in quiet weather and at medium speeds. Kamisu We have established ourselves as a manufacturer that does not seek to blindly copy Japanese or American designs, but offers our own vision of the design, adapted to the real conditions of operation in our latitudes. It is important to understand that the choice of a power unit is always a compromise between price, weight and power, and in this niche the brand in question takes a confident position.
This article is intended to dispel myths and provide comprehensive information about the technical features, nuances of service and the real capabilities of these engines. CDI ignition system with electronic advance control This is the standard for most models of this brand, ensuring stable start and smooth operation at idle. If you are faced with a choice or already own such equipment, this material will help you better understand the device of your "iron friend".
Technical features and design of the engine
Construction kamisu It is based on time-tested solutions that have proven to be effective in the mass segment of water technology, and the basis of the power plant is a two-stroke gasoline internal combustion engine, designed with the requirements for compactness and ease of maintenance. aluminum-alloy In the production of the hull and lower unit, it allows to significantly reduce the total weight of the unit, which is critical for inflatable boats, where each kilogram on the transom affects the differentiation and stability of the vessel.
Special attention should be paid to the cooling system, which in most models is implemented on the principle of forced circulation of off-shore water through a water pump. impeller It's made of wear-resistant rubber, but it's very sensitive to dry work, so controlling the control stream is a prerequisite for operation. loop-blowing cylinders, which allows you to effectively clean the combustion chamber from exhaust gases and provide stable power at various speeds.
⚠️ Warning: Never start the engine out of water or without a functioning cooling system, even for a few seconds, as this is guaranteed to overheat and bully the piston group.
The ignition system, as mentioned, is electronic, which saves the owner from having to adjust the gap of the candles or change the contacts of the interrupter, as was the case in older models. Magdino. It generates the right current, and the switch generates a spark at a specific moment, depending on the rotation of the crankshaft. This circuit is highly reliable and does not require user intervention during the entire service life, except for periodic replacement. spark plug.
Model line and power selection
The brand’s assortment matrix covers the most sought-after low-power segment, ideal for light inflatable boats and small boats. Typically, in catalogs, models with a capacity of 2.5 to 9.8 can be found. horsepowerThe choice of a specific modification should be based not only on the desired speed, but also on the vessel's carrying capacity, the number of passengers and the conditions of navigation.
For single-seat PVC boats up to 3 meters long, the best choice will be models with a capacity of 2.6-3.5 hp, which allow speeds of up to 10-12 km / h and have a minimum weight. More powerful versions, such as 5.8 or 9.8 hp, already require installation on boats with a rigid or reinforced inflatable transom, capable of withstanding vibration loads and weight of the unit. long-dadewaul It is designed for boats with a transom height of about 50 cm, and a short one for 38 cm, and an error in choice will lead to cavitation or, conversely, to excessive water resistance.
The comparative table will help you to orient yourself in the main parameters of popular modifications presented on the market:
| Model | Power (hp) | Work volume (cm) | Weight (kg) | Type of management |
|---|---|---|---|---|
| Kamisu 2.6 | 2.6 | 49 | 9.5 | rumble |
| Kamisu 3.5 | 3.5 | 60 | 9.8 | rumble |
| Kamisu 5.8 | 5.8 | 98 | 21.0 | rumble |
| Kamisu 9.8 | 9.8 | 169 | 26.5 | rumble |
It is worth noting that more powerful models are often equipped with a forced lower unit lift (tilt) system, which makes it easier to overcome shallow water and pull the boat ashore. Transportation angle It's fixed by a propeller or latch, preventing the motor from lifting spontaneously when reversing. For anglers who often change fishing locations, weight becomes a critical parameter, so models up to 10 hp are most in demand due to the ability to carry one person.
Primary breaking in rules
The break-in procedure is perhaps the most important step in the life of a new engine, which directly depends on the life of its service. kamisu At full capacity, which leads to local overheating of rubbing parts and uneven fitting of piston rings, the correct laundry allows you to form the perfect geometry of the surfaces and ensure the necessary tightness of the combustion chamber.
The first start is recommended to be made on a stand with a barrel of water or in a reservoir, but subject to strict speed limits. During the first 10 hours of operation (or one fuel tank) should not exceed 50% of the maximum power, and in the first 2 hours - more than 30%. Turnover must be constantly varied, you can not keep the engine idling for a long time or at maximum speeds, as this is for the formation of an oil film.
☑️ Checklist of proper breaking in
Special attention should be paid to the preparation of the fuel mixture during this period, since the engine is two-stroke, it runs on gasoline with the addition of a special fuel mix. two-stroke oilDuring the break-in, the oil concentration is often recommended to be slightly higher than standard (for example, 1:25 instead of 1:50) to ensure enhanced lubrication of the CNG parts. After the break-in cycle is completed, you need to replace the spark plug and check the tightening of all threaded joints, since the vibration could weaken them.
⚠️ Note: Use only quality two-stroke oils labeled TC-W3, designed for water cooling, as car oils can lead to the formation of soak and failure of the catalyst (if any) or candles.
Fuel mix and resource consumption
The quality of the engine depends on what you feed it. KamisuAs with any two-stroke engine, it is critical to adhere to the mixing ratio of gasoline and oil. Usually the manufacturer recommends a ratio of 1:50 for break-in engines, but the quality of the available fuel dictates its own adjustments. Use of gasoline with an octane number below the AI-92 can lead to detonation, which is destructive to the piston and rod.
These engines are fuel efficient because of their simple design and lack of complex injection systems. On average, a two-stroke engine consumes about 300-400 grams of mixture per 1 hp per hour at full load, which means in practice that a standard tank of 1.2-1.5 liters can last for 3-4 hours of active movement at medium speeds. carburetor The membrane type installed on most models is less sensitive to the slopes of the boat, which allows you to feel confident even in heavy chop.
How to store the fuel mixture?
Fuel mixture is not recommended to be stored for longer than 2-3 weeks, as oil precipitates and gasoline loses its properties. If you plan a long break in operation, it is better to develop the residue of fuel from the carburetor or use special stabilizers.
To prepare the mixture, use a separate clean canister, pre-pouring the required amount of oil there, and then adding gasoline. Intense shaking It's not a good idea to make the mixture by eye, but rather to use a measuring tank or a syringe to avoid errors that could cost the engine its life.
Regular maintenance
And boat-engine It's been a long time since we've had a lot of good times, and you have to stick to maintenance regulations, and the main enemy of any water technology is corrosion and the flow of water into friction nodes, and after every run, you're advised to wash your cooling system with fresh water, especially if you've been swimming in salty or polluted water, and this simple operation will prolong the life of your water jacket and exhaust manifold.
The gearbox requires a change of lubricant at least once a season or every 100 motor hours. Visual inspection of the oil in the gearbox can tell you a lot: if it is "coffee with milk", then water has got there through the glands, and they need urgent replacement. Bearings The paddle shaft also needs lubrication, which is usually supplied through the oil on the body of the lower unit with a special syringe.
The spark plug should be twisted and checked for the presence of sodium every 50 hours. The color of the sodium will tell you about the quality of the mixture: black and velvety speaks of a rich mixture, white speaks of a poor one, and brick and brown indicate the correct operation of the engine. Air filter The carburetor (if it is structurally provided in the form of a grid) also needs periodic cleaning from dust and oily deposits.
Lubricate all the points of attachment of the motor to the transom and the movable joints of the tiller with a consistent lithium lubricant before each season - this will prevent bolts from acidifying and facilitate control.
Typical malfunctions and methods of their elimination
Even reliable techniques sometimes require attention, and Kamisu One of the most common problems owners face is the lack of a spark or a faint spark, in which case the candle, the high-voltage wire and the mass are first checked. If the candle is dry but there is a spark, the problem may be in the fuel system: the carburettor's chick is clogged, the valve in the tank lid is malfunctioning or the fuel hose is leaky.
If the engine starts and immediately stalls, does not hold idle turns, most likely, the reason lies in the sucking of excess air through the gaskets of the carburetor or the crankshaft. Diagnostics Such malfunctions often require the use of an aerosol to check the tightness (pitching around the joints when the engine is running), also a frequent problem is overheating due to a foreign object getting on the water intake or the destruction of the pump impeller.
- 🔧 The engine will not start: Check for spark, candle condition, fuel supply and stop button position.
- 🌊 No cooling trickle: Clean the water intake from the algae, check the pump and the integrity of the hoses.
- 💨 The engine is smoking: Check the proportion of the oil in the mixture, the condition of the piston rings and the quality of the fuel.
- 🔊 Extraneous noise: May indicate operation without lubrication in the gearbox or damage to the propeller.
In difficult cases, such as loss of compression or knocking in the bottom head of the rod, a complete bulkhead of the engine may be required with the replacement of the piston group. Repairs Such nodes require special skills and tools, so it is better to contact an authorized service center.
⚠️ Warning: When disassembling a carburetor or fuel system, be extremely careful with gaskets and membranes - they are very thin and easily torn, and it is difficult to find the original remake on sale.
Comparison with competitors and final conclusions
Against the backdrop of giants such as Yamaha, Tohatsu or Mercury, the brand Kamisu Although it looks modestly new, its pricing makes it extremely attractive for the budget segment. Compared to its domestic counterparts, Chinese engines often outperform in ergonomics, casting quality and vibration levels. They are quieter and have a more modern appearance, although in terms of maintainability they can be inferior to the time-tested classics.
The main advantage is the price-per-quality ratio, and for the cost of a simple domestic engine, you get an electronic ignition unit, an improved cooling system and a nice design. resource Such engines in intensive commercial operation will be lower than the top Japanese brands, but for amateur use on weekends it is more than enough.
Kamisu is the best choice for weekend-rest and fishing enthusiasts who want to get a modern and lightweight engine without overpaying for the brand, but are ready to pay attention to the quality of the mixture and maintenance.
In conclusion, the Kamisu outboard motor is a worthy representative of its class, which, if properly handled, can work for more than one season. It is ideal for the configuration of light PVC boats, where every kilogram of weight is important. Compliance with the rules of running, using high-quality fuel and regular maintenance will allow you to enjoy water walks without unpleasant surprises.
Where do I look for parts?
Kamisu engine parts are often unified with other Chinese brands (Parsun, Hidea), so finding parts by catalog numbers can be successful even in stores that do not specialize specifically in this brand.
Frequently Asked Questions (FAQ)
What is the best oil to put in the Kamisu outboard motor?
Use only special oils for two-stroke outboard motors labeled TC-W3. They are designed to work in water-cooled conditions and burn with minimal formation of sodium. Automotive oils (2T for air-cooled) can not be used.
Can I use AI-95 gasoline?
Yes, you can, but in this case you need to reconfigure the carburetor (deplete the mixture), as the octane number is higher, but the manufacturer recommends using AI-92 gasoline, since the engine runs in the calculated thermal modes without the risk of detonation.
What is the maximum depth of the lower unit dive?
The motor must be mounted so that the anti-cavitation plate (horizontal plate above the propeller) is 2-4 cm below the water level when parked. Too deep immersion increases resistance, and too small will lead to air capture and overheating.
Do I need to drain water from the pump for the winter?
After the season is over, you need to blow out the compressed air cooling system or use antifreeze to prevent the residue from freezing and tearing the pump or pipe body, and it is also recommended to keep the engine upright.
Is it possible to develop a speed of 20 km / h on a 9.8 hp engine?
Yes, it is real, but only on a lightweight inflatable boat with one passenger and a correctly selected propeller, for heavy boats or at full load speed will be lower, in the area of 12-15 km / h. Gleaning at such capacities is possible only on light boats.