Choosing the first outboard motor for a PVC boat is always a balance between the desire to save money and the fear of buying illiquid. kamisu It is often flashed, especially in the budget segment of 5 horsepower, which is considered the “golden mean” for compact boats, allowing you to develop planing with one passenger. However, breakdown statistics and real experience of operation often differ from marketing booklets.
Owners share opinions polarly: some praise the engine for unpretentiousness to gasoline, others complain about the quality of the assembly after the first season. Two-stroke engine The 98 cubic centimeters of data is technically consistent with the stated specifications, but the devil is in the details, and we analyzed hundreds of reports from fishing, forums and service centers to get an objective picture.
If you're considering Kamis 5 As a primary traction for cruising or fishing, you should be aware of the hidden nuances of its design. Some knots require mandatory rework immediately after purchase, otherwise there is a risk of staying on the water. In this article, we will discuss the real problems, fuel consumption and what vendors usually do not.
First impressions and build quality
The engine's appearance is often credible: neat plastic, no backlashes on new models, and a nice tactile handler, but a closer look reveals typical "diseases" in the budget segment. Fastening elements, supplied from the factory, are often made of soft metal, prone to "licking" the faces at the first attempt to tighten.
Many users note that the paint on the lower unit is uneven and the presence of burrs on aluminum castings. This does not affect the functionality, but indicates quality control on the assembly line. lower unit - in some batches there were microcracks in the area of the anti-cavitation plate.
⚠️ Warning: Before the first run, be sure to check the tightening of all bolt joints, especially the mounting of the rummel and lower unit to the lower unit leg. A factory puff is often not enough for a prolonged vibration load.
The plastic of the casing, although it looks presentable, is quite fragile in the cold. Operation at temperatures below -10 ° C requires extreme caution when removing and installing the cap. control tiller The gas has clear fixators, but the spring of the return mechanism may weaken over time, which will require adjustment.
Dynamics of acceleration and behavior on the water
On the water. Kamisu 5 With one person in a boat 2.8-3.2 meters long, the motor confidently leads the boat to plane. Speed varies from 20 to 25 km / h depending on the load and shape of the hull. However, with two adult passengers, you can forget about glides - the engine goes into displacement mode, and the speed drops to 10-12 km / h.
An important parameter is the ability to keep the speed under load. carburetorThe throttle, which is installed on most versions, tends to deplete the mixture when the throttle is opened sharply, which leads to thrust failures if you do not warm up the engine before starting active movement, owners recommend not to open the gas sharply on a cold engine.
- 🚀 The time to go out for planing with one pilot is about 30-40 seconds.
- 🌊 On the excitement, the engine is prone to choke if the fuel level in the tank is below 1/4.
- 🔊 The noise level is higher than that of modern four-stroke analogues, which is typical for two-strokes.
Maneuverability is provided by turning the lower unit, which is quite easy even without a hydraulic compensator. However, at high revs, yaw can be observed if the boat's transom is not strengthened or has an insufficient angle of kilevativity. The propeller in the drain is often made of a soft alloy, which easily bends when hitting a snag.
To improve the dynamics and protection of the screw, many owners immediately change the standard screw to a reinforced aluminum or composite analogue with a large step.
Fuel consumption and economy
The question of the appetite of the engine is of concern to every hydraulic motor, the officially declared consumption is about 1.3-1.5 liters per hour at maximum speed. two-stroke consumes up to 1.8 liters of mixture per hour, which is quite consistent with the norms for 5 hp.
In economical trolling mode (about 3000 rpm), the flow rate drops to 0.8-1.0 liters. This allows you to travel a distance of 100-120 kilometers on a full 24-liter tank. However, it is worth remembering that the engine requires preparation of the fuel mixture.
| Mode of work | Turnovers (roughly) | Mixture flow rate (L/hour) | Approximate working time on a full tank (24 l) |
|---|---|---|---|
| Idle move | 1000–1500 | 0.4 – 0.5 | 48 hours - 60 hours |
| trolling | 3000–3500 | 0.8 – 1.0 | 24-30 hours |
| Cruising speed | 4500–5000 | 1.4 – 1.6 | 15-17 hours |
| Full gas. | 5500+ | 1.7 – 1.9 | 12-14 hours |
It is critical to maintain a mixing ratio of oil to gasoline. For break-in, a ratio of 1:25 is recommended, for continuous use - 1:50. mineral-oil old sample can lead to increased nagaroformation and coking of the piston ring.
☑️ Fuel system control
Typical malfunctions and “childhood diseases”
No budget engine is without disadvantages, and Kamis 5 The statistics of service centers highlight several recurring problems, most often owners experience leakage of the crankshaft glands after 50 hours, which leads to air suction and impoverishment of the mixture.
The second most popular problem is the ignition system. Switch And the coil can overheat when it's running full, causing the spark to disappear, and when it cools, the engine starts again, but the problem comes back, and the temperature sensor often fails, which simply stops closing the circuit when it overheats.
⚠️ Attention: If the engine stops hot and doesn't start until it's cooled, it's probably the ignition module or the candle gap that's broken. Don't try to disassemble the carburetor right away.
Another common defect is to leak through the exhaust manifold gasket. The aggressive environment of exhaust gases and water quickly corrodes poor-quality paronite. Owners recommend immediately replacing the regular gasket with better-quality analogues or cutting them out of heat-resistant material.
The Hidden Problem of lower unit
What many people don't know is that you can accumulate water in lower unit because of a clogged drainage hole, which causes the gears of the gears to corrosion from the inside, and it's recommended that you check once a season for an emulsion in the gearbox oil.
Maintenance and engine life
With proper care boat-engine The reciprocating group is estimated to have a life of 300 to 500 hours before the first overhaul, the key to longevity is the quality of the fuel and oil used, and the dirty gasoline kills the carburetor and cylinder the fastest.
The maintenance regulations are simple: after each fishing, it is advisable to wash the cooling system with fresh water, especially if you walked on a salty reservoir. Ignition candle You need to check every 10 hours, clean the plaque and adjust the gap. Lubrication of the lower unit and gearbox slits is required regularly, as the regular lubricant is often washed out.
- 🛢️ Replace oil in the gearbox: every 50 hours or once a season.
- 🧹 Cleaning of the carburetor: if necessary, with unstable work.
- 🔩 Lubrication of knots: before each foray into the water.
Winter storage requires conservation, the motor must be designed or preserved with a fuel stabilizer. Kamisu 5 It is better in an upright position or on a special stand so that the water does not remain in the cooling shirt and froze, breaking the block.
The main secret of the longevity of the Chinese engine is the use of high-quality semi-synthetic oil for two-stroke engines labeled TC-W3 and regular replacement of gear glands.
Comparison with competitors: Tohatsu, Yamaha, Hidea
In the Japanese giants, like, Tohatsu M5BDS or Yamaha 5CMHSThe Japanese have been serving for decades with little or no intervention, while the Chinese require attention, but the price difference can be as large as three times the size, making the choice less obvious.
Compared to other Chinese brands, such as Hidea or Sea-Pro, Kamisu is in the middle. Hideya often boasts of more reliable carburetors, but scolds for noise. Sea-Pro boasts better corrosion protection. Kamisu takes the availability of spare parts.
For a beginner who goes out 5-10 times a year, overpaying for a Japanese brand may not make sense, but if you plan to be in intensive operation, commercial use or long trips, the reliability of a famous brand is more important than saving. Failure statistics show that Kamisu is more likely to require minor repairs in the first two years of operation than market leaders.
Should I buy a used Kamisu 5?
If the previous owner has been monitoring the mixture and has not overheated the engine, it can last a long time. However, if the engine is "ushatan", the recovery can cost 70% of the price of a new one. Be sure to check the compression (should be at least 6-7 atm) and the presence of sparks in all modes.
Which petrol is better to pour: 92 or 95?
The manufacturer recommends the AI-92. Using 95th gasoline in two-stroke engines with air cooling (as in some versions) or a simplified cooling system is not advisable. High octane number does not give advantages in power, and the mixture can burn longer, causing overheating. Better to buy a quality 92nd and good oil than a bad 95th.
Why is the engine smoking?
Plenty of white smoke is a sign of oil burning. During break-in, this is normal. If the old engine smokes, the piston rings may be worn out or the proportion of the mixture is broken (too much oil), blue or black smoke may indicate the carburetor is not properly adjusted (rich mixture).
Can I put an electric starter in?
On the base version. Kamis 5 There's no electric starter, only a handheld cable. Installing an electric starter is theoretically possible, but requires replacing the flywheel, installing the starter coil, the battery, and wiring. It's not economically feasible, because the cost of refining the engine will bring the price of the factory version with the electric starter.
Where can I find the parts?
Parts on the Kamisu are common in boating stores and marketplaces, many parts are unified with other Chinese engines (for example, some models of Hangkai or Yamabisi), the main consumables (candles, gaskets, glands) are easy to find, but body parts or specific elements of the carburetor will have to search by catalog numbers.