Choosing the first outboard motor for a small boat is always a balance between cost, reliability and performance. outboard motor Kamisu 5 hp 2tOwners of small craft, whether PVC boats or lightweight aluminum durals, are looking for a unit that can confidently lead a vessel to plane with one or two passengers on board.
The five-horsepower two-stroke engine range remains one of the most popular in the boating market, which is due to the fact that this is often the threshold for the possibility of operation without mandatory registration with GIMS (if the general weight restrictions of the boat are observed). Kamisu 5 The engine is positioned by the manufacturer as a reliable “working” engine for fishing and recreation, but the real picture of its operation is overgrown with many nuances that you need to know before buying.
In this article, we will discuss in detail the technical features, design solutions and, most importantly, the real experience of using this unit. We will analyze how justified its purchase in modern conditions, and what difficulties the user may face in the process of operation and maintenance.
Technical specifications and design features
Two-stroke internal combustion engine with a capacity of 5 hp is a classic scheme with a crank-shaking mechanism. Workload The cylinder of the Kamisu model is usually about 98 cubic centimeters, which is the standard for this power class. The design involves the use of a gasoline-oil mixture, which requires the owner to pay attention to the proportions of the components mixing.
The ignition system in these engines is usually implemented through electronic Capacitor Discharge Ignition: This solution provides a stable spark at all speeds and makes it easier to start the engine in the cold season compared to outdated contact systems. cooling through a water pump (impeller) allows the engine to work at full speeds for a long time without the risk of overheating, which is critical when moving against the current or wind.
The weight of the unit is approximately 19-20 kilograms depending on the modification and length of the lower unit, which is crucial for many anglers, since you need to carry the motor manually. Kamisu 5 It is equipped with a standard lower unit, allowing the use of screws with pitch optimized for glides of light boats, an important element is the presence of neutral gear and tiller control, which provides basic comfort when maneuvering.
⚠️ Warning: Before the first run, be sure to check for oil in the gearbox. Factory lubrication may be absent or insufficient for long-term operation, which will lead to rapid wear of gears.
Analysis of engine reliability and resource
The longevity of Chinese engines is always a hot topic. Kamisu 5 hp. Statistics show that the main life of the engine, when properly run and maintained, is from 500 to 800 hours before the first overhaul. The key factor is the quality of the assembly and materials used. The piston group is often made with a margin of safety, but the quality of the sealing rings and glands can vary from batch to batch.
Particular attention should be paid to the system. carburetorIn this class of two-stroke engines, it is the heart of the power system. Fuel sensitivity and gasoline purity are the Achilles' heel of many budget models. Using low-quality gasoline with a high alcohol or water content can lead to corrosion of the internal channels and sticking of the valve needle. Regular cleaning and tuning of the carburetor prolongs the life of the engine by hundreds of hours.
Corrosion resistance is another important aspect. The aluminum alloys used in the cylinder block and in the lower unit are corrosion-resistant, but they don't last forever. After every saline run, the motor requires thorough freshwater washing. Ignoring this rule leads to oxidation of contacts and destruction of metal surfaces, which is especially critical for the motor. boat-engineThey are used in aggressive environments.
The secret to a long life by a piston
Use high-quality semi-synthetic oil for two-stroke engines labeled TC-W3. Cheap mineral oils can form soak on the piston and rings, which reduces compression and engine power after 50 hours of operation.
Fuel consumption and efficiency of operation
Two-stroke engines are traditionally considered more "glutty" compared to four-stroke counterparts, however, in the 5 hp class, this difference is not as significant as in high-power models. fuel for Kamisu 5 At maximum speeds, it's about 1.5 to 1.8 liters per hour, and at cruising speeds, which are usually 70 to 80 percent of the maximum power, it's down to 1.0 to 1.2 liters per hour.
The standard ratio for running a new engine is usually 1:25 (40 ml of oil per 1 liter of gasoline), and for permanent use - 1:50 (20 ml of oil per 1 liter of gasoline). Excess oil in the mixture leads to the formation of a load on the candle and in the exhaust channel, which worsens traction and increases consumption. Lack of oil threatens with bullies and wedges of the engine.
For the calculation of the range of the fishing should take into account not only data-sheet figures, but also real conditions. Wind, current and loading of the boat can increase the consumption of gasoline by 20-30%. 1.2-litre tankThe ventriloque, which is often included, is more of a demonstration or emergency option. For full fishing, experienced boaters recommend purchasing a remote fuel tank of 12 liters or more.
To accurately calculate your boat's fuel consumption, use the full-to-full method: fill up the tank, ride normally, then refuel to full and divide the amount of fuel consumed by the number of hours the engine runs.
Comparison with competitors: Tohatsu, Yamaha and Hidea
The market for low-power engines is full of offers, and Kamisu 5 The main competitors in this segment are the Tohatsu M5B, Yamaha 5CMHS and cheaper Chinese counterparts like Hidea or Sea-Pro. Japanese engines win in casting, assembly accuracy and availability of original parts, but their cost can be 2-2.5 times higher.
Compared to Hidea HD5.8 With similar models, Kamisu often wins in the ergonomics of the tube and ease of launch. However, in terms of vibroacoustic comfort, Japanese leaders (Yamaha, Tohatsu) remain out of competition due to the improved balancing of the crankshaft and silencer. For those who spend 8-10 hours on the water, noise level can be a decisive factor.
Below is a comparative table of specifications that helps to make a choice:
| Characterization | Kamisu 5 (2t) | Tohatsu M5B (2t) | Yamaha 5CMHS (2t) |
|---|---|---|---|
| Power, HP. | 5.0 | 5.0 | 5.0 |
| Weight, kg | ~19.5 | ~19.0 | ~19.0 |
| Ignition system | CDI | CDI | CDI |
| Approximate price | Low. | High. | High. |
| Parts availability | Medium | High. | High. |
Maintenance and typical faults
Regular maintenance is a guarantee that boat-engine Kamisu 5 The first thing you need to do is to change the gearbox oil, and it's recommended to do it after the first 10 hours of running, and then at the end of each season or every 100 hours of motoring, and the color of the oil should be transparent, and the appearance of an emulsion (mayonnaise) indicates that water is entering the glands.
The spark plug requires a check before each season. Black colored garland indicates a rich mixture or an excess of oil, white plaque indicates a poor mixture or overheating. The normal color of the electrode is brick-brown. You also need to lubricate all friction points of the tiller control and the mechanism of turning the lower unit with a consistent lubricant resistant to washing with water.
A typical problem of budget two-tacters is the destruction of the impeller The rubber will tan or crack over time, especially if the motor has been idle for a long time without water, and checking the water jet from the control hole should become a habit: the absence of a jet means an instant risk of overheating and jamming the piston group.
☑️ Seasonal engine maintenance
Real feedback from owners and experience of operation
Analyzing the forums of water engines and reviews in specialized stores, we can highlight the general trends in estimates. Kamisu 5Users often praise the engine for being “unkillable” with proper care and being able to start easily even after winter storage. Many people note that for a PVC boat 2.8-3.2 meters long with one angler on board, this power is enough for confident plane.
But there are also complaints, and most often they concern the quality of components: the vibration of the screw due to imperfect balancing, the lump of the rod, which has to be eliminated by lifting bolts, and sometimes - the leak of the ducts of lower unit, owners advise immediately after purchase to carry out the defect: stretch all the bolt joints, check the condition of the studs and if necessary replace the regular screws with better analogues.
The experience of using two-stroke engines in winter is interesting, but conservation is still required, owners recommend that you fully develop the fuel from the carburetor before storage or use fuel stabilizers, which prevents the coking of the jelly and facilitates the start next spring.
⚠️ Warning: Never store the motor upright on the screw or on a lower unit. The water left in the cooling system may freeze and rupture the cylinder block or pump. Store strictly on the lower unit bracket or horizontally on the side (overturning at certain intervals).
FAQ: Frequently asked questions
Do I need to register the outboard motor Kamisu 5 hp in GIMS?
According to the current legislation of the Russian Federation, small vessels with outboard motors with power are subject to registration. more than 8 kilowatts Since the power of the Kamisu 5 is 5 hp (about 3.68 kW), the engine itself does not require registration, however, if the total weight of the boat and engine exceeds 200 kg, registration of the boat is still mandatory.
Which oil is best used for the mixture?
For two-stroke water-cooled outboard motors, oils with labeling must be used. TC-W3Conventional oils for chainsaws or motoblocks (JASO FC/FD) can form more sodium and burn worse in aqueous environment, resulting in candle contamination and reduced resource.
Why does the engine stop at high speeds?
The most likely cause is a clogging of the fuel jelly or a violation of the ventilation of the fuel tank (the valve clogged in the lid), and it is also worth checking the condition of the spark plug and the integrity of the fuel hoses for air sucking.
Can this motor be used in salt water?
Yes, you can, but with a clean-up of the cooling system after each operation, salt water is extremely aggressive against aluminum alloys and magnesium anodes, and it is recommended to change the sacrificial anode more often on lower unit.
The Kamisu 5 hp 2t outboard motor is the optimal budget choice for light boats, requiring careful attention to the quality of the mixture and regular lubrication of the knots.